Pub Date : 2020-01-15DOI: 10.21071/az.v69i266.5117
L. M. Sanvicente, L. S. Vargas, G. A. Bustamante, V. Jaramillo
The study analyzed the raising of domestic free ranging pigs and wild peccaries in order to determine the social, economic and environmental benefits in communities located in the transition zone of the Calakmul Biosphere Reserve, Mexico. The information was obtained from 169 farmers involved in pig keeping from a census conducted in 13 communities. The information of the production unit, the pig herd, the feeding, the productive and reproductive parameters, the commercialization, the costs and income was recorded in a questionnaire. The data were analyzed with frequencies, analysis of variance, cluster, factorial and principal components with the SAS statistical package. Three systems of productions of domestic pigs in free-range were identified: backyard pigs raising (23,1%), seasonal roaming pigs (21,9%), and free roaming pigs (55%) The three systems had the collared peccary (Pecari tajacu) as a reproduction form in captivity of this wildlife species. The backyard pig raising was the most intensive in labor force, cutting forage, maize and feed purchase. The seasonal roaming pigs was evaluated as intermediate in the use of resources and supplies. The free roaming pigs was the one with the highest relation with the captive collared peccary breeding, and uses the natural ecosystems and it was not market oriented. The backyard and seasonal roaming pigs were classified like transition towards the stalf feed pigs, free ranging decreased and the use of external supplies increased.
{"title":"La crianza de cerdos en vida libre y pecaríes silvestres en zonas de transición de áreas protegidas del sureste de México","authors":"L. M. Sanvicente, L. S. Vargas, G. A. Bustamante, V. Jaramillo","doi":"10.21071/az.v69i266.5117","DOIUrl":"https://doi.org/10.21071/az.v69i266.5117","url":null,"abstract":"The study analyzed the raising of domestic free ranging pigs and wild peccaries in order to determine the social, economic and environmental benefits in communities located in the transition zone of the Calakmul Biosphere Reserve, Mexico. The information was obtained from 169 farmers involved in pig keeping from a census conducted in 13 communities. The information of the production unit, the pig herd, the feeding, the productive and reproductive parameters, the commercialization, the costs and income was recorded in a questionnaire. The data were analyzed with frequencies, analysis of variance, cluster, factorial and principal components with the SAS statistical package. Three systems of productions of domestic pigs in free-range were identified: backyard pigs raising (23,1%), seasonal roaming pigs (21,9%), and free roaming pigs (55%) The three systems had the collared peccary (Pecari tajacu) as a reproduction form in captivity of this wildlife species. The backyard pig raising was the most intensive in labor force, cutting forage, maize and feed purchase. The seasonal roaming pigs was evaluated as intermediate in the use of resources and supplies. The free roaming pigs was the one with the highest relation with the captive collared peccary breeding, and uses the natural ecosystems and it was not market oriented. The backyard and seasonal roaming pigs were classified like transition towards the stalf feed pigs, free ranging decreased and the use of external supplies increased.","PeriodicalId":40003,"journal":{"name":"Archivos de Zootecnia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47769759","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}
Pub Date : 2020-01-15DOI: 10.21071/az.v69i266.5110
T. Faria, F. Pinese, F. M. D. A. Gimenes, J. J. A. D. A. Demarchi, F. P. Campos, L. M. Premazzi, W. T. Mattos, L. Gerdes
Objetivou-se fazer a análise exploratória dos resultados bromatológicos e uso de modelos para estimativa de nutrientes digestíveis totais das amostras de silagem de milho gerados a partir de 12 anos de análises comerciais do banco de dados do Laboratório de Nutrição Animal do Instituto de Zootecnia (IZ), em Nova Odessa, SP, Brasil. Como critério, utilizou-se dados de amostras de silagens de milho sem nenhum tipo de aditivos presentes no banco de dados do laboratório, somando 220 amostras nos períodos de 2004 a 2015 e agrupados em quatro triênios. Estes foram caracterizados quanto à sua composição bromatológica através da análise estatística descritiva, correlações de Pearson e pela utilização de modelos de estimativas de NDT calculado através de quatro modelos de equações: uma da Universidade de Clemson, uma segundo Harlan e duas segundo Kearl (1 e 2). O valor nutricional das amostras de silagens de milho mostrou-se de qualidade mediana, com valores de FDN (49,2 a 57,2% da MS) acima do ideal. Todas as equações puderam ser utilizadas na estimativa do NDT (variação de 54,3 a 67,0 nos triênios) sendo que a de Kearl 1 e Clemson apresentaram a maior e a menor variação entre os triênios, respectivamente. O aumento do valor nutritivo e de NDT nos triênios 3 e 4 indica melhoria na qualidade da silagem.
