Ibtissem Sanah, S. Becila, F. Djeghim, Abdelghani Boudjellal
In Algeria, rabbit meat consumption is insufficiently anchored in culinary traditions compared to other types of meat that are widely consumed, namely sheep and chicken. The purpose of this research is to investigate the influence of sociogeographic variables, both intrinsic and extrinsic quality cues, on consumption frequency, purchasing decision, motivations and the main deterrents to rabbit meat consumption. A survey is conducted with 360 consumers across 15 wilayas (districts) in Eastern Algeria. The results help us draw a conclusion that rabbit meat is consumed in all surveyed wilayas with a low frequency of consumption for the majority of respondents (79%). On the one hand, the causes of consumption are mainly: good taste (59%) and nutritional value (27%). On the other hand, the limiting factors are different: scarcity of rabbit meat on the market (42%), price (22%), eating habits (17%), lack of information on nutritional value (13%), bad taste (3%) and its resemblance to cat meat (3%). Regarding purchasing criteria, tenderness (58%) and freshness (14%) were chosen by most consumers. Although most consumers recognise the nutritional benefits of rabbit meat, it is poorly ranked in the choice of its consumers, placing it fourth after sheep, beef and poultry. Cross tabulation results show that gender, employment status and geographical areas are three variables that significantly affect the consumer’s perception and behaviour towards rabbit meat. This study is the first to analyse the Algerian consumer profile and sheds light on factors encouraging and hindering rabbit meat consumption.
{"title":"Rabbit meat in the east of Algeria: motivation and obstacles to consumption","authors":"Ibtissem Sanah, S. Becila, F. Djeghim, Abdelghani Boudjellal","doi":"10.4995/wrs.2020.13419","DOIUrl":"https://doi.org/10.4995/wrs.2020.13419","url":null,"abstract":"In Algeria, rabbit meat consumption is insufficiently anchored in culinary traditions compared to other types of meat that are widely consumed, namely sheep and chicken. The purpose of this research is to investigate the influence of sociogeographic variables, both intrinsic and extrinsic quality cues, on consumption frequency, purchasing decision, motivations and the main deterrents to rabbit meat consumption. A survey is conducted with 360 consumers across 15 wilayas (districts) in Eastern Algeria. The results help us draw a conclusion that rabbit meat is consumed in all surveyed wilayas with a low frequency of consumption for the majority of respondents (79%). On the one hand, the causes of consumption are mainly: good taste (59%) and nutritional value (27%). On the other hand, the limiting factors are different: scarcity of rabbit meat on the market (42%), price (22%), eating habits (17%), lack of information on nutritional value (13%), bad taste (3%) and its resemblance to cat meat (3%). Regarding purchasing criteria, tenderness (58%) and freshness (14%) were chosen by most consumers. Although most consumers recognise the nutritional benefits of rabbit meat, it is poorly ranked in the choice of its consumers, placing it fourth after sheep, beef and poultry. Cross tabulation results show that gender, employment status and geographical areas are three variables that significantly affect the consumer’s perception and behaviour towards rabbit meat. This study is the first to analyse the Algerian consumer profile and sheds light on factors encouraging and hindering rabbit meat consumption.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46260952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Analysis of production systems allows scientists to identify their weaknesses, particularly concerning production practices which require improvements at economic, social, and environmental levels. The present study aimed to characterise rabbit farms in the urban and peri-urban areas of South Benin and assess their sustainability using the DIAMOND method, a multicriteria sustainability assessment tool. Ninety-eight farmers were surveyed and individually interviewed. Categorical principal component and twostep cluster analyses were performed on information collected for a typology of farms. Sustainability scores were generated using the scoring scale of the DIAMOND tool. Five types of rabbit farms were identified as follows: modern extensive polyculture, traditional extensive monoculture, modern extensive monoculture, semi-intensive polyculture, and traditional extensive polyculture. Overall, all the rabbit farms had good scores for the economic sustainability pillar but were socially limited. They were all similar in their economic and environmental performances. In particular, semi-intensive farms were the most socially sustainable, whereas traditional farms (either in polyculture or monoculture) showed the lowest social performances. Furthermore, there were significant differences between farms for criteria relating to consumers’ demands and resource use. Semi-intensive farms responded best to consumers’ demands, whereas the traditional polyculture farm type was the most resource use efficient. Overall, in the urban and peri-urban areas of South Benin, the most sustainable rabbit farms were semi-intensive. Irrespective of farm type, positive coefficients of correlations were recorded among the three pillars of sustainability, being significant between the social and economic pillars on one hand, and between the social and environmental pillars on the other hand. These results suggest that efforts to improve farm social performance would also positively affect their economic and environmental performances and improve overall farm sustainability.
