M. Mvondo, Harding Saah Namekong, Stéphane Minko Essono, C. F. Awounfack, D. Njamen
No Abstract.
没有抽象的。
{"title":"Effect of Entada africana Guill. er Perr. (Mimosaceae) extracts on some symptoms of estrogen deficiency in ovariectomized Wistar rats","authors":"M. Mvondo, Harding Saah Namekong, Stéphane Minko Essono, C. F. Awounfack, D. Njamen","doi":"10.4314/cajeb.v13i1.1","DOIUrl":"https://doi.org/10.4314/cajeb.v13i1.1","url":null,"abstract":"No Abstract.","PeriodicalId":9401,"journal":{"name":"Cameroon Journal of Experimental Biology","volume":"116 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2020-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87927077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gorothy Nkwendem Djouatsa, J. R. Kana, F. Meutchieye
No Abstract.
没有抽象的。
{"title":"Genetic diversity of edible smails'population ( Archachatina marginata and Achatina fulica) expoited in the coastal region of Cameroon","authors":"Gorothy Nkwendem Djouatsa, J. R. Kana, F. Meutchieye","doi":"10.4314/cajeb.v13i1.7","DOIUrl":"https://doi.org/10.4314/cajeb.v13i1.7","url":null,"abstract":"No Abstract.","PeriodicalId":9401,"journal":{"name":"Cameroon Journal of Experimental Biology","volume":"70 1","pages":"49-55"},"PeriodicalIF":0.0,"publicationDate":"2020-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91018482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Atsamo, E. Wado, E. P. Nguelefack-Mbuyo, P. Watcho, T. B. Nguelefack
Previous studies demonstrated that the leaves of Kalanchoe crenata (Crassulaceae) possess analgesic, anti-inflammatory, anticonvulsant and cardiovascular activities but nothing is known about the toxicity of this plant material. The objective of the present study was to evaluate the acute and sub-chronic toxicities of the aqueous extract of the leaves of K. crenata (AEKC) prepared as a dry leaves decoction. Acute oral toxicity of the AEKC was evaluated in mice at doses 2, 4, 6, and 8 g/kg. Animals were observed for 3 hours post administration for signs and symptoms of intoxication. Survivors were followed up for 14 days after treatment. Wistar rats of both sexes were used for sub-chronic toxicity. They were orally treated with the AEKC at doses of 300, 600 and 1200 mg/kg/day for 4 consecutive weeks. They were further euthanized and blood was collected for biochemical and hematological analyses. A single acute administration of AEKC reduced the sensitivity to pain and the mobility of animals. These behavioral modifications disappeared 3 hours after administration. Only the dose of 8 g/kg caused the death of one female mouse out of 6, inferring a LD50 greater than 8 g/kg. The daily administration of AEKC did not induce mortality, behavioral modifications, significant variations of body weight, relative weights of the liver and kidney and plasma content of Alanine amino transferase (ALAT) and aspartate amino transferase (ASAT). Besides, no significant difference was observed on glomerular filtration rate and other parameters of renal excretion. Meanwhile, at the dose of 300 mg/kg/day, a significant increase in total bilirubin, free bilirubin and a significant decrease in conjugated bilirubin and plasma creatinine were registered. These results suggest that the aqueous extract of the leaves of K. crenata can be classified as a non-toxic substance. However, attention should be paid on the hepatic function.Keywords: Acute and sub-chronic toxicity, aqueous extract, Kalanchoe crenata, Crassulaceae
{"title":"Acute and sub-chronic oral toxicity assessment of the leaf aqueous extract of Kalanchoe crenata (Crassulaceae)","authors":"A. Atsamo, E. Wado, E. P. Nguelefack-Mbuyo, P. Watcho, T. B. Nguelefack","doi":"10.4314/cajeb.v12i1.5","DOIUrl":"https://doi.org/10.4314/cajeb.v12i1.5","url":null,"abstract":"Previous studies demonstrated that the leaves of Kalanchoe crenata (Crassulaceae) possess analgesic, anti-inflammatory, anticonvulsant and cardiovascular activities but nothing is known about the toxicity of this plant material. The objective of the present study was to evaluate the acute and sub-chronic toxicities of the aqueous extract of the leaves of K. crenata (AEKC) prepared as a dry leaves decoction. Acute oral toxicity of the AEKC was evaluated in mice at doses 2, 4, 6, and 8 g/kg. Animals were observed for 3 hours post administration for signs and symptoms of intoxication. Survivors were followed up for 14 days after treatment. Wistar rats of both sexes were used for sub-chronic toxicity. They were orally treated with the AEKC at doses of 300, 600 and 1200 mg/kg/day for 4 consecutive weeks. They were further euthanized and blood was collected for biochemical and hematological analyses. A single acute administration of AEKC reduced the sensitivity to pain and the mobility of animals. These behavioral modifications disappeared 3 hours after administration. Only the dose of 8 g/kg caused the death of one female mouse out of 6, inferring a LD50 greater than 8 g/kg. The daily administration of AEKC did not induce mortality, behavioral modifications, significant variations of body weight, relative weights of the liver and kidney and plasma content of Alanine amino transferase (ALAT) and aspartate amino transferase (ASAT). Besides, no significant difference was observed on glomerular filtration rate and other parameters of renal excretion. Meanwhile, at the dose of 300 mg/kg/day, a significant increase in total bilirubin, free bilirubin and a significant decrease in conjugated bilirubin and plasma creatinine were registered. These results suggest that the aqueous extract of the leaves of K. crenata can be classified as a non-toxic substance. However, attention should be paid on the hepatic function.Keywords: Acute and sub-chronic toxicity, aqueous extract, Kalanchoe crenata, Crassulaceae","PeriodicalId":9401,"journal":{"name":"Cameroon Journal of Experimental Biology","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75440684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Christian Wekere, Bernice Mireille Kingha Tekombo, Delphine Dongock Nguemo, Jackson Djakbe Dapsia, Esaie Faïbawa, F-N Tchuenguem Fohouo