{"title":"Composição bromatológica de silagens de milho comerciais produzidas no Brasil","authors":"T. Faria, F. Pinese, F. M. D. A. Gimenes, J. J. A. D. A. Demarchi, F. P. Campos, L. M. Premazzi, W. T. Mattos, L. Gerdes","doi":"10.21071/az.v69i266.5110","DOIUrl":"https://doi.org/10.21071/az.v69i266.5110","url":null,"abstract":"Objetivou-se fazer a análise exploratória dos resultados bromatológicos e uso de modelos para estimativa de nutrientes digestíveis totais das amostras de silagem de milho gerados a partir de 12 anos de análises comerciais do banco de dados do Laboratório de Nutrição Animal do Instituto de Zootecnia (IZ), em Nova Odessa, SP, Brasil. Como critério, utilizou-se dados de amostras de silagens de milho sem nenhum tipo de aditivos presentes no banco de dados do laboratório, somando 220 amostras nos períodos de 2004 a 2015 e agrupados em quatro triênios. Estes foram caracterizados quanto à sua composição bromatológica através da análise estatística descritiva, correlações de Pearson e pela utilização de modelos de estimativas de NDT calculado através de quatro modelos de equações: uma da Universidade de Clemson, uma segundo Harlan e duas segundo Kearl (1 e 2). O valor nutricional das amostras de silagens de milho mostrou-se de qualidade mediana, com valores de FDN (49,2 a 57,2% da MS) acima do ideal. Todas as equações puderam ser utilizadas na estimativa do NDT (variação de 54,3 a 67,0 nos triênios) sendo que a de Kearl 1 e Clemson apresentaram a maior e a menor variação entre os triênios, respectivamente. O aumento do valor nutritivo e de NDT nos triênios 3 e 4 indica melhoria na qualidade da silagem.","PeriodicalId":40003,"journal":{"name":"Archivos de Zootecnia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43105522","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}
Pub Date : 2020-01-15DOI: 10.21071/az.v69i265.5038
A. Hernández, R. P. D. León
Phenotypic and genealogy date of Siboney de Cuba cows from 1984 to 2016 calving years was used. The goal of this study was to estimate the parameters and breeding values (VG) of production, reproduction and longevity traits. Besides to construct selection index (IS) using principal componente (CP) analysis. The VG of 6 425 cows were estimated for milk yield up to 305 days (VGL305), lactation length (VGDL), age at first calving (VGEP1), calving gestation interval (VGIPG), lifetime yields (VGLTV) y productive life (VGVP). The heredabilities for L305, DL, EP1, IPG, LTV y VP were of 0.16±0.01, 0.04±0.01, 0.04±0.01, 0.44±0.02, 0.05±0.01 y 0.01±0.01, respectively. The genetic correlation between L305 and DL was of 0.36, between EP1, IPG and LTV of 0.36, -0.42 and -0.36, and the VP with the others traits were low (-0.24 to 0.11). The 70.8 % of the total variance of VG was explained for the CP1-3, doing the highest importance the CP1 (32.4 %). Using CP, it is possible to select animals based on only two scores generated by PC1 and PC2 instead of the six VG. It was concluded that it is possible to construct IS based on CP in Siboney de Cuba bovine. Selection for VGL305 and VGDL with PC1 index could be done separately from selection for VGIPG, VGEP1 and VGLTV using PC2 index, and the VP could be improved independent of the other traits using their VG.
