Journal of Livestock Science最新文献

Molecular evidences of mutation-drift equilibrium in Punganur breed of cattle 蓬加努尔牛种变异-漂移平衡的分子证据

Journal of Livestock Science Pub Date : 2024-05-07 DOI: 10.33259/jlivestsci.2024.174-180

U. Vinod, B. Punyakumari, G. Sushma, Cherryl D.M.

{"title":"Molecular evidences of mutation-drift equilibrium in Punganur breed of cattle","authors":"U. Vinod, B. Punyakumari, G. Sushma, Cherryl D.M.","doi":"10.33259/jlivestsci.2024.174-180","DOIUrl":"https://doi.org/10.33259/jlivestsci.2024.174-180","url":null,"abstract":"To evaluate Punganur cattle for mutation drift equilibrium, three tests were performed under three different mutation models, viz., infinite allele model (IAM), stepwise mutation model (SMM) and two-phase model (TPM). The observed gene diversity (He) and expected equilibrium gene diversity (Heq) were estimated under different models of microsatellite evolution. All the 20 loci were found to exhibit gene diversity excess under IAM and TPM, while 19 loci were having gene diversity excess under SMM. All the three statistical tests, viz., sign test, standardized differences test, and Wilcoxon sign rank test, revealed significant (P<0.01) deviation of Punganur cattle population from mutation-drift equilibrium under all the three models of mutation. Furthermore, the qualitative test of allele frequency distribution in Punganur cattle population revealed a strong mode shift from the normal L shaped form suggesting that the population had experienced genetic bottleneck in the recent past. The occurrence of genetic bottleneck might have led to the loss of several rare alleles in the population, which point towards the need for efforts to conserve this important cattle germplasm.","PeriodicalId":351246,"journal":{"name":"Journal of Livestock Science","volume":"52 s181","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141002399","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}

引用次数: 0

On-farm phenotypic characterization of indigenous chicken populations and their productive and reproductive performances in central Ethiopia 埃塞俄比亚中部土著鸡群的农场表型特征及其生产和繁殖性能

Journal of Livestock Science Pub Date : 2024-05-07 DOI: 10.33259/jlivestsci.2024.181-189

D. Tadese, B. Bekele, D. Hailemesikel, B. Wolde, W. Esatu, T. Dessie

{"title":"On-farm phenotypic characterization of indigenous chicken populations and their productive and reproductive performances in central Ethiopia","authors":"D. Tadese, B. Bekele, D. Hailemesikel, B. Wolde, W. Esatu, T. Dessie","doi":"10.33259/jlivestsci.2024.181-189","DOIUrl":"https://doi.org/10.33259/jlivestsci.2024.181-189","url":null,"abstract":"This study was conducted in Gibe and Ameka districts of Hadiya Zone to characterize and describe indigenous chicken populations and their production systems and, to determine the productive and reproductive performance of indigenous chicken populations. A total of 351 respondents from purposively identified districts were randomized to gather the information through semi-structured questionnaires. Phenotypic data were collected from a total of 224 (33 male and 191 female) matured indigenous chickens. The morphometric traits recorded were body weight, body length, breast circumference, wingspan, shank length, shank circumference, comb length, wattle length, earlobe length and beak length. Among the analyzed morphometric traits, the significant (p<0.05) difference in districts for both sexes of chickens was only body weight, but female chickens significantly (p<0.05) different for breast circumference, shank length, shank circumference, wattle length, wing span and comb length in the studied districts. Others analyzed phenotypic trait were comb type, plumage color, ear lope color, feather morphology and distribution, spurs, shank color, feather on shark, plumage pattern, eye color and skin color. The results showed that mean flock size of the study area was 9.63 chicken/household of which 44, 14, 12, 6 and 14% of the total indigenous chicken population structure were chicks, pullets, cockerels, cocks and hens chicken respectively. Reproductive traits showed significant difference (p<0.05) between Gibe and Ameka districts. Disease, lack of knowledge, predators and feed were the major chicken production constraints in studied area area. The variations in chickens for different sites and sexes considered as opportunities for selection and genetic improvement of indigenous chicken. .","PeriodicalId":351246,"journal":{"name":"Journal of Livestock Science","volume":"70 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141002906","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}

引用次数: 0

Opportunities and strategies to achieve potential growth of fish farming in North-East Bangladesh 实现孟加拉国东北部养鱼业潜在增长的机遇和战略