A Dang (Ngaoundere, Cameroun), d’avril a decembre 2015 et 2016, les fleurs de Ageratum conyzoides L., Sida rhombifolia L. et Stylosanthes guianensis (Aublet) Swartz ont ete observees en vue de l’etude de l’activite de butinage de Apis mellifera L. Les fleurs de chacune de ces especes vegetales ont ete prospectees deux jours par semaine, les mercredis et vendredis, entre 7h 00 et 18h 00, periode subdivisee en trois tranches horaires (7h 00-11h 00, 11h 00-15h 00 et 15h 00- 18h 00). Les resultats montrent que les butineuses de A. mellifera frequentaient intensement et regulierement chacune de ces especes vegetales pour la recolte du pollen. Cette abeille prelevait fortement le nectar chez S. rhombifolia et S. guianensis . Chez A. conyzoides cette activite etait faible. Le plus grand nombre de butineuses de A. mellifera simultanement en activite sur 1000 fleurs variait de 54 ( A. conyzoides ) a 125 ( S. rhombifolia ). Ageratum conyzoides , S. rhombifolia et S. guianensis sont des plantes apicoles fortement polliniferes pouvant etre cultivees et protegees pour augmenter la production du pollen comme produit de la ruche. Sida rhombifolia et S. guianensis sont des plantes apicoles fortement nectariferes pouvant etre cultivees et protegees pour accroitre la production du miel. Sur chacune de ces plantes, les ouvrieres de A. mellifera transportaient le pollen de fleur en fleur et peuvent ainsi etre considerees comme des pollinisateurs. Mots cles: Ageratum conyzoides , Sida rhombifolia , Stylosanthes guianensis , Apis mellifera , plante apicole, pollinisation English Abstract At Dang, from April to December 2015 and 2016, Apis mellifera L. workers foraging activity was studied on the flowers of three plants species, Ageratum conyzoides L., Sida rhombifolia L. and Stylosanthes guianensis (Aublet) Swartz. At Dang, the flowers of each plants species were observed two days per week, the Wednesdays and Fridays between 07h.00 and 18h.00, for recording the pollen and/or nectar foraging behaviour of A. mellifera workers. Results show that, A. mellifera harvested intensely and regularly the pollen of each plant species. In addition, S. rhombifolia and S. guianensis were also visited intensely and regularly for nectar; A. conyzoides was also visited for nectar but slightly. The greatest mean number of workers foraging simultaneously on the flower was 1 for each plant species, per 1000 varied from 54 (A. conyzoides) to 125 ( S. rhombifolia ). Apis mellifera workers visited the flowers of plants species others during foraging bouts. Consequently, A. conyzoides , S. rhombifolia and S. guianensis are highly polliniferous bee plants that can cultivated and protected to increase pollen production as a hive product. Sida rhombifolia and S. guianensis are highly nectariferous bee plants that can be cultivated and protected to increase the honey production. During foraging, A. mellifera workers carried pollen from flower to flower and improved pollination possibilities of ea
A 4 Dang Ngaoundere(喀麦隆)、2015和2016年12月,花朵Ageratum conyzoides rhombifolia·L。L、艾滋病和Stylosanthes guianensis (Aublet Swartz)被研究的玉米,以L Apis mellifera觅食活动进行了每种植物群落的花朵prospectees每周一、周三和周五两天,早上7点和18点00 00之间,1985 - 1991年subdivisee三个时段(7h 00-11h 11小时,00-15h和15点00 00 00 00 - 18点)。结果表明，mellifera的觅食者经常频繁地采集这些植物的花粉。这种蜜蜂在菱形花和桂花中大量采集花蜜。在conyzoides中，这种活性较低。在1000朵花中同时活跃的蜜蜂数量从54只(a . conyzoides)到125只(S. rhombifolia)不等。conyzoides、S. rhombifolia和S. guianensis是授粉能力强的蜜蜂植物，可以种植和保护，以增加蜂箱产品的花粉产量。菱形叶和桂花是高蜜量的养蜂植物，可以种植和保护，以增加蜂蜜产量。在每一种植物上，蜜蜂都将花粉从一朵花运送到另一朵花，因此可以被认为是传粉者。关键字:Ageratum conyzoides、艾滋病rhombifolia Stylosanthes guianensis Apis mellifera、蜜蜂授粉、植株At English文摘Dang, Apis mellifera from“April December 2015和2016年L was studied on the flowers of workers foraging活动出现三薯品种,Ageratum conyzoides L。L . and Stylosanthes rhombifolia、艾滋病(guianensis Aublet) Swartz)。Dang, At the flowers chacun薯品种长平观察two days per week, the Wednesdays and Fridays between 07h。00和18小时。= =地理= =根据美国人口普查，这个县的面积为。= =地理= =根据美国人口普查，这个县的面积为，其中土地面积为。此外，S. rhombifolia和S. guianensis也经常被大量访问以获取花蜜;= =地理= =根据美国人口普查，该镇的总面积为，其中土地和(0.964平方公里)水。同时在花上工作的工人的平均数量为每1000个，从54个(A. conyzoides)到125个(S. rhombifolia)不等。= =地理= =根据美国人口普查，这个县的土地面积为。因此，conyzoides、S. rhombifolia和S. guianensis是高度授粉的蜜蜂植物，可以栽培和保护，以增加蜂巢产品的花粉产量。艾滋病rhombifolia and are guianensis阁下的堡垒nectariferous bee种苗that can be cultivated and保护区to increase the honey生产。= =地理= =根据美国人口普查，这个县的面积为，其中土地面积为，其中土地面积为。关键词:conyzoides Ageratum, Sida菱形叶，柱花草，意大利蜜蜂，蜜蜂植物，授粉
{"title":"Exploitation des fleurs de Ageratum conyzoides, Sida rhombifolia et Stylosanthes guianensis par Apis mellifera (Hymenoptera: Apidae) à Dang (Ngaoundéré, Cameroun)","authors":"Christian Wekere, Bernice Mireille Kingha Tekombo, Delphine Dongock Nguemo, Jackson Djakbe Dapsia, Esaie Faïbawa, F-N Tchuenguem Fohouo","doi":"10.4314/cajeb.v12i1.2","DOIUrl":"https://doi.org/10.4314/cajeb.v12i1.2","url":null,"abstract":"A Dang (Ngaoundere, Cameroun), d’avril a decembre 2015 et 2016, les fleurs de Ageratum conyzoides L., Sida rhombifolia L. et Stylosanthes guianensis (Aublet) Swartz ont ete observees en vue de l’etude de l’activite de butinage de Apis mellifera L. Les fleurs de chacune de ces especes vegetales ont ete prospectees deux jours par semaine, les mercredis et vendredis, entre 7h 00 et 18h 00, periode subdivisee en trois tranches horaires (7h 00-11h 00, 11h 00-15h 00 et 15h 00- 18h 00). Les resultats montrent que les butineuses de A. mellifera frequentaient intensement et regulierement chacune de ces especes vegetales pour la recolte du pollen. Cette abeille prelevait fortement le nectar chez S. rhombifolia et S. guianensis . Chez A. conyzoides cette activite etait faible. Le plus grand nombre de butineuses de A. mellifera simultanement en activite sur 1000 fleurs variait de 54 ( A. conyzoides ) a 125 ( S. rhombifolia ). Ageratum conyzoides , S. rhombifolia et S. guianensis sont des plantes apicoles fortement polliniferes pouvant etre cultivees et protegees pour augmenter la production du pollen comme produit de la ruche. Sida rhombifolia et S. guianensis sont des plantes apicoles fortement nectariferes pouvant etre cultivees