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16 results for “Sheep Breeds”
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Research ArticleOpen accessPhrase in the titleGenetic Characterization of Kazakh Native Sheep Breeds Using Mitochondrial DNAIlmira Mukhametzharova, Yessenbay Islamov, Saukymbek Shauyenov et al.In this study, we used mitochondrial (mt) DNA to reveal patterns of genetic diversity among six breeds of sheep native to Kazakhstan, including the Chu and Kalchengel types of Kazakh mutton-semifine-wool breed of sheep, Akzhayik, Edilbay, Kazakh fat-rumped semi-course-wool and South Kazakh Merino breeds. Mitochondrial DNA D-loop was studied in 64 samples to determine the genetic diversity of the local … …OnLine Journal of Biological Sciences, Vol. 18, Issue 3 · 7 Sep 2018 · 8,848 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleComparative Physiological and Molecular Study of Some Sheep Breeds in Saudi ArabiaMohammad S. AL-Harbi, Hamed S. Alwagdany, Sayed A.M. AmerNaemi, Heri, Najdi and Sawakni sheep breeds inhabiting Kingdom of Saudi Arabia were studied on both physiological and molecular bases. Native polyacrylamide gel-electrophoreses for two enzymes Malate Dehydrogenase (Mdh) and Malic Enzyme (Me) recorded 5 isoenzyme loci from which 4 were polymorphic and 1 was monomorphic. Mdh showed three fractions, the first was recorded in Sawakni and Najdi breeds, the … …American Journal of Biochemistry and Biotechnology, Vol. 9, Issue 2 · 20 Jun 2013 · 8,388 accessesView PDFCite
Review ArticleOpen accessPhrase in the titleGenomic Regions and Candidate Genes Associated With Semen Traits in Rams: A Systematic GWAS Review With Implications for South African Sheep BreedsNhlakanipho Sam Zulu, Khoboso Christine LehloenyaRam fertility is a key determinant of reproductive efficiency in sheep production systems, particularly under extensive and semi-extensive conditions prevalent in South Africa. Semen quality traits, including ejaculate volume, sperm concentration, motility, and cryotolerance, exhibit measurable genetic variation and are increasingly investigated using genomic approaches. This systematic review synthesizes evidence from three eligible Genome-Wide Association Studies (GWAS) analyses that have … …American Journal of Animal and Veterinary Sciences, Vol. 21, Issue 3 · 26 Oct 2026 · 50 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleOn-Farm Phenotypic Characterization of Sheep Breeds in BotswanaKaelo Pelotshweu, Monosi Andries Bolowe, Nicodemus Pungi Mosweu et al.Phenotypic characterization data serve as a baseline for the evaluation of the effectiveness of selection programs and the development of conservation strategies. Therefore, this study aimed to phenotypically characterize Tswana, Dorper, Damara, Meat-master, and Karakul sheep breeds in Botswana under a ranch management system. Qualitative and quantitative data was collected from 595 adult sheep (one year and above). Data on … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 1 · 1 Mar 2025 · 7,311 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleA Comparative Study on the Reproductive Performance of South African Indigenous Sheep Breeds Following Oestrus SynchronizationJabulani Nkululeko Ngcobo, Tshimangadzo Lucky Nedambale, Tlou Caswell Chokoe, Fhulufhelo Vincent RamukhithiThe aim of the study was to compare the effect of age and live body weight on the oestrus response, duration, pregnancy rate and lambing rate among South African indigenous sheep breeds (Zulu sheep = 36, Bapedi sheep = 26, Damara sheep = 10 and Namaqua Afrikaner sheep = 9). Control Intravaginal Drug Release Dispensers (CIDR’s) were inserted into the … …American Journal of Animal and Veterinary Sciences, Vol. 17, Issue 1 · 14 Jan 2022 · 7,862 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleNeosporosis in Sheep and Different Breeds of Goats from Southern Jordan: Prevalence and Risk Factors AnalysisAl-Majali A. N., Jawasreh K. I., Talafha H. A., Talafha A. Q.A cross sectional study was performed to investigate the epidemiology of Neospora caninum infection in Southern Jordan. A total of 320 sheep and 300 goats from 38 and 24, sheep and goat flocks, respectively, were randomly sampled and assayed for presence of antibodies against N. caninum. A structured pre-tested questionnaire was administered to collect information on flocks' health and management. … …American Journal of Animal and Veterinary Sciences, Vol. 3, Issue 2 · 31 Dec 2008 · 7,871 accessesView PDFCite
Literature ReviewOpen accessIn the keywordsPrediction of Body Weight from Linear Body Measurements in Sheep: A Systematic ReviewMathemba Kwezi Molosi, Lubabalo Bila, Thobela Louis TyasiThe aim of the study was to systematically review the literature on the prediction of the body weight from linear body measurement traits in sheep using four databases: Google Scholar, PubMed, Science Direct and Web of Science. The findings showed that eighteen (n = 18) articles with22% (n = 4) were from South Africa certified to be utilised in this … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 2 · 5 Jul 2025 · 3,543 accessesView PDFCite
Literature ReviewOpen accessIn the abstractPhenotypic, Reproductive and Genomic Perspectives on the Status and Research Gaps of South African Bosvelder SheepNhlakanipho Sam Zulu, Khoboso Christine Lehloenya, Khanyisile Hadebe et al.The South African Bosvelder sheep is an emerging composite sheep developed from indigenous Bapedi and commercial White Dorper and Van Rooy sheep. Despite its reported adaptability and production potential under bushveld conditions, the sheep remains scientifically under-characterized and is not formally recognized within national breeding frameworks. This narrative review evaluates the current state of knowledge regarding phenotypic, reproductive, and genomic … …American Journal of Animal and Veterinary Sciences, Vol. 21, Issue 2 · 1 Jul 2026 · 1,242 accessesView PDFCite
Review ArticleOpen accessIn the abstractInsulin-Like Growth Factor 1 Gene and Growth Traits Correlations in Sheep: A Systematic ReviewThabang Sako, Thobela Lousi Tyasi, Jones Ng’ambiAbousoliman, I., Reyer, H., Oster, M., Muráni, E., Mourad, M., Abdel-Salam Rashed, M., Mohamed, I., & Wimmers, K. (2020). Analysis of Candidate Genes for Growth and Milk Performance Traits in the Egyptian Barki Sheep. Animals, 10(2), 197. https://doi.org/10.3390/ani10020197 Al Qasimi, R., Hassan, A., & Khudair, B. Y. (2019). Effect of IGF-1 and GH Genes Polymorphism on Weights and Body Measurements … …American Journal of Animal and Veterinary Sciences, Vol. 19, Issue 2 · 25 May 2024 · 5,755 accessesView PDFCite
Review ArticleOpen accessIn the abstractPopulation, World Production and Quality of Sheep and Goat ProductsMitra Mazinani, Brian RudeSheep and goats are two of the first animals that were domesticated by humans. The initial reasons for raising these animals was meat, milk and dairy products, fleece and skin. Also, one of the most important reasons for raising sheep and, goats on the farm was due to the difficulties associated with preserving animal products like meat. It was easier … …American Journal of Animal and Veterinary Sciences, Vol. 15, Issue 4 · 26 Nov 2020 · 18,231 accessesView PDFCite