{"title":"Índices de selección para la mejora genética de vacas Siboney de Cuba","authors":"A. Hernández, R. P. D. León","doi":"10.21071/az.v69i265.5038","DOIUrl":"https://doi.org/10.21071/az.v69i265.5038","url":null,"abstract":"Phenotypic and genealogy date of Siboney de Cuba cows from 1984 to 2016 calving years was used. The goal of this study was to estimate the parameters and breeding values (VG) of production, reproduction and longevity traits. Besides to construct selection index (IS) using principal componente (CP) analysis. The VG of 6 425 cows were estimated for milk yield up to 305 days (VGL305), lactation length (VGDL), age at first calving (VGEP1), calving gestation interval (VGIPG), lifetime yields (VGLTV) y productive life (VGVP). The heredabilities for L305, DL, EP1, IPG, LTV y VP were of 0.16±0.01, 0.04±0.01, 0.04±0.01, 0.44±0.02, 0.05±0.01 y 0.01±0.01, respectively. The genetic correlation between L305 and DL was of 0.36, between EP1, IPG and LTV of 0.36, -0.42 and -0.36, and the VP with the others traits were low (-0.24 to 0.11). The 70.8 % of the total variance of VG was explained for the CP1-3, doing the highest importance the CP1 (32.4 %). Using CP, it is possible to select animals based on only two scores generated by PC1 and PC2 instead of the six VG. It was concluded that it is possible to construct IS based on CP in Siboney de Cuba bovine. Selection for VGL305 and VGDL with PC1 index could be done separately from selection for VGIPG, VGEP1 and VGLTV using PC2 index, and the VP could be improved independent of the other traits using their VG.","PeriodicalId":40003,"journal":{"name":"Archivos de Zootecnia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42872524","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}
Pub Date : 2020-01-15DOI: 10.21071/az.v69i266.5112
F.H.B. Folake, M. A. Adeyemi, T. Ojo
Gender has not received much attention in training logistics despite its importance for achieving equal access to information on proven innovations and the uptake by farmers. The paper assessed male and female pig farmers’ preference for training logistics, analysed the proximate composition and cost of cassava plant meal and the common feedstuffs. It determined the levels of awareness in alternative feeds by gender, and discussed farmers’ training constraints. Purposive sampling technique was used to select two States and six Local Government Areas based on the preponderance of pig farmers. Structured interview schedule was administered on 300 pig farmers and 18 key informants identified through snow ball sampling technique. Data were subjected to descriptive and inferential statistics. Results include nutritional and cost advantages of cassava plant meal, over 80 % of both gender in their active ages, both gender had high level of awareness in alternative feeds and similarities in preferences for training methods, mode and facilitator. They differ in preferences for training venue, duration, day and time. Results of ANOVA revealed that male and female farmers’ preferences for training logistics differ significantly (p <0.05). In conclusion, farmers’ preference for training logistics was largely determined by cultural diversity in gender relations which if not considered could widen gender gap in access to information on agricultural innovations and hinder improved pig production.