{"title":"Typology and sustainability assessment of rabbit farms in the urban and peri-urban areas of Southern Benin (West Africa)","authors":"Esteban Henoc Medenou, B. I. Koura, L. H. Dossa","doi":"10.4995/wrs.2020.13368","DOIUrl":"https://doi.org/10.4995/wrs.2020.13368","url":null,"abstract":"Analysis of production systems allows scientists to identify their weaknesses, particularly concerning production practices which require improvements at economic, social, and environmental levels. The present study aimed to characterise rabbit farms in the urban and peri-urban areas of South Benin and assess their sustainability using the DIAMOND method, a multicriteria sustainability assessment tool. Ninety-eight farmers were surveyed and individually interviewed. Categorical principal component and twostep cluster analyses were performed on information collected for a typology of farms. Sustainability scores were generated using the scoring scale of the DIAMOND tool. Five types of rabbit farms were identified as follows: modern extensive polyculture, traditional extensive monoculture, modern extensive monoculture, semi-intensive polyculture, and traditional extensive polyculture. Overall, all the rabbit farms had good scores for the economic sustainability pillar but were socially limited. They were all similar in their economic and environmental performances. In particular, semi-intensive farms were the most socially sustainable, whereas traditional farms (either in polyculture or monoculture) showed the lowest social performances. Furthermore, there were significant differences between farms for criteria relating to consumers’ demands and resource use. Semi-intensive farms responded best to consumers’ demands, whereas the traditional polyculture farm type was the most resource use efficient. Overall, in the urban and peri-urban areas of South Benin, the most sustainable rabbit farms were semi-intensive. Irrespective of farm type, positive coefficients of correlations were recorded among the three pillars of sustainability, being significant between the social and economic pillars on one hand, and between the social and environmental pillars on the other hand. These results suggest that efforts to improve farm social performance would also positively affect their economic and environmental performances and improve overall farm sustainability.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42275566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The present study was undertaken to explore the immunohistochemical localisation of TRPV6 calcium channels in rabbit gut epithelium that are actively involved in calcium absorption. To undertake the research, twelve apparently healthy adult female rabbits with a body weight between 1.0 to 1.5 kg were procured, acclimatised and divided into two groups: control and test. Both groups were kept on same feed along with exogenous calcium supplementation in test group animals only. The serum calcium level revealed that normally a high value of serum calcium is maintained in the rabbit as compared to other mammals, thus indicating that the homeostatic mechanism might be poorly developed. Immunohistochemistry and reverse transcription polymerase chain reaction analysis revealed that the caecum was the site of maximum calcium absorption in rabbit, followed by the duodenum and jejunum. The expression pattern of TRPV6 protein/mRNA was weaker in test group animals than in the control group, indicating that the channel was functional in low calcium concentration in the gut.