Journal of Livestock Science Pub Date : 2024-04-15 DOI: 10.33259/jlivestsci.2024.125-135

Md. A A M Hridoy, D. Adikari, F. Shahriar, Md. Abu Kawsar

引用次数: 0

Genetic polymorphisms of kappa-casein (CSN3) gene and its association with bovine milk properties 卡帕酪蛋白（CSN3）基因的遗传多态性及其与牛乳特性的关系

Journal of Livestock Science Pub Date : 2024-04-15 DOI: 10.33259/jlivestsci.2024.150-159

M.S.M. Sharaz, M.S.K. Rabindrakumar

引用次数: 0

Issues faced by poultry farmers in post-covid scenario 禽流感后家禽养殖户面临的问题

Journal of Livestock Science Pub Date : 2024-04-15 DOI: 10.33259/jlivestsci.2024.136-140

S. Poojitha, K. Anusha, P. R. Raju

引用次数: 0

Moringa oliefera leaf as potential, alternative protein source for livestock 作为牲畜潜在替代蛋白质来源的辣木叶

Journal of Livestock Science Pub Date : 2024-04-15 DOI: 10.33259/jlivestsci.2024.141-149

L. Borah, S. Haloi

引用次数: 0

Breeding objectives and farmers’ perceptions for indigenous chicken ecotypes in Southern Ethiopia 埃塞俄比亚南部土鸡生态型的育种目标和农民的看法

Journal of Livestock Science Pub Date : 2024-04-08 DOI: 10.33259/jlivestsci.2024.95-101

B. Bekele, W. Esatu, T. Dessie

{"title":"Breeding objectives and farmers’ perceptions for indigenous chicken ecotypes in Southern Ethiopia","authors":"B. Bekele, W. Esatu, T. Dessie","doi":"10.33259/jlivestsci.2024.95-101","DOIUrl":"https://doi.org/10.33259/jlivestsci.2024.95-101","url":null,"abstract":"The aim of the study was to identify the breeding objectives and selection criteria of farmers for indigenous chickens in southern region of Ethiopia. Data were subjected to GLM procedures of Statistical Analysis System (SAS 2012, ver. 9.4) by fitting zones as independent variable to analyze the chicken population composition. Moreover, ranking analyses were used for computing data on breeding objective and selection criteria of indigenous chicken. Indexes were used to calculate data collected from rankings using weighed averages. Hens and chicks showed significantly (p<0.05) higher in number for Wolaita; however, the number of cockerels is significantly (p<0.05) higher in Hadiya followed by Wolaita zone. The results of this study suggested that farmers have different breeding objectives for their chicken. Across all the three studied zones, egg production was ranked first; however, rearing chickens for the cultural purpose is documented as less across all the three studied zones of the southern Ethiopia. The selection criteria used for selection of breeding hen; egg number, plumage color, hatchability, broodiness and egg size were the traits of highest importance for selection purpose with an index values of 0.365, 0.129, 0.129, 0.120 and 0.102 respectively. The highest selection criteria used to select breeding cock were body size, growth rate, plumage color and comb type. Development of a breeding programs for improvement of indigenous chicken strains should focus on the traits prioritized by farmers because of breeding goals developed without considering the needs of all the stakeholders have high chances of failerity by end users.","PeriodicalId":351246,"journal":{"name":"Journal of Livestock Science","volume":"173 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140730928","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}

引用次数: 0

Strengths, Weaknesses, Opportunities and Threats of Pasturelands in Terai Region of Nepal 尼泊尔德赖地区牧场的优势、劣势、机遇和威胁

Journal of Livestock Science Pub Date : 2024-04-08 DOI: 10.33259/jlivestsci.2024.86-94

M. Pokhare, R. Ghimire

引用次数: 0

Oxidative stress and NRF2 gene expression in blood of indigenous pigs 土著猪血液中的氧化应激和 NRF2 基因表达

Journal of Livestock Science Pub Date : 2024-04-08 DOI: 10.33259/jlivestsci.2024.111-119

V.V. Nachare, G.S. Sonawane, S.N. Jadhav, A.Y. Doiphode, T.C. Shende, R.R. Shelar, V.G. Nimbalkar, S. M. Bhokre