{"title":"Evaluación de género de la preferencia de los agricultores de cerdos para la formación de la logística en el uso de la comida de plantas de yuca en dietas para cerdos en Nigeria del suroeste","authors":"F.H.B. Folake, M. A. Adeyemi, T. Ojo","doi":"10.21071/az.v69i266.5112","DOIUrl":"https://doi.org/10.21071/az.v69i266.5112","url":null,"abstract":"Gender has not received much attention in training logistics despite its importance for achieving equal access to information on proven innovations and the uptake by farmers. The paper assessed male and female pig farmers’ preference for training logistics, analysed the proximate composition and cost of cassava plant meal and the common feedstuffs. It determined the levels of awareness in alternative feeds by gender, and discussed farmers’ training constraints. Purposive sampling technique was used to select two States and six Local Government Areas based on the preponderance of pig farmers. Structured interview schedule was administered on 300 pig farmers and 18 key informants identified through snow ball sampling technique. Data were subjected to descriptive and inferential statistics. Results include nutritional and cost advantages of cassava plant meal, over 80 % of both gender in their active ages, both gender had high level of awareness in alternative feeds and similarities in preferences for training methods, mode and facilitator. They differ in preferences for training venue, duration, day and time. Results of ANOVA revealed that male and female farmers’ preferences for training logistics differ significantly (p <0.05). In conclusion, farmers’ preference for training logistics was largely determined by cultural diversity in gender relations which if not considered could widen gender gap in access to information on agricultural innovations and hinder improved pig production.","PeriodicalId":40003,"journal":{"name":"Archivos de Zootecnia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42384938","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}
Pub Date : 2020-01-15DOI: 10.21071/az.v69i265.5044
J. García-Díaz, G. H. Dungula-Sapalalo, E. Noval-Artiles, M. Hernández-Barreto, Á. Mollineda-Trujillo, R. Garzón-Jarrin
In order to determine the correlation between the cinquemia and the reproductive indicators of the dairy cow and the concentrations of Zn in blood serum that constitute a significant risk for the presentation of the postpartum anestrus and the repetition on service of Artificial Insemination, 143 animals with six to eight elderly years and third and fourth lactation were selected. The correlation between the cinquemia and the reproductive indicators and the association between different concentrations of Zn in blood serum and the anestrus and the repetition on service of Artificial Insemination were determined. The herds present low reproductive efficiency and the cinquemia had a negative correlation (p= 0.0000) with the postpartum anestrus and the interval parturition. For the postpartum anestrus when the lower cinquemia than 15 μmol/L, constituted a relative risk (RR) 1. 74 (p= 0. 0070) and lower than 14 μmol/L, RR 2.69 (p= 0. 0000) and lower to 16 μmol/L was not, RR 1.04 (p= 0.8282). For the repetition of service of Artificial Insemination, the lower cinquemia to 15 μmol/L constituted a relative risk (RR) factor, RR 3.83 (p= 0.0000), lower to 14 μmol/L, RR 5.20 (p= 0.0000) and was not when its concentrations were under 16 μmol/L, RR 1.77 (p= 0.119. It is concluded that that the cinquemia had a negative and highly significant correlation with the reproductive indicators and when it descends from 15 μmol/L it constitutes a significant relative risk to the presentation of anestrous and repetition of service of Artificial Insemination.
{"title":"Relación entre cinquemia y fertilidad en vacas lecheras mestizas Holstein x Cebú","authors":"J. García-Díaz, G. H. Dungula-Sapalalo, E. Noval-Artiles, M. Hernández-Barreto, Á. Mollineda-Trujillo, R. Garzón-Jarrin","doi":"10.21071/az.v69i265.5044","DOIUrl":"https://doi.org/10.21071/az.v69i265.5044","url":null,"abstract":"In order to determine the correlation between the cinquemia and the reproductive indicators of the dairy cow and the concentrations of Zn in blood serum that constitute a significant risk for the presentation of the postpartum anestrus and the repetition on service of Artificial Insemination, 143 animals with six to eight elderly years and third and fourth lactation were selected. The correlation between the cinquemia and the reproductive indicators and the association between different concentrations of Zn in blood serum and the anestrus and the repetition on service of Artificial Insemination were determined. The herds present low reproductive efficiency and the cinquemia had a negative correlation (p= 0.0000) with the postpartum anestrus and the interval parturition. For the postpartum anestrus when the lower cinquemia than 15 μmol/L, constituted a relative risk (RR) 1. 74 (p= 0. 0070) and lower than 14 μmol/L, RR 2.69 (p= 0. 0000) and lower to 16 μmol/L was not, RR 1.04 (p= 0.8282). For the repetition of service of Artificial Insemination, the lower cinquemia to 15 μmol/L constituted a relative risk (RR) factor, RR 3.83 (p= 0.0000), lower to 14 μmol/L, RR 5.20 (p= 0.0000) and was not when its concentrations were under 16 μmol/L, RR 1.77 (p= 0.119. It is concluded that that the cinquemia had a negative and highly significant correlation with the reproductive indicators and when it descends from 15 μmol/L it constitutes a significant relative risk to the presentation of anestrous and repetition of service of Artificial Insemination.","PeriodicalId":40003,"journal":{"name":"Archivos de Zootecnia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44169033","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}
Pub Date : 2020-01-15DOI: 10.21071/az.v69i265.5033
B. Agudo, J. V. Delgado, M. M. López, P. L. Rodriguez
This study verifies the ability of the NIRS technique to correctly classify merino lamb perirenal fat according their feeding during fattening. Different spectral treatments (Absorbance-A, Reflectance-R, A-EMSC, R-EMSC), unsupervised (PCA-Projection) and supervised classification techniques (SIMCA, PLS-DA, LDA, C-SVM) are combined. The results indicate that untreated spectra contain valuable information in terms of classification, despite the existing light scattering. The simplest PCA-Projection and LDA classification methods are also the most effective. Of the other more sophisticated methods, C-SVM is more effective, although it is sensitive to the type of initiation mathematical seed used. It is concluded that NIRS spectroscopy combined with chemometric techniques is a valid method to classify lamb carcasses in slaughter room according to diet during fattening period.