{"title":"Patterns of calcium channel (TRPV6) expression in rabbit gut epithelium","authors":"R. Ranjan, P. Das, S. Batabyal, A. P. Minj","doi":"10.4995/wrs.2020.12161","DOIUrl":"https://doi.org/10.4995/wrs.2020.12161","url":null,"abstract":"The present study was undertaken to explore the immunohistochemical localisation of TRPV6 calcium channels in rabbit gut epithelium that are actively involved in calcium absorption. To undertake the research, twelve apparently healthy adult female rabbits with a body weight between 1.0 to 1.5 kg were procured, acclimatised and divided into two groups: control and test. Both groups were kept on same feed along with exogenous calcium supplementation in test group animals only. The serum calcium level revealed that normally a high value of serum calcium is maintained in the rabbit as compared to other mammals, thus indicating that the homeostatic mechanism might be poorly developed. Immunohistochemistry and reverse transcription polymerase chain reaction analysis revealed that the caecum was the site of maximum calcium absorption in rabbit, followed by the duodenum and jejunum. The expression pattern of TRPV6 protein/mRNA was weaker in test group animals than in the control group, indicating that the channel was functional in low calcium concentration in the gut.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41264020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Adeyemi, O. Ibrahim, Oluwabusayomi Omotoyosi Ajayi, Samuel Tobi Ayeni
This study was carried out to assess the effect of dietary levels of zinc on semen indices, growth parameters and testicular sperm reserve of heterogeneous stock of male rabbits. Twenty male rabbits aged 6 mo old were randomly allotted to four groups of five males each and fed diets containing 0, 50, 100 and 150 mg of zinc gluconate per kg diet, respectively, for eight weeks. Semen was collected from the males weekly using an artificial vagina and semen volume (mL), spermatozoa motility (%), sperm concentration (×10 8 /mL) and live sperm cells (%) were assessed. Seminal plasma was separated from the semen by centrifugation, and its zinc concentration was determined using atomic absorption spectrometry. The weights of the males were taken weekly, and the daily feed intake was recorded. At the end of the feeding trial, the rabbits were stunned and slaughtered; the testes and epididymis were carefully removed and homogenised to determine sperm reserves using standard procedure. The result showed that semen indices were not significantly influenced by the dietary levels of zinc gluconate. Seminal zinc concentration was significantly higher in males fed 100 and 150 mg of zinc per kg compared to those in the control group. A higher body weight gain (454±50.3 g), testes weight (6.23±0.25 g) and epididymis weight (1.63±0.59 g) was recorded in males fed diet supplemented with 50 mg of Zinc gluconate per kg. No significant effect of dietary zinc supplementation was recorded in testicular sperm reserve. Epididymal sperm reserve was significantly higher in males fed the diets including 100 and 150 mg of zinc gluconate per kg. In conclusion, dietary levels of zinc gluconate did not improve semen quality and growth indices but increased seminal zinc concentration, which could result in improved prostate health in the heterogeneous stock of male rabbits in the tropics.
{"title":"Semen indices, growth response and sperm reserve of male rabbits fed zinc supplemented diets","authors":"A. Adeyemi, O. Ibrahim, Oluwabusayomi Omotoyosi Ajayi, Samuel Tobi Ayeni","doi":"10.4995/wrs.2020.13507","DOIUrl":"https://doi.org/10.4995/wrs.2020.13507","url":null,"abstract":"This study was carried out to assess the effect of dietary levels of zinc on semen indices, growth parameters and testicular sperm reserve of heterogeneous stock of male rabbits. Twenty male rabbits aged 6 mo old were randomly allotted to four groups of five males each and fed diets containing 0, 50, 100 and 150 mg of zinc gluconate per kg diet, respectively, for eight weeks. Semen was collected from the males weekly using an artificial vagina and semen volume (mL), spermatozoa motility (%), sperm concentration (×10 8 /mL) and live sperm cells (%) were assessed. Seminal plasma was separated from the semen by centrifugation, and its zinc concentration was determined using atomic absorption spectrometry. The weights of the males were taken weekly, and the daily feed intake was recorded. At the end of the feeding trial, the rabbits were stunned and slaughtered; the testes and epididymis were carefully removed and homogenised to determine sperm reserves using standard procedure. The result showed that semen indices were not significantly influenced by the dietary levels of zinc gluconate. Seminal zinc concentration was significantly higher in males fed 100 and 150 mg of zinc per kg compared to those in the control group. A higher body weight gain (454±50.3 g), testes weight (6.23±0.25 g) and epididymis weight (1.63±0.59 g) was recorded in males fed diet supplemented with 50 mg of Zinc gluconate per kg. No significant effect of dietary zinc supplementation was recorded in testicular sperm reserve. Epididymal sperm reserve was significantly higher in males fed the diets including 100 and 150 mg of zinc gluconate per kg. In conclusion, dietary levels of zinc gluconate did not improve semen quality and growth indices but increased seminal zinc concentration, which could result in improved prostate health in the heterogeneous stock of male rabbits in the tropics.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42141150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Zapletal, Kaja Bierowiec-Widórek, B. Czerniejewska-Surma, D. Maj
