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Research ArticleOpen accessIn the keywordsAssessment of Breeding Qualities of Kazakh White-Headed Bulls by Testing Their ProductivityAruzhan Nugmanova, Aliya Akhmetaliyeva, Yedige Nassambayev et al.The purpose of the study was to quantify the breeding qualities of Kazakh White-Headed bulls by assessing their productivity metrics. The primary objectives were to analyze live weight dynamics, daily growth rates, feed conversion efficiency, and morphological meat quality and to employ "A" complex indices for evaluating the breeding potential. The study observed bulls aged 8-15 months at the Khafiza … …American Journal of Animal and Veterinary Sciences, Vol. 19, Issue 3 · 26 Jul 2024 · 5,407 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEffectiveness of the Use of Genetic Markers of Meat Productivity in the Kazakh White-Headed Breed Identified Using Genome-Wide Association StudyIndira Beishova, Askar Nametov, Alzhan Shamshidin et al.The study aimed to determine the effectiveness of the use of genetic markers in cattle of the Kazakh white-headed breed identified using a genome-wide association study. The object of the study was the livestock of 790 Kazakh white-headed bulls bred in breeding farms of the Republic of Kazakhstan. The study adheres to rigorous ethical standards, with all procedures approved by … …OnLine Journal of Biological Sciences, Vol. 24, Issue 4 · 25 Jun 2024 · 5,023 accessesView PDFCite
Research ArticleOpen accessIn the keywordsCow Efficiency, Relative-Birth Weight and Subsequent Pre-Weaning Growth Performance of Nguni CattleTakalani Judas Mpofu, Khathutshelo Agree Nephawe, Muzi Mandla Ginindza et al.The objective of this study was to evaluate factors influencing Cow Efficiency (CE), Relative-Birth Weight (R-BW), and subsequent pre-weaning growth performance of Nguni cattle in Limpopo Province, South Africa. Factors that were considered were dammed weight at calving, agro-ecological zone, the season of birth, sex of calves, parity, and dam age. Data from Nguni cows and their calves (n = … …American Journal of Animal and Veterinary Sciences, Vol. 17, Issue 2 · 23 May 2022 · 7,141 accessesView PDFCite
Research ArticleOpen accessIn the keywordsDetection of Polymorphism at the Insulin Like Growth Factor-I Gene in Mazandaran Native Chicken using Polymerase Chain Reaction-Restriction Fragment Length Polymorphism MethodHossein Ali Abbasi, Mohsen KazemiProblem statement: Molecular genetics selection on individual genes is a promising method to genetically improve economically important traits in chickens. The Insulin like Growth Factor-I (IGF1) gene may play important roles in growth of multiple tissues, including muscle cells, cartilage and bone. Approach: In the present study polymorphism of the promoter and 5' untranslated region of IGF-1 gene of Mazandaran … …American Journal of Animal and Veterinary Sciences, Vol. 6, Issue 2 · 8 Aug 2011 · 7,627 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffects of Palm Kernel Cake Based Biosupplement Biscuits on Nutrient Utilization, Growth Performance, and Metabolic Responses in Male Ettawah GoatsTintin Rostini, Suharlina, Achmad Jaelani et al.Palm Kernel Cake (PKC), a major by-product of the palm oil industry, has considerable potential as an alternative feed ingredient for ruminants because of its wide availability, moderate protein content, and economic value. However, its utilization is often constrained by high fiber and lignocellulosic components that may limit nutrient digestibility. This study evaluated the effects of PKC-based biosupplement biscuits as … …American Journal of Animal and Veterinary Sciences, Vol. 21, Issue 3 · 22 Oct 2026 · 312 accessesView PDFCite
Research ArticleOpen accessIn the abstractMeta Analysis of Growth Performance of Broilers in Response to Dietary Cassava Leaf Meal InterventionChristian Anayo Mbajiorgu, Ifeanyi Princewill OgbuewuThe use of Cassava Leaf Meal (CLM) in broiler diets has gained attention due to its high crude protein content (24-35%) and other valuable nutrients. Therefore, the objective of this meta-analysis was to assess the impact of diets with and without CLM on broiler growth performance. Search performed on four bibliographic databases produced 584 articles of which 11 were used … …American Journal of Animal and Veterinary Sciences, Vol. 21, Issue 3 · 30 Sep 2026 · 578 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Effect of Early Weaning on Performance, Health Parameters, and Carcass Traits of Bonsmara Bull Calves Under Feedlot ConditionsKgotso Patrick Matli, Thobela Louis Tyasi, Pieter FourieA feedlot is an intensive farming system used for finishing livestock. This study analyzed the performance, health, and carcass traits of Early-Weaned Calves (EWC) and Traditionally-Weaned Calves (TWC). A total of 285 Bonsmara bull calves were grouped into two weaning strategies, with 136 EWC (255±27.30 kg) and 149 TWC (308±24.60 kg). Backgrounding was followed by a finishing phase, with a … …American Journal of Animal and Veterinary Sciences, Vol. 21, Issue 2 · 14 Aug 2026 · 1,233 accessesView PDFCite
Research ArticleOpen accessIn the abstractPerformance of Stocker Cattle Managed On Pastures Over-Seeded With Annual ForagesMichael Martinez, Daniela Brown, Sidney Garrison et al.The goal of this study was to determine the performance of stocker calves managed on permanent pastures over-seeded with winter and summer annuals. Twenty-one 7-month-old Angus calves (BW = 263 ± 24 kg) sourced from the university farm, were randomly assigned to three treatments. The treatments were: i) Grass Hay Only (GHO; Control; 5 calves), ii) Permanent Pasture Only (PPO; … …American Journal of Animal and Veterinary Sciences, Vol. 21, Issue 2 · 5 Aug 2026 · 889 accessesView PDFCite
Review ArticleOpen accessIn the abstractEfficiency and Sustainability of Alternative Protein Sources for Livestock Production in Sub-Saharan Africa: A Systematic Review and Meta-AnalysisOlusegun Oyebade Ikusika, Bulo Luvuyo, Jaja Ishmeal FestusSub-Saharan Africa (SSA) faces growing challenges in sustainable livestock production due to high costs and limited availability of conventional protein sources such as soybean meal and fishmeal. This systematic review and meta-analysis evaluated the nutritional efficiency and sustainability of locally available alternative protein sources for livestock feed in SSA. Following PRISMA guidelines, systematic searches were conducted across five databases (PubMed, … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 4 · 19 Feb 2026 · 1,844 accessesView PDFCite
Research ArticleOpen accessIn the abstractGrowth Dynamics and Meat Productivity of the Kushum Horse BreedOtebayev Zhassulan, Akimbekov Amin, Alpeisov Shokhan et al.In the conditions of the south-eastern zone of the Almaty region under herd management conditions without altering the existing husbandry practices the meat productivity of Kushum breed of horses is increased in the Bayserke Agro Farm due to breeding of highly productive stallions and mares of the Kushum breed. The primary objective of this study is to assess the productivity, … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 3 · 4 Dec 2025 · 2,743 accessesView PDFCite