本研究验证了近红外光谱(NIRS)技术在饲养肥育过程中对美利奴羔羊肾周脂肪进行正确分类的能力。不同的光谱处理(absorbances - a, Reflectance-R, A-EMSC, R-EMSC)，无监督(PCA-Projection)和监督分类技术(SIMCA, PLS-DA, LDA, C-SVM)相结合。结果表明，尽管存在光散射，但未经处理的光谱在分类方面包含有价值的信息。最简单的pca -投影和LDA分类方法也是最有效的。在其他更复杂的方法中，C-SVM更有效，尽管它对所使用的起始数学种子的类型很敏感。综上所述，近红外光谱结合化学计量学技术是一种有效的方法，可以对育肥期屠宰室内羔羊尸体进行日粮分类。
{"title":"Comparación de herramientas quimiométricas de clasificación para la identificación de grasa perirrenal en corderos","authors":"B. Agudo, J. V. Delgado, M. M. López, P. L. Rodriguez","doi":"10.21071/az.v69i265.5033","DOIUrl":"https://doi.org/10.21071/az.v69i265.5033","url":null,"abstract":"This study verifies the ability of the NIRS technique to correctly classify merino lamb perirenal fat according their feeding during fattening. Different spectral treatments (Absorbance-A, Reflectance-R, A-EMSC, R-EMSC), unsupervised (PCA-Projection) and supervised classification techniques (SIMCA, PLS-DA, LDA, C-SVM) are combined. The results indicate that untreated spectra contain valuable information in terms of classification, despite the existing light scattering. The simplest PCA-Projection and LDA classification methods are also the most effective. Of the other more sophisticated methods, C-SVM is more effective, although it is sensitive to the type of initiation mathematical seed used. It is concluded that NIRS spectroscopy combined with chemometric techniques is a valid method to classify lamb carcasses in slaughter room according to diet during fattening period.","PeriodicalId":40003,"journal":{"name":"Archivos de Zootecnia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48013416","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}
Pub Date : 2020-01-15DOI: 10.21071/az.v69i266.5107
Sandra Roselí Valerio Lana, L.C.L. Silva, G. Lana, A. A. Leão, R. F. Barros, Tania Marta Carvalho dos Santos, Daniel Silva Santos
The objective of this study was to evaluate the inclusion of the guava pulp residue in broiler quail diets on productive performance, carcass yield, and poultry economic viability at 42 days of age. Two hundred and fifty-one unsexed European quail were distributed in a completely randomized experimental design with five inclusion levels (0.0, 3.0, 6.0, 9.0 and 12.0%) of residue of guava, with five replicates and 10 birds per experimental unit. The variables evaluated during the experimental period were: feed intake (FI), weight gain (WG) and feed conversion (FC), carcass yield, noble cuts and edible offal. No significant differences (P> 0.05) were observed for weight gain, feed intake and feed conversion rate during 1 to 42 days of age. The absolute weights and carcass yields, noble cuts (breast, thigh and drumstick), edible offal and abdominal fat of the quails were not influenced (P> 0.05) by the inclusion levels of the guava pulp residue to the diets. The guava pulp residue can be used as an alternative ingredient in European quail diets up to 3% inclusion level without compromising yield performance, poultry carcass yield and economic viability.