The aim of the study was to learn about the structure of broiler rabbit skins, with the possibility of using them as dressing for gloves and shoe uppers. The histological structure, organoleptic and rheological properties of leathers such as tensile and puncture strength, energy state based on dynamic tests and topography map of their thickness were assessed. The study material included the skins of two groups of hybrid rabbits (F1), 24 pieces each, from breeds crossing: ♂ Belgian Giant Grey × ♀ Burgundy (BOS×BU), or ♂ Belgian Giant Grey × ♀ New Zealand White (BOS×BNZ). Histological, rheological, organoleptic and topography thickness studies of broiler rabbit leathers have proven that they can be intended for the production of not only gloves, but also shoe uppers. The leathers of BOS x BU hybrid proved to be a better raw material than BOS x BNZ for the production of both gloves and footwear.
这项研究的目的是了解肉鸡兔皮肤的结构，并有可能将它们用作手套和鞋面的敷料。对皮革的组织结构、感官和流变性能(如拉伸和穿刺强度、基于动态测试的能量状态)和厚度地形图进行了评估。研究材料包括两组杂交兔(F1)的皮肤，每组24块，来自杂交品种:♂比利时巨灰×♀勃艮第(BOS×BU)或♂比利时巨灰×♀新西兰白(BOS×BNZ)。肉鸡兔革的组织学、流变学、感官学和地形厚度研究证明，肉鸡兔革不仅可以用于生产手套，还可以用于生产鞋面。BOS x BU混合皮革被证明是比BOS x BNZ更好的原材料，用于手套和鞋类的生产。
{"title":"The suitability of using broiler rabbit leathers in gloves and footwear manufacturing","authors":"P. Zapletal, Kaja Bierowiec-Widórek, B. Czerniejewska-Surma, D. Maj","doi":"10.4995/wrs.2020.13928","DOIUrl":"https://doi.org/10.4995/wrs.2020.13928","url":null,"abstract":"The aim of the study was to learn about the structure of broiler rabbit skins, with the possibility of using them as dressing for gloves and shoe uppers. The histological structure, organoleptic and rheological properties of leathers such as tensile and puncture strength, energy state based on dynamic tests and topography map of their thickness were assessed. The study material included the skins of two groups of hybrid rabbits (F1), 24 pieces each, from breeds crossing: ♂ Belgian Giant Grey × ♀ Burgundy (BOS×BU), or ♂ Belgian Giant Grey × ♀ New Zealand White (BOS×BNZ). Histological, rheological, organoleptic and topography thickness studies of broiler rabbit leathers have proven that they can be intended for the production of not only gloves, but also shoe uppers. The leathers of BOS x BU hybrid proved to be a better raw material than BOS x BNZ for the production of both gloves and footwear.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45902310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
F. Zigo, Ondřej Pyskatý, S. Ondrašovičová, M. Zigová, V. Šimek, P. Supuka
Generally, in recent times across the breeding spectrum, rabbits of giant, medium, small and dwarf breeds have been reared. The largest representation among breeders at most breeding exhibitions held in central European countries is amongst giant and medium breeds. The aim of this work was to evaluate the qualities and exterior faults in selected giant and medium rabbit breeds in different colour varieties according to a current book of rabbit standards. Of 1779 rabbits from 11 exhibitions held in the territory of the Czech and Slovak Republics, 646 giant rabbits weighing 5.5 kg and over and 1133 medium rabbits between 3.25 to 5.5 kg of different breeds and colour varieties were selected. Giant (large) breeds population included 210 of Giant, 187 of Giant Papillon and 249 of Lop. In the medium weight category, 308 of Big Light Silver, 184 of Chinchilla Giganta and 641 of Vienna group breeds were selected. The qualities and exterior faults of typical breed traits were evaluated in six positions: weight, shape, type, coat, top colour or markings and undercolour. The results of the work show that the most common exterior faults in these categories were in the shape, type and coat positions. In the shape position, significant exterior faults were found, such as slightly protruding hips with slanting rump, worse legs position with bowed or splayed limbs and loose skin on the body. Especially observed in the type position in all selected breeds were narrow chest, body too lean or too long and a more delicate head with finer structure of ears. The coat was usually thick and less elastic with the lighter undercolour at the base of the skin and non-sharply defined intermediate colour. The data obtained are ground-breaking, representing a new approach to assist in the characterisation of giant and medium rabbit breeds included in a study and to select individuals with the best exterior properties with a view to improving the breed quality.