et protegees pour accroitre la production du miel. Sur chacune de ces plantes, les ouvrieres de A. mellifera transportaient le pollen de fleur en fleur et peuvent ainsi etre considerees comme des pollinisateurs. Mots cles: Ageratum conyzoides , Sida rhombifolia , Stylosanthes guianensis , Apis mellifera , plante apicole, pollinisation English Abstract At Dang, from April to December 2015 and 2016, Apis mellifera L. workers foraging activity was studied on the flowers of three plants species, Ageratum conyzoides L., Sida rhombifolia L. and Stylosanthes guianensis (Aublet) Swartz. At Dang, the flowers of each plants species were observed two days per week, the Wednesdays and Fridays between 07h.00 and 18h.00, for recording the pollen and/or nectar foraging behaviour of A. mellifera workers. Results show that, A. mellifera harvested intensely and regularly the pollen of each plant species. In addition, S. rhombifolia and S. guianensis were also visited intensely and regularly for nectar; A. conyzoides was also visited for nectar but slightly. The greatest mean number of workers foraging simultaneously on the flower was 1 for each plant species, per 1000 varied from 54 (A. conyzoides) to 125 ( S. rhombifolia ). Apis mellifera workers visited the flowers of plants species others during foraging bouts. Consequently, A. conyzoides , S. rhombifolia and S. guianensis are highly polliniferous bee plants that can cultivated and protected to increase pollen production as a hive product. Sida rhombifolia and S. guianensis are highly nectariferous bee plants that can be cultivated and protected to increase the honey production. During foraging, A. mellifera workers carried pollen from flower to flower and improved pollination possibilities of ea","PeriodicalId":9401,"journal":{"name":"Cameroon Journal of Experimental Biology","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78795333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
F-N Tchuenguem Fohouo, Jackson Djakbe Dapsia, A. Ngakou, Christian Wekere, Stéphane Louabe, Esaie Faïbawa
Les fleurs de Ceratotheca sesamoides ont ete observees en vue d’evaluer l’impact de l’activite de Apis mellifera sur la production fruitiere et grainiere a Ngaoundere dans un champ experimental a Dang dans la region de l’Adamaoua au Cameroun. Chaque annee, 540 boutons floraux ont ete etiquetes sur 120 plantes pour constituer quatre traitements : 120 fleurs laissees en libre pollinisation, 120 fleurs protegees des insectes, 200 fleurs protegees, puis visitees exclusivement par A. mellifera et 100 fleurs protegees puis destinees a l’ouverture et a la fermeture sans visite d’insecte ou de tout autre organisme. Le comportement de butinage des ouvrieres sur les fleurs, leur efficacite pollinisatrice, le taux de fructification, le nombre moyen de graines par gousse et le pourcentage de graines normales ont ete evalues. Sur 22 especes d’insectes recensees, A. mellifera vient en premiere position avec 42,02% de 853 visites. Les butineuses recoltent fortement le nectar et le pollen. Le plus grand nombre moyen d’ouvrieres simultanement en activite sur 1000 fleurs est de 276. Le taux de fructification, le nombre moyen de graines par gousse et le pourcentage de graines normales ont ete significativement plus eleves dans les traitements aux fleurs en libre pollinisation que dans ceux aux fleurs protegees. Par le biais de son efficacite pollinisatrice, Apis mellifera a augmente le taux de fructification de 24,59%, le nombre de graines par gousse de 11,63% et le pourcentage de graines normales de 3,93%. L’installation des colonies de A. mellifera a proximite des plantations de C. sesamoides est recommandee pour accroitre la production fruitiere et grainiere et maintenir les populations d’abeilles.Mots cles: Apis mellifera, Ceratotheca sesamoides, pollinisation, rendement, DangEnglish AbstractTo evaluate the impact of Apis mellifera on pod and seed yields of Ceratotheca sesamoides, foraging and pollinating activities of this insect were studied at Dang. From August to September 2015 and 2016, a total of 540 flowers buds were labeled from 120 plants to set up four treatments that include: 120 unlimited floral access by all visitors, 120 bagged flowers to avoid all visits, 200 visits limited to A. mellifera, and 100 flowers to be opened and closed without insect or any other organism visits. The foraging behavior of workers on flowers, their pollination efficiency, the fructification rate, the mean number of seeds per pod and the percentage of normal seeds were evaluated. Results indicate that, among 22 insect species recorded on C. sesamoides flowers, A. mellifera was the most represented with 42.02% of 853 visits. This honey bee intensely harvested nectar and pollen. The greatest mean number of workers foraging simultaneously on 1000 flowers was 276. The fructification rate, the mean number of seeds per pod and the percentage of normal seeds of treatments with unprotected flowers were significantly higher than those of treatments with flowers protected from inse
在喀麦隆阿达马瓦地区Dang的一个试验田中，观察了芝麻角豆花，以评估意大利蜜蜂活动对Ngaoundere水果和谷物生产的影响。每年540,花蕾etiquetes 120上为植物构成了四个治疗:120年的鲜花免费120 protegees花卉昆虫授粉,200 protegees鲜花,然后完全由a·mellifera visitees食用的鲜花和100 protegees然后开启和关闭不了参观昆虫或任何其他机构。研究了工蜂在花上的觅食行为、授粉效率、结果率、每荚平均种子数和正常种子百分比。在22种昆虫中，意大利蜜蜂以853次访问的42.02%排名第一。觅食者大量采集花蜜和花粉。每1000朵花中同时活跃的工人平均人数为276人。自由授粉处理的结果率、每荚平均种子数和正常种子百分比明显高于保护花处理的结果率。意大利蜜蜂a通过其传粉能力，果实率提高了24.59%，每荚种子数提高了11.63%，正常种子率提高了3.93%。建议在芝麻豆种植园附近安装mellifera蜂群，以增加水果和谷物产量，并维持蜜蜂数量。关键词:意大利蜜蜂，芝麻角豆，授粉，产量，DangEnglish摘要评价意大利蜜蜂对芝麻角豆豆荚和种子产量的影响，以及该昆虫的摄食和授粉活动。从August 2015与2016年9月,已合计540 flowers of buds were labeled与炉to set up that From 120幼苗上包括:120 unlimited花香access by all访客,120 bagged flowers代理之间all visit 100、200 visit limited to a . mellifera and flowers to be门洞and without any other黄金insect)走出网络visit。对工蜂对花的觅食行为、授粉效率、结果率、每荚平均种子数和正常种子的百分比进行了评价。结果表明，在C. sesamoides flowers记录的22种昆虫中，A. mellifera最具代表性，853次访问中有42.02%。这是蜜蜂密集收获的花蜜和花粉。= =地理= =根据美国人口普查局的数据，该县总面积为，其中土地和(1.0%)水。= =地理= =根据美国人口普查，该地区的总面积为，其中土地和(0.8%)水。通过其授粉效率，蜜环草的果率、种子/荚果数和正常种子数分别提高24.59%、11.63%和3.93%。a .定居点mellifera close to c的工厂》sesamoides fields推荐他的战斗to increase seed and fruit productions, and honey bee爱人民。主要作品:意大利蜜蜂，芝麻角豆，授粉，产量，Dang
