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11 articles for “Reproductive Efficiency”
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Literature ReviewOpen accessIn the keywordsPhenotypic, 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 abstractGenomic 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 accessIn the abstractThe Use of Management and Hormonal Oestrous Synchronisation on Indigenous Sheep Reared ExtensivelyAyanda Maqhashu, Jabulani Nkululeko Ngcobo, Hester Adri O'Neill et al.As the global population increases, demand for animal products will result in increased livestock-related greenhouse gas emissions that contribute to climate change. One of the strategies for reducing this impact would be the improvement of indigenous livestock reproductive efficiency that are hardy and well adapted to harsh environmental regions. The use of reproductive technologies increases efficiency of animals necessary for … …American Journal of Animal and Veterinary Sciences, Vol. 19, Issue 3 · 29 Aug 2024 · 4,778 accessesView PDFCite
Research ArticleOpen accessIn the abstractReproductive Indicators of the Alatau Cattle Breed of Kazakhstan PopulationAidar Dastanbekuly Baimukanov, Anuarbek Temirbekovich Bissembayev, Yusupzhan Artykovich Yuldashbayev et al.The research aims to study the reproductive indicators and dairy productivity of the modern Kazakhstan population of the Alatau cattle breed. The average duration of the dry period is within the physiological norm, being 60-75 days. As noted above, an increase in the service period can negatively affect herd reproduction. In this regard, some measures were taken to normalize the … …OnLine Journal of Biological Sciences, Vol. 24, Issue 1 · 5 Nov 2023 · 5,245 accessesView PDFCite
Research ArticleOpen accessIn the abstractDietary Inclusion of Sunflower Seed Alters Blood Plasma and Endometrium Lipid Profile in Beef CowsMariângela Bueno Cordeiro Maldonado, Ricardo de Oliveira Rodrigues, Dante Pazzanese Duarte Lanna et al.Polyunsaturated Fatty Acids (PUFA)-enriched diets are recognized as a significant approach for improving the reproductive efficiency of cattle. The aim of this study was to evaluate the effects of sunflower seed, a PUFA-rich feed source, supplementation on plasma and endometrium lipid profiles in beef cattle. It was hypothesized that feeding of sunflower seed has an additional effect on PUFA that … …American Journal of Animal and Veterinary Sciences, Vol. 18, Issue 2 · 25 Jul 2023 · 5,547 accessesView PDFCite
Review ArticleOpen accessIn the abstractManaging Internal Parasites of Small Ruminants using Medicinal Plants a Review on Alternative Remedies, Efficacy Evaluation Techniques and Conservational StrategiesWandile Nikelo, Maliviwe Mpayipheli, Lyndy McGawThroughout the world, internal parasites are a majorhindrance to small ruminant production. The most common internal parasites ingrazing small ruminants are likely to be gastrointestinal nematodes. They causea reduction in live-weight gain, wool growth, poor reproductive performance,and increased production costs and thus hamper global food security.Pharmaceutical control continues to be the main measure used to manage orcontrol internal parasites, however … …American Journal of Animal and Veterinary Sciences, Vol. 17, Issue 4 · 6 Oct 2022 · 6,847 accessesView PDFCite
Research ArticleOpen accessIn the abstractRelationship of Longevity with Productive and Reproductive Variables in Nelore Cows of the Bolivian TropicIkeda Atsuko, Barbona Ivana, Yoichiro Hayashi et al.The objective of this study was to evaluate the relationship between longevity with productive and reproductive efficiency variables of Nelore cows in grazing systems in the Bolivian tropics. Retrospective data corresponding to the period 1992-2019, belonging to the Cooperativa Agropecuaria Integral San Juan de Yapacaní and the Foundation Technology Center on Agriculture and Livestock, Santa Cruz-Bolivia were used. The data … …American Journal of Animal and Veterinary Sciences, Vol. 15, Issue 4 · 2 Dec 2020 · 6,626 accessesView PDFCite
Research ArticleOpen accessIn the abstractUltrasound Imaging of the Testes and Accessory Sex Glands in Male Goat Treated with GnRH During Non-Breeding SeasonHamed T. Elbaz, Emad M. Abdel Razek, Ahmed DawodThe aim of the present study was to determine the effect of GnRH on the measurements of testes, accessory sex glands and testosterone hormonal concentrations during the non-breeding season. Eight mature healthy Egyptian Baladi male goat injected with Buserelin acetate (GnRH analogue) 8μg once weekly for one month. Ultrasonographic measurements of the scrotum and its contents and all accessory sex … …American Journal of Animal and Veterinary Sciences, Vol. 14, Issue 2 · 15 Apr 2019 · 7,838 accessesView PDFCite
Research NotesOpen accessIn the abstractOvarian Follicular Dynamics in Caqueteño Creole Cattle Breed at the Colombian Amazon PiedmontLópez-Rojas Robinson, Celis-Parra Gustavo, Tovar-Claros Gilberto et al.Caqueteño creole cattle breed is part of the eight Colombian creole cattle breeds. These breeds are characterized by having great adaptive potential to the environmental conditions in which they are found and allowing them greater productive efficiency. Caqueteño creole cattle is a breed in danger of extinction according to parameters referenced by FAO, since it is a population of cattle … …American Journal of Animal and Veterinary Sciences, Vol. 14, Issue 2 · 3 May 2019 · 8,508 accessesView PDFCite
EditorialOpen accessIn the abstractThe Timeless Contribution of Rootstocks towards Successful Horticultural Farming: From Ancient Times to the Climate Change EraIoannis E. PapadakisGrafting is a horticultural practice by which living vegetative plant organs (root, stem and/or buds) of either the same genotype or, usually, different genotypes belonging to the same species, genus, subfamily and/or family, are tightly connected to each other to form a double-compound plant. In fact, it is a method of asexual (clonal-vegetative) propagation of plants. The basal part of … …American Journal of Agricultural and Biological Sciences, Vol. 11, Issue 4 · 16 Dec 2016 · 9,521 accessesView PDFCite