{"title":"Comparison of exterior traits in selected giant and medium rabbit breeds","authors":"F. Zigo, Ondřej Pyskatý, S. Ondrašovičová, M. Zigová, V. Šimek, P. Supuka","doi":"10.4995/wrs.2020.12937","DOIUrl":"https://doi.org/10.4995/wrs.2020.12937","url":null,"abstract":"Generally, in recent times across the breeding spectrum, rabbits of giant, medium, small and dwarf breeds have been reared. The largest representation among breeders at most breeding exhibitions held in central European countries is amongst giant and medium breeds. The aim of this work was to evaluate the qualities and exterior faults in selected giant and medium rabbit breeds in different colour varieties according to a current book of rabbit standards. Of 1779 rabbits from 11 exhibitions held in the territory of the Czech and Slovak Republics, 646 giant rabbits weighing 5.5 kg and over and 1133 medium rabbits between 3.25 to 5.5 kg of different breeds and colour varieties were selected. Giant (large) breeds population included 210 of Giant, 187 of Giant Papillon and 249 of Lop. In the medium weight category, 308 of Big Light Silver, 184 of Chinchilla Giganta and 641 of Vienna group breeds were selected. The qualities and exterior faults of typical breed traits were evaluated in six positions: weight, shape, type, coat, top colour or markings and undercolour. The results of the work show that the most common exterior faults in these categories were in the shape, type and coat positions. In the shape position, significant exterior faults were found, such as slightly protruding hips with slanting rump, worse legs position with bowed or splayed limbs and loose skin on the body. Especially observed in the type position in all selected breeds were narrow chest, body too lean or too long and a more delicate head with finer structure of ears. The coat was usually thick and less elastic with the lighter undercolour at the base of the skin and non-sharply defined intermediate colour. The data obtained are ground-breaking, representing a new approach to assist in the characterisation of giant and medium rabbit breeds included in a study and to select individuals with the best exterior properties with a view to improving the breed quality.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44892316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The present study was designed to investigate the effect of seasonality on the quality and fertility of cryopreserved New Zealand white (NZW) rabbit semen under Egyptian conditions. Semen was collected from fifteen mature rabbit bucks during winter, spring, summer and autumn seasons, diluted in INRA-82 extender and cryopreserved in liquid nitrogen. Following the freezing/thawing process, semen samples were evaluated for semen quality parameters. We also investigated whether seasonality could affect postthaw fertility. The results showed that semen collected and processed during winter, autumn, and spring significantly improved ( P <0.05) sperm motility (56.33, 54.12 and 54.00%, respectively), live sperm (59.24, 58.34 and 57.01%, respectively), functional membrane integrity hypo osmotic swelling test (67.34, 64.59 and 64.31%, respectively), acrosome intactness (79.25, 77.45 and 76.72%, respectively) and sperm with non-fragmented DNA (75.66, 74.02% and 72.53%, respectively) in comparison with semen collected and processed in summer season (30.24, 33.26, 42.51, 51.20 and 40.22%, respectively). The fertility results revealed that conception and kindling rates were significantly higher ( P <0.05) when semen samples were collected and processed in winter (80.00 and 76.00%, respectively) in comparison with those collected and processed in autumn (74.00 and 70.00%, respectively), spring (70.00 and 64.00%, respectively) and summer (30.00 and 20.00%, respectively). In summary, our results show that the quality and fertility of cryopreserved NZW rabbit buck semen depends on the season during which the semen is collected and processed. Moreover, for the best fertility results in doe insemination, semen collected and processed (cryopreserved) in winter season should be used.