{"title":"Impact de l’activité de butinage de Apis mellifera Linné (Hymenoptera: Apidae) sur la pollinisation et les rendements de Ceratotheca sesamoides Endl. (Pedaliaceae) à Dang (Ngaoundéré, Cameroun)","authors":"F-N Tchuenguem Fohouo, Jackson Djakbe Dapsia, A. Ngakou, Christian Wekere, Stéphane Louabe, Esaie Faïbawa","doi":"10.4314/cajeb.v12i1.3","DOIUrl":"https://doi.org/10.4314/cajeb.v12i1.3","url":null,"abstract":"Les fleurs de Ceratotheca sesamoides ont ete observees en vue d’evaluer l’impact de l’activite de Apis mellifera sur la production fruitiere et grainiere a Ngaoundere dans un champ experimental a Dang dans la region de l’Adamaoua au Cameroun. Chaque annee, 540 boutons floraux ont ete etiquetes sur 120 plantes pour constituer quatre traitements : 120 fleurs laissees en libre pollinisation, 120 fleurs protegees des insectes, 200 fleurs protegees, puis visitees exclusivement par A. mellifera et 100 fleurs protegees puis destinees a l’ouverture et a la fermeture sans visite d’insecte ou de tout autre organisme. Le comportement de butinage des ouvrieres sur les fleurs, leur efficacite pollinisatrice, le taux de fructification, le nombre moyen de graines par gousse et le pourcentage de graines normales ont ete evalues. Sur 22 especes d’insectes recensees, A. mellifera vient en premiere position avec 42,02% de 853 visites. Les butineuses recoltent fortement le nectar et le pollen. Le plus grand nombre moyen d’ouvrieres simultanement en activite sur 1000 fleurs est de 276. Le taux de fructification, le nombre moyen de graines par gousse et le pourcentage de graines normales ont ete significativement plus eleves dans les traitements aux fleurs en libre pollinisation que dans ceux aux fleurs protegees. Par le biais de son efficacite pollinisatrice, Apis mellifera a augmente le taux de fructification de 24,59%, le nombre de graines par gousse de 11,63% et le pourcentage de graines normales de 3,93%. L’installation des colonies de A. mellifera a proximite des plantations de C. sesamoides est recommandee pour accroitre la production fruitiere et grainiere et maintenir les populations d’abeilles.Mots cles: Apis mellifera, Ceratotheca sesamoides, pollinisation, rendement, DangEnglish AbstractTo evaluate the impact of Apis mellifera on pod and seed yields of Ceratotheca sesamoides, foraging and pollinating activities of this insect were studied at Dang. From August to September 2015 and 2016, a total of 540 flowers buds were labeled from 120 plants to set up four treatments that include: 120 unlimited floral access by all visitors, 120 bagged flowers to avoid all visits, 200 visits limited to A. mellifera, and 100 flowers to be opened and closed without insect or any other organism visits. The foraging behavior of workers on flowers, their pollination efficiency, the fructification rate, the mean number of seeds per pod and the percentage of normal seeds were evaluated. Results indicate that, among 22 insect species recorded on C. sesamoides flowers, A. mellifera was the most represented with 42.02% of 853 visits. This honey bee intensely harvested nectar and pollen. The greatest mean number of workers foraging simultaneously on 1000 flowers was 276. The fructification rate, the mean number of seeds per pod and the percentage of normal seeds of treatments with unprotected flowers were significantly higher than those of treatments with flowers protected from inse","PeriodicalId":9401,"journal":{"name":"Cameroon Journal of Experimental Biology","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82748517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gabriel Nicodème Tsetagho, T. Fonkou, V. Nguetsop, Martin Lekeufack
L’objectif de cette etude a ete d’evaluer les possibilites de valorisation de la forte biomasse d’ Echinochloa crus-pavonis produite en epuration des eaux usees domestiques. La composition chimique de cette plante a ete estimee. Des echantillons destines aux analyses ont ete preleves sur des specimens mis en culture dans des bassins d’epuration a chaque stade phenologique (feuillu, montaison, floraison). Le pourcentage de la Matiere Seche (MS) et des cendres ainsi que le pourcentage par matiere seche de la Matiere Organique (MO), la Digestibilite de la Matiere Organique (DMO), l’Energie Metabolisable (EM), les teneurs en lipides et en fibres (NDF, ADF, ADL, hemicellulose et cellulose) ont ete determines dans les echantillons par les methodes decrites par AOAC (Association of Official Agricultural Chemists). La teneur en proteines a ete determinee par la methode Kjeldhal. La composition chimique d’ E. crus-pavonis varie significativement avec le stade phenologique. La MS, MO, NDF et ADF ont significativement augmente entre les differents stades phenologiques (P 0,05) (respectivement de 10,37 %, 17,16 % et 4,92 % au stade feuillu a 5.90 %, 14,09 % et 3,43 % MS au stade floraison). Ces resultats obtenus indiquent qu’ E. cruspavonis utilisee dans le traitement des eaux usees presente des potentialites fourrageres et pourrait donc etre utilise pour la nutrition du betail, si d’autres tests sanitaires sont menes. Mots cles: Eaux usees, E. crus-pavonis , stades phenologiques, biomasse, composition chimique English Abstract The objective of this study was to evaluate the possibilities of valorization of the high Echinochloa crus-pavonis biomass produced in an experimental wastewater treatment plant. The chemical composition of this plant was estimated. Samples for analyses were collected from specimens planted in the wetland beds at each phenological stages (leafy, bolting and the flowering stages). The percentage of dry matter (DM) and ash as well as the percentage of dry organic matter (OM), organic matter digestibility (OMD), Metabolizable energy (ME), lipid and fibre contents (NDF, ADF, ADL, hemicellulose and cellulose) were determined in samples by the methods described by AOAC (Agricultural Official Analysis Chemists Association). Protein content was determined by Kjeldhal method. The chemical composition of E. Crus-Pavonis varies significantly with the phenological stages. DM, OM, NDF and ADF significantly increased between the phenological stages (P 0.05) (respectively 10.37% DM, 17.16% DM and 4.92% DM at leafy stage to 5.90% DM, 14.09% DM and 3.43% DM at flowering stage). These results indicate that E. crus-pavonis used in wastewater treatment has forage potential and could therefore be used for livestock nutrition if tested healthy. Keywords: Wastewater, E. crus-pavonis , phenological stages, biomass, chemical composition