{"title":"Oxidative stress and NRF2 gene expression in blood of indigenous pigs","authors":"V.V. Nachare, G.S. Sonawane, S.N. Jadhav, A.Y. Doiphode, T.C. Shende, R.R. Shelar, V.G. Nimbalkar, S. M. Bhokre","doi":"10.33259/jlivestsci.2024.111-119","DOIUrl":"https://doi.org/10.33259/jlivestsci.2024.111-119","url":null,"abstract":"The present study examined the variability of oxidative stress levels and NRF2 gene expression between blood samples of piglet and adult pigs of indigenous origin. Among various stressors, higher oxidative stress is one of the most important factors associated with multiple health and managemental problems commonly observed in piglets. NRF2 is a key regulator of transcriptional activation of antioxidant response genes and oxidative stress. Therefore, the present research work was conducted to study NRF2 gene expression in blood samples of indigenous piglets (N=8) and adult pigs (N=8) using de novo synthesized primers specific to Sus Scrofa species. Further, lipid peroxidation levels in RBC hemolysate samples were compared between piglets and adult pigs by measuring Malondialdehyde levels by thiobarbituric acid reactive substance (TBARS) assay. Association of NRF2 gene expression with MDA lipid peroxidation levels in indigenous pigs were calculated by Pearson’s correlation method. In present study we found, significantly lower levels (P <0.01) of NRF2 gene expression and higher levels (P <0.01) of MDA lipid peroxidation in RBC hemolysate were present in piglets as compared to adult pigs. Further, MDA lipid peroxidation levels were found to significant (P <0.01) negative correlation with NRF2 fold gene expression levels. Low levels of NRF2 expression adversely impacting piglet’s health and makes them prone to higher oxidative stress. Present findings suggest that NRF2 gene expression levels are effective molecular markers for determining, modulating and improving the antioxidant capacity of indigenous piglets.","PeriodicalId":351246,"journal":{"name":"Journal of Livestock Science","volume":"148 S290","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140731189","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}

引用次数: 0

Factors influencing the intracytoplasmic sperm injection (ICSI) efficacy in goat and sheep 影响山羊和绵羊卵胞浆内单精子注射（ICSI）效果的因素

Journal of Livestock Science Pub Date : 2024-04-08 DOI: 10.33259/jlivestsci.2024.102-110

M.B.A. Eloriaga, L. Purnamasari, J.F. dela Cruz

{"title":"Factors influencing the intracytoplasmic sperm injection (ICSI) efficacy in goat and sheep","authors":"M.B.A. Eloriaga, L. Purnamasari, J.F. dela Cruz","doi":"10.33259/jlivestsci.2024.102-110","DOIUrl":"https://doi.org/10.33259/jlivestsci.2024.102-110","url":null,"abstract":"Intracytoplasmic sperm injection is performed by microscopically injecting a sperm cell into an egg cell's ooplasm effectively bypassing usual steps taken in natural reproduction. ICSI in goats and sheep provides opportunities for better genetic selection to improve small ruminant production potentially. It has also shown promise for wildlife conservation by preserving spermatozoa from endangered species. Different factors that affect the success rate of ICSI in sheep and goats have been categorized into external and internal factors. Reproductive seasonality suggested that oocyte harvest can be done year-round but efficient oocyte development occurs during breeding (autumn) season. Superovulation is induced in goats and sheep via administration of follicle stimulating hormone (FSH), luteinizing hormone (LH), equine chorionic gonadotropin (eCG), and pregnant mare serum gonadotropin (PMSG). Toxins accumulating around the ICSI-produced embryo such as free radicals and ammonium ions has led to embryonic arrest. Female animals cannot be juvenile nor geriatric to be able to produce viable oocytes for ICSI procedures. Donor animals with proper nutrition and ideal weight produced high quality oocytes. Boer goats were found to be polyestrous and sensitive to hormonal treatment making them the ideal breed for ICSI. Proper sourcing and management of the oocyte has greatly affected success rates of ICSI. Fresh sperm from male donor animals produced more blastocysts than frozen-thawed sperm. Frozen-thawed sperm however has shown excellent membrane integrity important for ICSI-embryo development. Immobilizing sperm by breaking the tail before ICSI has increased blastocyst yield. ICSI success rates are affected by external and internal factors responsible for sex gamete quality.","PeriodicalId":351246,"journal":{"name":"Journal of Livestock Science","volume":"128 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140731531","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}

引用次数: 0