{"title":"Effect of seasonality on quality and fertility of cryopreserved New Zealand white rabbit semen under Egyptian conditions","authors":"A. Fadl","doi":"10.4995/WRS.2020.13627","DOIUrl":"https://doi.org/10.4995/WRS.2020.13627","url":null,"abstract":"The present study was designed to investigate the effect of seasonality on the quality and fertility of cryopreserved New Zealand white (NZW) rabbit semen under Egyptian conditions. Semen was collected from fifteen mature rabbit bucks during winter, spring, summer and autumn seasons, diluted in INRA-82 extender and cryopreserved in liquid nitrogen. Following the freezing/thawing process, semen samples were evaluated for semen quality parameters. We also investigated whether seasonality could affect postthaw fertility. The results showed that semen collected and processed during winter, autumn, and spring significantly improved ( P <0.05) sperm motility (56.33, 54.12 and 54.00%, respectively), live sperm (59.24, 58.34 and 57.01%, respectively), functional membrane integrity hypo osmotic swelling test (67.34, 64.59 and 64.31%, respectively), acrosome intactness (79.25, 77.45 and 76.72%, respectively) and sperm with non-fragmented DNA (75.66, 74.02% and 72.53%, respectively) in comparison with semen collected and processed in summer season (30.24, 33.26, 42.51, 51.20 and 40.22%, respectively). The fertility results revealed that conception and kindling rates were significantly higher ( P <0.05) when semen samples were collected and processed in winter (80.00 and 76.00%, respectively) in comparison with those collected and processed in autumn (74.00 and 70.00%, respectively), spring (70.00 and 64.00%, respectively) and summer (30.00 and 20.00%, respectively). In summary, our results show that the quality and fertility of cryopreserved NZW rabbit buck semen depends on the season during which the semen is collected and processed. Moreover, for the best fertility results in doe insemination, semen collected and processed (cryopreserved) in winter season should be used.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41432418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Z. Matics, R. Kasza, Z. Gerencsér, I. Radnai, A. Dalle Zotte, M. Cullere, Z. Szendrő
The aim of the study was to examine the effect of hair shearing in growing rabbits reared at high ambient temperature. The live performance and carcass traits of growing rabbits reared at 20°C (not sheared, C, n=50) or at 28°C (not sheared, H, n=50, or sheared at 5, 7 and 9 wk, HS, n=50) were compared. The ambient temperature and relative humidity were 20.5±1.1°C and 54±11% in the 20°C room and 28.8±0.2°C and 35±8% in 28°C room, respectively. Feed intake of H and HS groups decreased by 29.0 and 20.4%, respectively, compared to C rabbits ( P <0.001). The same data for weight gain were 24.6 and 16.9% ( P <0.001), and for body weight at 12 wk were 16.8 and 11.5% ( P <0.001). At the same time, the feed conversion ratio improved (C: 3.53, HS: 3.34, H: 3.31; P <0.001). Nevertheless, the mortality rate of rabbits was not affected by the studied treatment and was overall low (0-4%). No differences were observed in dressing out percentages either (ratio of chilled carcass (CC) to the slaughter weight: 61.6-61.9%). The ratio of liver to CC differed among the experimental groups, with the highest value recorded in C group and the lowest in H group; HS rabbits showed intermediate results (C: 4.86%, HS: 4.27%, H: 3.91%; P <0.001). Lower ratios of fat deposits to reference carcass were also observed in rabbits kept at high ambient temperature (perirenal fat: C: 2.59%, HS: 1.82%, H: 1.60%; P <0.001; scapular fat: C: 0.89%, HS: 0.66%, H: 0.51%; P <0.001). It can be concluded that the negative effect of higher ambient temperature (28 vs. 20°C) on production in growing rabbits can be reduced significantly by hair shearing.