{"title":"Potentiel fourrager d’Echinochloa crus-pavonis (Kunth) Schult utilisée en phytoépuration des eaux usées domestiques","authors":"Gabriel Nicodème Tsetagho, T. Fonkou, V. Nguetsop, Martin Lekeufack","doi":"10.4314/cajeb.v12i1.7","DOIUrl":"https://doi.org/10.4314/cajeb.v12i1.7","url":null,"abstract":"L’objectif de cette etude a ete d’evaluer les possibilites de valorisation de la forte biomasse d’ Echinochloa crus-pavonis produite en epuration des eaux usees domestiques. La composition chimique de cette plante a ete estimee. Des echantillons destines aux analyses ont ete preleves sur des specimens mis en culture dans des bassins d’epuration a chaque stade phenologique (feuillu, montaison, floraison). Le pourcentage de la Matiere Seche (MS) et des cendres ainsi que le pourcentage par matiere seche de la Matiere Organique (MO), la Digestibilite de la Matiere Organique (DMO), l’Energie Metabolisable (EM), les teneurs en lipides et en fibres (NDF, ADF, ADL, hemicellulose et cellulose) ont ete determines dans les echantillons par les methodes decrites par AOAC (Association of Official Agricultural Chemists). La teneur en proteines a ete determinee par la methode Kjeldhal. La composition chimique d’ E. crus-pavonis varie significativement avec le stade phenologique. La MS, MO, NDF et ADF ont significativement augmente entre les differents stades phenologiques (P 0,05) (respectivement de 10,37 %, 17,16 % et 4,92 % au stade feuillu a 5.90 %, 14,09 % et 3,43 % MS au stade floraison). Ces resultats obtenus indiquent qu’ E. cruspavonis utilisee dans le traitement des eaux usees presente des potentialites fourrageres et pourrait donc etre utilise pour la nutrition du betail, si d’autres tests sanitaires sont menes. Mots cles: Eaux usees, E. crus-pavonis , stades phenologiques, biomasse, composition chimique English Abstract The objective of this study was to evaluate the possibilities of valorization of the high Echinochloa crus-pavonis biomass produced in an experimental wastewater treatment plant. The chemical composition of this plant was estimated. Samples for analyses were collected from specimens planted in the wetland beds at each phenological stages (leafy, bolting and the flowering stages). The percentage of dry matter (DM) and ash as well as the percentage of dry organic matter (OM), organic matter digestibility (OMD), Metabolizable energy (ME), lipid and fibre contents (NDF, ADF, ADL, hemicellulose and cellulose) were determined in samples by the methods described by AOAC (Agricultural Official Analysis Chemists Association). Protein content was determined by Kjeldhal method. The chemical composition of E. Crus-Pavonis varies significantly with the phenological stages. DM, OM, NDF and ADF significantly increased between the phenological stages (P 0.05) (respectively 10.37% DM, 17.16% DM and 4.92% DM at leafy stage to 5.90% DM, 14.09% DM and 3.43% DM at flowering stage). These results indicate that E. crus-pavonis used in wastewater treatment has forage potential and could therefore be used for livestock nutrition if tested healthy. Keywords: Wastewater, E. crus-pavonis , phenological stages, biomass, chemical composition","PeriodicalId":9401,"journal":{"name":"Cameroon Journal of Experimental Biology","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84144518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Basile Tindano, B. Bayala, S. Guenné, Maya Doukoure, M. Kiendrebeogo, G. R. Belemtougri
Pentadesma butyracea is a tall tree of Western Africa commonly called better tree. Leaves are used in the treatment of several diseases including genitourinary, pregnancy and metabolic disorders. The aim of this study was to assess toxicity and antioxidant activity of hydroethanolic extract of P. butyracea leaves. The major compounds of the extract were previously identified. Oral acute toxicity was achieved on NMRI mice during 72 h after single oral-administration whereas oral sub-acute toxicity was achieved on Wistar rats during 28-days. Antioxidant activity was assessed through DPPH, FRAP and lipid peroxidation inhibition. The major phytochemicals identified in the hydroethanolic extract of P. butyracea leaves were tannins, steroids and triterpenoids, anthocyanosids, anthraquinones, saponosids, mucilage and gums. The acute toxicity study showed that the extract did not cause neither sign of toxicity nor mortality until 3000 mg/kg. The subacute toxicity study showed that the extract did not cause signs of toxicity after 28-days consecutive oral administration. Nevertheless, platelets count. total cholesterol and AST level were significantly (p<0.05) reduced. Assessment of antioxidant activity revealed that the extract possessed a great potential of scavenging free radical, to inhibit lipid peroxidation and to reduce ferric power. The extract could have hepaprotective activity and may be benefit for cholesterol reduction.Keywords: Pentadesma butyraceae, toxicity, phytochemistry, antioxidant