{"title":"Resíduo da polpa de goiaba em dietas para codornas","authors":"Sandra Roselí Valerio Lana, L.C.L. Silva, G. Lana, A. A. Leão, R. F. Barros, Tania Marta Carvalho dos Santos, Daniel Silva Santos","doi":"10.21071/az.v69i266.5107","DOIUrl":"https://doi.org/10.21071/az.v69i266.5107","url":null,"abstract":"The objective of this study was to evaluate the inclusion of the guava pulp residue in broiler quail diets on productive performance, carcass yield, and poultry economic viability at 42 days of age. Two hundred and fifty-one unsexed European quail were distributed in a completely randomized experimental design with five inclusion levels (0.0, 3.0, 6.0, 9.0 and 12.0%) of residue of guava, with five replicates and 10 birds per experimental unit. The variables evaluated during the experimental period were: feed intake (FI), weight gain (WG) and feed conversion (FC), carcass yield, noble cuts and edible offal. No significant differences (P> 0.05) were observed for weight gain, feed intake and feed conversion rate during 1 to 42 days of age. The absolute weights and carcass yields, noble cuts (breast, thigh and drumstick), edible offal and abdominal fat of the quails were not influenced (P> 0.05) by the inclusion levels of the guava pulp residue to the diets. The guava pulp residue can be used as an alternative ingredient in European quail diets up to 3% inclusion level without compromising yield performance, poultry carcass yield and economic viability.","PeriodicalId":40003,"journal":{"name":"Archivos de Zootecnia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48325748","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}
Pub Date : 2020-01-15DOI: 10.21071/az.v69i266.5108
Olatunji Abubakar Jimoh, E. S. Ayedun
A study was designed to evaluate the suitability of watermelon juice as rabbit semen diluent and conception rate of does inseminated. Ripe watermelon (Citrus lanatus) was obtained and processed into juice using the standard procedure. A total of 10 rabbit male and 90 does, all crossbred New Zealand White x Chinchilla were used for the trial. Semen was collected from bucks using artificial vagina, and were diluted with watermelon juice at 1:0, 1:0.25, 1:0.67, 1:1.5, 1:4 semen to diluent and control 1:1 semen to normal saline and designated as T1, T2, T3, T4, T5 and T6; respectively. Semen analysis was conducted on fresh semen and the various diluted semen immediately at 370C. Fifteen does each were randomly allotted to the different treatment in a completely randomized design and were inseminated with their respective treatment using the standard procedure. Conception rate, litter size and productivity index at birth were assessed at the end of the gestation period. Result obtained revealed that the range of values obtained for spermatozoa motility, structural membrane integrity, and acrosome integrity is within the accepted values for good quality semen. The conception rate of does inseminated with watermelon juice diluted semen at 1:1.5 was the optimal dilution rate with 75%. Litter size was significantly (p<0.05) highest (8.15kitts) at 1:0.25 dilution. The significantly (p<0.05) highest productivity index at birth was obtained in watermelon juice diluted rabbit semen at 1:0.25 and 1:1.5 inseminated does. In conclusion, it is revealed that watermelon juice is a potent semen diluent, it optimal dilution for rabbit semen is 1:1.5 and can be incorporated as extender constituent in the preservation of rabbit semen.