{"title":"Effect of hair shearing on live performance and carcass traits of growing rabbits under hot ambient temperature","authors":"Z. Matics, R. Kasza, Z. Gerencsér, I. Radnai, A. Dalle Zotte, M. Cullere, Z. Szendrő","doi":"10.4995/WRS.2020.13164","DOIUrl":"https://doi.org/10.4995/WRS.2020.13164","url":null,"abstract":"The aim of the study was to examine the effect of hair shearing in growing rabbits reared at high ambient temperature. The live performance and carcass traits of growing rabbits reared at 20°C (not sheared, C, n=50) or at 28°C (not sheared, H, n=50, or sheared at 5, 7 and 9 wk, HS, n=50) were compared. The ambient temperature and relative humidity were 20.5±1.1°C and 54±11% in the 20°C room and 28.8±0.2°C and 35±8% in 28°C room, respectively. Feed intake of H and HS groups decreased by 29.0 and 20.4%, respectively, compared to C rabbits ( P <0.001). The same data for weight gain were 24.6 and 16.9% ( P <0.001), and for body weight at 12 wk were 16.8 and 11.5% ( P <0.001). At the same time, the feed conversion ratio improved (C: 3.53, HS: 3.34, H: 3.31; P <0.001). Nevertheless, the mortality rate of rabbits was not affected by the studied treatment and was overall low (0-4%). No differences were observed in dressing out percentages either (ratio of chilled carcass (CC) to the slaughter weight: 61.6-61.9%). The ratio of liver to CC differed among the experimental groups, with the highest value recorded in C group and the lowest in H group; HS rabbits showed intermediate results (C: 4.86%, HS: 4.27%, H: 3.91%; P <0.001). Lower ratios of fat deposits to reference carcass were also observed in rabbits kept at high ambient temperature (perirenal fat: C: 2.59%, HS: 1.82%, H: 1.60%; P <0.001; scapular fat: C: 0.89%, HS: 0.66%, H: 0.51%; P <0.001). It can be concluded that the negative effect of higher ambient temperature (28 vs. 20°C) on production in growing rabbits can be reduced significantly by hair shearing.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42100479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Ramadan, E. Manaa, M.E. El-Attrony, A. E. El Nagar
The objectives of the present study were 1) to evaluate the polymorphism of growth hormone(GH), insulin-like growth factor 2 (IGF2) and progesterone receptor (PGR) genes in Sinai Gabali rabbits, and 2) to assess their associations with growth, litter size and milk production traits in Sinai Gabali rabbits. The C>T, A>Del and A>G single nucleotide polymorphisms of GH, IGF2 and PGR genes were genotyped by polymerase chain reaction-restriction fragment length polymorphism using BstUI, HpyF31 and BsaI restriction enzymes, respectively. The C/T genotype of GH gene recorded the heaviest body weights for body weight (BW) at 8 wk (1190.22±19.29 g) and 12 wk of age (1842.46±30.19 g) and recorded the largest litter size at birth (LSB: 7.37±0.12 kits) traits. The Del/Del genotype of IGF2 gene showed the superiority over the other genotypes for BW at 4 wk (507.17±8.87 g), 8 wk (1239.39±14.0 g), and 12 wk of age (1950.15±18.1 g), as well as for daily weight gain from 4 to 8 wk (26.05±0.37 g/d), and from 8 to 12 wk of age (25.48±0.56 g/d) traits. The G/G genotype of the PGR gene showed superiority for LSB (7.51±0.13 kits) and litter size at weaning (6.53±0.14 kits) traits over the other genotypes. Regarding milk yield traits; the C/C, A/A and A/A genotypes of GH, IGF2 and PGR genes yielded more milk compared to the other genotypes. The means of total milk yield in 28 d for these genotypes were 2936±29 g, 2921±43 g and 2930±35 g, respectively. Thus, GH, IGF2 and PGR genes might be useful for marker-assisted selection programmes for improvement of rabbit growth, litter size and milk yield traits.