{"title":"Innocuity and antioxidant activities of Pentadesma butyracea (1824) leaves for its use in hormone replacement therapy","authors":"Basile Tindano, B. Bayala, S. Guenné, Maya Doukoure, M. Kiendrebeogo, G. R. Belemtougri","doi":"10.4314/cajeb.v12i1.4","DOIUrl":"https://doi.org/10.4314/cajeb.v12i1.4","url":null,"abstract":"Pentadesma butyracea is a tall tree of Western Africa commonly called better tree. Leaves are used in the treatment of several diseases including genitourinary, pregnancy and metabolic disorders. The aim of this study was to assess toxicity and antioxidant activity of hydroethanolic extract of P. butyracea leaves. The major compounds of the extract were previously identified. Oral acute toxicity was achieved on NMRI mice during 72 h after single oral-administration whereas oral sub-acute toxicity was achieved on Wistar rats during 28-days. Antioxidant activity was assessed through DPPH, FRAP and lipid peroxidation inhibition. The major phytochemicals identified in the hydroethanolic extract of P. butyracea leaves were tannins, steroids and triterpenoids, anthocyanosids, anthraquinones, saponosids, mucilage and gums. The acute toxicity study showed that the extract did not cause neither sign of toxicity nor mortality until 3000 mg/kg. The subacute toxicity study showed that the extract did not cause signs of toxicity after 28-days consecutive oral administration. Nevertheless, platelets count. total cholesterol and AST level were significantly (p<0.05) reduced. Assessment of antioxidant activity revealed that the extract possessed a great potential of scavenging free radical, to inhibit lipid peroxidation and to reduce ferric power. The extract could have hepaprotective activity and may be benefit for cholesterol reduction.Keywords: Pentadesma butyraceae, toxicity, phytochemistry, antioxidant","PeriodicalId":9401,"journal":{"name":"Cameroon Journal of Experimental Biology","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80872844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Junior Baudoin Wouokoue Taffo, T. Fonkou, V. Nguetsop
The development of tree allometric equations is crucial to accurate savannah carbon assessment. In Africa, the absence of multi-species allometric equations for savannah ecosystems has led to broad use of pan moist tropical equations develop for forest to estimate tree biomass. The aim of this study was to develop accurate multi-species allometric regressions for estimation the aboveground biomass of trees in the Western Highlands savannahs of Cameroon. Data of aboveground woody biomass were obtained from destructive sampling of 103 trees belonging to 7 species across a range of diameter (5–38 cm). The dry aboveground biomass varied from 6.19 kg for the smallest tree to 669.45 kg for the largest tree. Proportional relationships between aboveground biomass and diameter breast height (DBH) are constructed derived from eight regression models (linear, growth, compound, exponential, quadratic, cubic, power and logarithmic). The best models were selected using coefficients of determination (R²) and relative error. The best local multi-species models using only diameter as input variable were quadratic and cubic regressions with respectively R² of 0.914 and 0.917. The quadratic model overestimates the biomass with a bias of 0.04 % while the cubic model underestimates it with a 0.012 % bias. In this study, the two multi-species allometric equation developed for savannahs can be used to produce accurate estimates of biomass and carbon stocks from diameter measurement in forest inventory data.Keywords: Aboveground biomass, Allometric equations, DBH, Highlands, savannahs
{"title":"Allometric models to estimate the aboveground biomass of tropical highlands savannahs trees","authors":"Junior Baudoin Wouokoue Taffo, T. Fonkou, V. Nguetsop","doi":"10.4314/cajeb.v12i1.6","DOIUrl":"https://doi.org/10.4314/cajeb.v12i1.6","url":null,"abstract":"The development of tree allometric equations is crucial to accurate savannah carbon assessment. In Africa, the absence of multi-species allometric equations for savannah ecosystems has led to broad use of pan moist tropical equations develop for forest to estimate tree biomass. The aim of this study was to develop accurate multi-species allometric regressions for estimation the aboveground biomass of trees in the Western Highlands savannahs of Cameroon. Data of aboveground woody biomass were obtained from destructive sampling of 103 trees belonging to 7 species across a range of diameter (5–38 cm). The dry aboveground biomass varied from 6.19 kg for the smallest tree to 669.45 kg for the largest tree. Proportional relationships between aboveground biomass and diameter breast height (DBH) are constructed derived from eight regression models (linear, growth, compound, exponential, quadratic, cubic, power and logarithmic). The best models were selected using coefficients of determination (R²) and relative error. The best local multi-species models using only diameter as input variable were quadratic and cubic regressions with respectively R² of 0.914 and 0.917. The quadratic model overestimates the biomass with a bias of 0.04 % while the cubic model underestimates it with a 0.012 % bias. In this study, the two multi-species allometric equation developed for savannahs can be used to produce accurate estimates of biomass and carbon stocks from diameter measurement in forest inventory data.Keywords: Aboveground biomass, Allometric equations, DBH, Highlands, savannahs","PeriodicalId":9401,"journal":{"name":"Cameroon Journal of Experimental Biology","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90384019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Meliphe Francis Kom, V. Nguetsop, L. Bremond, T. Fonkou, Bernadette Noumsi, D. Sebag, R. Oslisly, M. Tsalefac