{"title":"Calidad y fertilidad del semen de conejo diluido con jugo de sandía.","authors":"Olatunji Abubakar Jimoh, E. S. Ayedun","doi":"10.21071/az.v69i266.5108","DOIUrl":"https://doi.org/10.21071/az.v69i266.5108","url":null,"abstract":"A study was designed to evaluate the suitability of watermelon juice as rabbit semen diluent and conception rate of does inseminated. Ripe watermelon (Citrus lanatus) was obtained and processed into juice using the standard procedure. A total of 10 rabbit male and 90 does, all crossbred New Zealand White x Chinchilla were used for the trial. Semen was collected from bucks using artificial vagina, and were diluted with watermelon juice at 1:0, 1:0.25, 1:0.67, 1:1.5, 1:4 semen to diluent and control 1:1 semen to normal saline and designated as T1, T2, T3, T4, T5 and T6; respectively. Semen analysis was conducted on fresh semen and the various diluted semen immediately at 370C. Fifteen does each were randomly allotted to the different treatment in a completely randomized design and were inseminated with their respective treatment using the standard procedure. Conception rate, litter size and productivity index at birth were assessed at the end of the gestation period. Result obtained revealed that the range of values obtained for spermatozoa motility, structural membrane integrity, and acrosome integrity is within the accepted values for good quality semen. The conception rate of does inseminated with watermelon juice diluted semen at 1:1.5 was the optimal dilution rate with 75%. Litter size was significantly (p<0.05) highest (8.15kitts) at 1:0.25 dilution. The significantly (p<0.05) highest productivity index at birth was obtained in watermelon juice diluted rabbit semen at 1:0.25 and 1:1.5 inseminated does. In conclusion, it is revealed that watermelon juice is a potent semen diluent, it optimal dilution for rabbit semen is 1:1.5 and can be incorporated as extender constituent in the preservation of rabbit semen.","PeriodicalId":40003,"journal":{"name":"Archivos de Zootecnia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44934857","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}
Pub Date : 2020-01-15DOI: 10.21071/az.v69i265.5032
F. González, J. V. D. Bermejo
Archivos de Zootecnia reached its 264 issue during 2019. In the present editorial report, we address the facts and figures derived from the editorial process during the past yearly editorial cycle. Archivos de Zootecnia would like to express its sincere gratitude to the Section Editors involved in the editorial process as well as the Reviewers without whose work our labour, otherwise would not be possible. 646 new members have registered in the website. A total of 544 manuscripts have been submitted. Brazil was the most contributing country, however the percentage of submissions remarkably decreased (52.56%) in favour of an increase of the submissions by authors from other countries. Therefore, the most frequently used language in the manuscripts was Portuguese, followed by English. 79 works were published in 2019: 66 articles, 10 short notes and 3 reviews. Published papers came from 15 countries. The two main topics the articles published were about were “Nutrition and Feeding” (30.77%) and “Breeding and genetics” (14.10%); while the most frequent species the works dealt with was cattle (14.10%). Editorial times between the reception and publication of the manuscripts have cotinued reducing from the previous years’ reports. CiteScore reached a value of 0.44, placing the journal at a Q3 position in Scopus.
《动物志》在2019年发行了264期。在本编辑报告中，我们讨论了过去年度编辑周期中编辑过程中得出的事实和数字。Archivos de Zootecnia谨向参与编辑过程的章节编辑以及没有他们的工作我们就无法工作的审稿人表示诚挚的感谢。646名新会员已在该网站注册。总共提交了544份手稿。巴西是贡献最多的国家，但提交材料的百分比显著下降（52.56%），支持增加其他国家提交的材料。因此，手稿中使用频率最高的语言是葡萄牙语，其次是英语。2019年共发表79篇作品：66篇文章、10篇短文和3篇评论。发表的论文来自15个国家。文章发表的两个主要主题是“营养与喂养”（30.77%）和“育种与遗传学”（14.10%）；而作品中最常见的物种是牛（14.10%）。从收到手稿到发表手稿的编辑时间与前几年的报告相比不断减少。CiteScore达到0.44，使该杂志在Scopus的第三季度排名第三。