{"title":"Association of growth hormone (GH), insulin-like growth factor 2 (IGF2) and progesterone receptor (PGR) genes with some productive traits in Gabali rabbits","authors":"S. Ramadan, E. Manaa, M.E. El-Attrony, A. E. El Nagar","doi":"10.4995/WRS.2020.12610","DOIUrl":"https://doi.org/10.4995/WRS.2020.12610","url":null,"abstract":"The objectives of the present study were 1) to evaluate the polymorphism of growth hormone(GH), insulin-like growth factor 2 (IGF2) and progesterone receptor (PGR) genes in Sinai Gabali rabbits, and 2) to assess their associations with growth, litter size and milk production traits in Sinai Gabali rabbits. The C>T, A>Del and A>G single nucleotide polymorphisms of GH, IGF2 and PGR genes were genotyped by polymerase chain reaction-restriction fragment length polymorphism using BstUI, HpyF31 and BsaI restriction enzymes, respectively. The C/T genotype of GH gene recorded the heaviest body weights for body weight (BW) at 8 wk (1190.22±19.29 g) and 12 wk of age (1842.46±30.19 g) and recorded the largest litter size at birth (LSB: 7.37±0.12 kits) traits. The Del/Del genotype of IGF2 gene showed the superiority over the other genotypes for BW at 4 wk (507.17±8.87 g), 8 wk (1239.39±14.0 g), and 12 wk of age (1950.15±18.1 g), as well as for daily weight gain from 4 to 8 wk (26.05±0.37 g/d), and from 8 to 12 wk of age (25.48±0.56 g/d) traits. The G/G genotype of the PGR gene showed superiority for LSB (7.51±0.13 kits) and litter size at weaning (6.53±0.14 kits) traits over the other genotypes. Regarding milk yield traits; the C/C, A/A and A/A genotypes of GH, IGF2 and PGR genes yielded more milk compared to the other genotypes. The means of total milk yield in 28 d for these genotypes were 2936±29 g, 2921±43 g and 2930±35 g, respectively. Thus, GH, IGF2 and PGR genes might be useful for marker-assisted selection programmes for improvement of rabbit growth, litter size and milk yield traits.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43412708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Zemzmi, L. Ródenas, E. Blas, H. Abdouli, T. Najar, J. J. Pascual
This study is supported by the Interministerial Commission for Science and Technology (CICYT) of the Spanish Government (AGL2017-85162-C2-1R), the Universitat Politecnica de Valencia (Project 20180290; Spain), and the Higher School of Agriculture of Mateur of the Carthage University (Tunisia Republic). Grant assistance for Jihed Zemzmi from the Carthage University is also gratefully acknowledged.
{"title":"Preliminary evaluation of fenugreek (Trigonella foenum-graecum) seed gum as a potential prebiotic for growing rabbits in Tunisia: effects on in vivo faecal digestibility and in vitro fermentation","authors":"J. Zemzmi, L. Ródenas, E. Blas, H. Abdouli, T. Najar, J. J. Pascual","doi":"10.4995/WRS.2020.12994","DOIUrl":"https://doi.org/10.4995/WRS.2020.12994","url":null,"abstract":"This study is supported by the Interministerial Commission for Science and Technology (CICYT) of the Spanish Government (AGL2017-85162-C2-1R), the Universitat Politecnica de Valencia (Project 20180290; Spain), and the Higher School of Agriculture of Mateur of the Carthage University (Tunisia Republic). Grant assistance for Jihed Zemzmi from the Carthage University is also gratefully acknowledged.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48757968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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