Cet article presente les resultats d’analyses de la variation des assemblages de diatomees le long de la carotte prelevee dans le marais Paurosa (0°12’47,4’’S; 11°35’19,3’’ E) qui se trouve dans une mosaique foret-savane au Nord du Parc National de la Lope au Gabon. Les donnees obtenues ont permis de reconstruire l’histoire paleohydrologique de ce marais depuis 2000 ans. La microflore des diatomees bien diversifiee montre d’importants changements pendant cette tranche de temps. A la base de la carotte (2000-1700 ans cal. BP), la dominance des assemblages a Pinnularia viridiformis, benthiques, indique une phase de bas niveau palustre avec probablement des eaux claires. L’episode qui s’ensuit entre 1700-700 ans cal BP montre une evolution vers des conditions plus humides marquees par l’abondance de diatomees tychoplanctoniques acidophiles et oligotrophes. Entre 700 et 500 ans BP, les assemblages de diatomees montrent une baisse du niveau d’eau marquee par l’abondance de benthiques oligotrophes alcaliphiles. L’episode 4 (500-200 ans cal BP) est comparable a l’episode 2 et indique aussi des conditions plus humides. Les conditions actuelles se mettent en place sur les 200 dernieres annees, avec un developpement de diatomees benthiques et epiphytes, typiques des mares inondees durant la saison des pluies. Les variations d’humidite de ce marais au cours de ces deux millenaires peuvent s’expliquer par des modifications de la saisonnalite et des quantites de precipitations regionales mais aussi par les conditions hydrologiques locales.Mots cles: Gabon, Marais, Savane, Diatomees, Habitat, Trophie, PaleohydrologieEnglish AbstractThis paper presents the results of the analysis of changes in diatoms assemblages along the core derived from the Paurosa Marsh (0° 12'47.4 ' 'S; 11 35'19.3 ' 'E), which is located in a forest-savanna mosaic at the northern of Lope National Park, Gabon. The data obtained led to the reconstruction of the paleaeohydrological history of this marsh for the past 2000 years. The well-diversified diatom microflora shows significant changes during this period. At the base of the core (2000-1700 cal yr BP), the predominance of benthic diatoms dominated by Pinnularia viridiformis indicates a phase of low water level with probably a clear water column. The episode that follows between 1700-700 cal yr BP shows an evolution towards wetter conditions marked by high abundances of acidophilous tychoplanktonic and oligotrophic species. Between 700 and 500 cal yr BP, the diatoms assemblages show a decrease of water level marked by high abundances of benthic alcaliphilous and oligotrophic species. Episode 4 (500 to 200 cal yr BP) is comparable to episode 2, thus indicates more humid conditions than before. The modern conditions were established since the last 200 years, with the development of benthic and epiphytic diatoms, typical of ponds flooded during the rainy season. The humidity variations of this marsh during these two millennia can be explain
{"title":"Evolution paléohydrologique du marais Paurosa au centre du Gabon au cours des deux derniers millénaires : Contribution des diatomées","authors":"Meliphe Francis Kom, V. Nguetsop, L. Bremond, T. Fonkou, Bernadette Noumsi, D. Sebag, R. Oslisly, M. Tsalefac","doi":"10.4314/cajeb.v12i1.8","DOIUrl":"https://doi.org/10.4314/cajeb.v12i1.8","url":null,"abstract":"Cet article presente les resultats d’analyses de la variation des assemblages de diatomees le long de la carotte prelevee dans le marais Paurosa (0°12’47,4’’S; 11°35’19,3’’ E) qui se trouve dans une mosaique foret-savane au Nord du Parc National de la Lope au Gabon. Les donnees obtenues ont permis de reconstruire l’histoire paleohydrologique de ce marais depuis 2000 ans. La microflore des diatomees bien diversifiee montre d’importants changements pendant cette tranche de temps. A la base de la carotte (2000-1700 ans cal. BP), la dominance des assemblages a Pinnularia viridiformis, benthiques, indique une phase de bas niveau palustre avec probablement des eaux claires. L’episode qui s’ensuit entre 1700-700 ans cal BP montre une evolution vers des conditions plus humides marquees par l’abondance de diatomees tychoplanctoniques acidophiles et oligotrophes. Entre 700 et 500 ans BP, les assemblages de diatomees montrent une baisse du niveau d’eau marquee par l’abondance de benthiques oligotrophes alcaliphiles. L’episode 4 (500-200 ans cal BP) est comparable a l’episode 2 et indique aussi des conditions plus humides. Les conditions actuelles se mettent en place sur les 200 dernieres annees, avec un developpement de diatomees benthiques et epiphytes, typiques des mares inondees durant la saison des pluies. Les variations d’humidite de ce marais au cours de ces deux millenaires peuvent s’expliquer par des modifications de la saisonnalite et des quantites de precipitations regionales mais aussi par les conditions hydrologiques locales.Mots cles: Gabon, Marais, Savane, Diatomees, Habitat, Trophie, PaleohydrologieEnglish AbstractThis paper presents the results of the analysis of changes in diatoms assemblages along the core derived from the Paurosa Marsh (0° 12'47.4 ' 'S; 11 35'19.3 ' 'E), which is located in a forest-savanna mosaic at the northern of Lope National Park, Gabon. The data obtained led to the reconstruction of the paleaeohydrological history of this marsh for the past 2000 years. The well-diversified diatom microflora shows significant changes during this period. At the base of the core (2000-1700 cal yr BP), the predominance of benthic diatoms dominated by Pinnularia viridiformis indicates a phase of low water level with probably a clear water column. The episode that follows between 1700-700 cal yr BP shows an evolution towards wetter conditions marked by high abundances of acidophilous tychoplanktonic and oligotrophic species. Between 700 and 500 cal yr BP, the diatoms assemblages show a decrease of water level marked by high abundances of benthic alcaliphilous and oligotrophic species. Episode 4 (500 to 200 cal yr BP) is comparable to episode 2, thus indicates more humid conditions than before. The modern conditions were established since the last 200 years, with the development of benthic and epiphytic diatoms, typical of ponds flooded during the rainy season. The humidity variations of this marsh during these two millennia can be explain","PeriodicalId":9401,"journal":{"name":"Cameroon Journal of Experimental Biology","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78354953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Au Burkina Faso, les populations de lapins sont peu connues. En vue d’evaluer la variabilite phenotypique de ces populations de lapins, une etude a ete realisee dans les quatre zones agro ecologiques du pays (nord sahelienne, sud sahelienne, nord soudanienne et sud soudanienne). L’etude a porte sur un total de 450 lapins âges d’au moins six mois repartis dans 152 elevages. Les resultats suivants ont ete obtenus : le poids vif moyen des lapins adultes est de 