{"title":"Archivos de Zootecnia. Informe Editorial 2019","authors":"F. González, J. V. D. Bermejo","doi":"10.21071/az.v69i265.5032","DOIUrl":"https://doi.org/10.21071/az.v69i265.5032","url":null,"abstract":"Archivos de Zootecnia reached its 264 issue during 2019. In the present editorial report, we address the facts and figures derived from the editorial process during the past yearly editorial cycle. Archivos de Zootecnia would like to express its sincere gratitude to the Section Editors involved in the editorial process as well as the Reviewers without whose work our labour, otherwise would not be possible. 646 new members have registered in the website. A total of 544 manuscripts have been submitted. Brazil was the most contributing country, however the percentage of submissions remarkably decreased (52.56%) in favour of an increase of the submissions by authors from other countries. Therefore, the most frequently used language in the manuscripts was Portuguese, followed by English. 79 works were published in 2019: 66 articles, 10 short notes and 3 reviews. Published papers came from 15 countries. The two main topics the articles published were about were “Nutrition and Feeding” (30.77%) and “Breeding and genetics” (14.10%); while the most frequent species the works dealt with was cattle (14.10%). Editorial times between the reception and publication of the manuscripts have cotinued reducing from the previous years’ reports. CiteScore reached a value of 0.44, placing the journal at a Q3 position in Scopus.","PeriodicalId":40003,"journal":{"name":"Archivos de Zootecnia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48374137","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}
Pub Date : 2020-01-15DOI: 10.21071/az.v69i266.5119
Marcelo Vedovatto, A. Bento, C. Kiefer, Karina Márcia Ribeiro de Souza, G. L. Franco
This review was carried out with the objective of describing metabolic changes, clinical signs, methods of prevention, control and detoxification of the main mycotoxins consumed by beef cattle. After the discovery of aflatoxin and the problems that this can cause for animals and also in humans, especially cancer, scientific research has increased year after year, and today more than 18000 secondary metabolites produced by fungi are described, but the most studied are: aflatoxins, ochratoxin A, trichothecenes, zearalenone, patulin, fumonisin and Ergot alkaloids. Ruminants generally require higher concentrations of mycotoxins in the diet when compared to monogastrics for clinical symptoms of intoxication. This happens because some mycotoxins can be partially or fully degraded by rumen microorganisms. However, ruminal fermentation does not necessarily result in inactivation of the toxin, and the extent of metabolism depends the type of mycotoxin consumed, animal species, age, sex, breed, type of diet and consequently the types of microorganisms that inhabit the rumen. In addition, some mycotoxins have antimicrobial action and can negatively alter rumen metabolism. The presence of mycotoxins in the diet can affect productive and reproductive performance, which can lead to high economic losses. Thus, cattle production systems must adopt agricultural practices that minimize the production of these metabolites.
{"title":"Micotoxinas na dieta de bovinos de corte: revisão","authors":"Marcelo Vedovatto, A. Bento, C. Kiefer, Karina Márcia Ribeiro de Souza, G. L. Franco","doi":"10.21071/az.v69i266.5119","DOIUrl":"https://doi.org/10.21071/az.v69i266.5119","url":null,"abstract":"This review was carried out with the objective of describing metabolic changes, clinical signs, methods of prevention, control and detoxification of the main mycotoxins consumed by beef cattle. After the discovery of aflatoxin and the problems that this can cause for animals and also in humans, especially cancer, scientific research has increased year after year, and today more than 18000 secondary metabolites produced by fungi are described, but the most studied are: aflatoxins, ochratoxin A, trichothecenes, zearalenone, patulin, fumonisin and Ergot alkaloids. Ruminants generally require higher concentrations of mycotoxins in the diet when compared to monogastrics for clinical symptoms of intoxication. This happens because some mycotoxins can be partially or fully degraded by rumen microorganisms. However, ruminal fermentation does not necessarily result in inactivation of the toxin, and the extent of metabolism depends the type of mycotoxin consumed, animal species, age, sex, breed, type of diet and consequently the types of microorganisms that inhabit the rumen. In addition, some mycotoxins have antimicrobial action and can negatively alter rumen metabolism. The presence of mycotoxins in the diet can affect productive and reproductive performance, which can lead to high economic losses. Thus, cattle production systems must adopt agricultural practices that minimize the production of these metabolites.","PeriodicalId":40003,"journal":{"name":"Archivos de Zootecnia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42690768","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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