1961,92 ± 304,43g pour les mâles et de 2012,98 ± 375,94g pour les femelles. Les lapins de la zone sud soudanienne ont un poids plus eleve (1984,42 ± 339,56g pour les mâles et 2024,63 ± 399,32g pour les femelles) que les autres. La longueur totale moyenne (tete, corps et queue) est de 49,92 ± 4,19cm pour les mâles et de 50,39 ± 4,75cm pour les femelles. Les lapins de la zone sud soudanienne ont la plus grande longueur (51,72 ± 4,17cm pour les mâles et 52,37 ± 4,39cm pour les femelles). Aucune difference significative n’a ete observee au seuil de 5%. Deux types genetiques de lapins sont rencontres, les lapins albinos et les lapins non albinos. Le pelage peut prendre la coloration agouti, unicolore, argentee, panache de type tachete ou plaque et multicolore. Les motifs de la robe peuvent etre unis, panachures, tachetes ou mouchetes. La quasi-totalite des lapins etudies ont des poils ordinaires, normaux, moyens et doux. Tous les lapins etudies ont une queue repliee vers le dos, une tete bombee, des oreilles dressees et une visibilite des irrigations sanguines de l’oreille. Les yeux sont rouges ou noirs. La peau et les griffes sont pigmentees ou depigmentees. Ces resultats montrent l’existence d’une variabilite phenotypique entre les populations des lapins au Burkina Faso.Mots cles: lapin, phenotype, caracteristiques, population, Burkina FasoEnglish AbstractIn Burkina Faso rabbit populations are poorly known. In order to evaluate the morphobiometric variability of these rabbit populations, a study was carried out in the four agro-ecological zones of the country (northern Sahelian, southern Sahelian, northern Sudan and southern Sudan). A total of 450 rabbits were selected from 152 farms for the study. The following results were obtained: mean live weight of adult rabbits was 1961.92 ± 304.43 g for males and of 2012.98 ± 375.94 g for females. Rabbits in the southern Sudanian zone have a higher weight (1984.42 ± 339.56 g for males and 2024.63 ± 399.32 g for females) than the others. The average total length is 49.92 ± 4.19 cm for males and 50.39 ± 4.75 cm for females. Rabbits in the southern Sudanian zone have the longest length (51.72 ± 4.17 cm for males and 52.37 ± 4.39 cm for females). Two types of rabbits are encountered, albino rabbits and non-albino rabbits. The coat can be agouti, single colored, silvered, variegated spotted or plated and multicolored. The patterns of the dress can be united, variegated, spotted or speckled. Almost all the rabbits studied have ordinary, normal, medium and soft
{"title":"Caractéristiques morpho biométriques des populations de lapin (Oryctolagus cuniculus) au Burkina Faso","authors":"Bakari Traore, Chérubin Hien Ollo, Boureima Diarra, Alain Désiré Nikiema, Valérie Bougouma Yameogo, Andrien A.M.G. Belem","doi":"10.4314/cajeb.v12i1.1","DOIUrl":"https://doi.org/10.4314/cajeb.v12i1.1","url":null,"abstract":"Au Burkina Faso, les populations de lapins sont peu connues. En vue d’evaluer la variabilite phenotypique de ces populations de lapins, une etude a ete realisee dans les quatre zones agro ecologiques du pays (nord sahelienne, sud sahelienne, nord soudanienne et sud soudanienne). L’etude a porte sur un total de 450 lapins âges d’au moins six mois repartis dans 152 elevages. Les resultats suivants ont ete obtenus : le poids vif moyen des lapins adultes est de 1961,92 ± 304,43g pour les mâles et de 2012,98 ± 375,94g pour les femelles. Les lapins de la zone sud soudanienne ont un poids plus eleve (1984,42 ± 339,56g pour les mâles et 2024,63 ± 399,32g pour les femelles) que les autres. La longueur totale moyenne (tete, corps et queue) est de 49,92 ± 4,19cm pour les mâles et de 50,39 ± 4,75cm pour les femelles. Les lapins de la zone sud soudanienne ont la plus grande longueur (51,72 ± 4,17cm pour les mâles et 52,37 ± 4,39cm pour les femelles). Aucune difference significative n’a ete observee au seuil de 5%. Deux types genetiques de lapins sont rencontres, les lapins albinos et les lapins non albinos. Le pelage peut prendre la coloration agouti, unicolore, argentee, panache de type tachete ou plaque et multicolore. Les motifs de la robe peuvent etre unis, panachures, tachetes ou mouchetes. La quasi-totalite des lapins etudies ont des poils ordinaires, normaux, moyens et doux. Tous les lapins etudies ont une queue repliee vers le dos, une tete bombee, des oreilles dressees et une visibilite des irrigations sanguines de l’oreille. Les yeux sont rouges ou noirs. La peau et les griffes sont pigmentees ou depigmentees. Ces resultats montrent l’existence d’une variabilite phenotypique entre les populations des lapins au Burkina Faso.Mots cles: lapin, phenotype, caracteristiques, population, Burkina FasoEnglish AbstractIn Burkina Faso rabbit populations are poorly known. In order to evaluate the morphobiometric variability of these rabbit populations, a study was carried out in the four agro-ecological zones of the country (northern Sahelian, southern Sahelian, northern Sudan and southern Sudan). A total of 450 rabbits were selected from 152 farms for the study. The following results were obtained: mean live weight of adult rabbits was 1961.92 ± 304.43 g for males and of 2012.98 ± 375.94 g for females. Rabbits in the southern Sudanian zone have a higher weight (1984.42 ± 339.56 g for males and 2024.63 ± 399.32 g for females) than the others. The average total length is 49.92 ± 4.19 cm for males and 50.39 ± 4.75 cm for females. Rabbits in the southern Sudanian zone have the longest length (51.72 ± 4.17 cm for males and 52.37 ± 4.39 cm for females). Two types of rabbits are encountered, albino rabbits and non-albino rabbits. The coat can be agouti, single colored, silvered, variegated spotted or plated and multicolored. The patterns of the dress can be united, variegated, spotted or speckled. Almost all the rabbits studied have ordinary, normal, medium and soft ","PeriodicalId":9401,"journal":{"name":"Cameroon Journal of Experimental Biology","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76075298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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