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Research ArticleOpen accessIn the abstractProduction and Reproduction of Primiparous Guinea Pigs Concerning Lysine LevelsYasmeen Camila Vargas-Jauja, Karin Marleny Casilla-Huallpa, Liz Beatriz Chino-Velasquez et al.The development of breeding animals is essential to ensure the productivity of guinea pigs, so an adequate supply of nutrients is required. However, information on their nutritional requirements is limited, particularly with regard to amino acids such as lysine, wich affects their productive performance. We evaluated the effects of dietary lysine levels (0.84, 1.01, 1.18, and 1.34%) on prim parous … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 2 · 28 May 2025 · 5,467 accessesView PDFCite
Research ArticleOpen accessIn the abstractOat Pellets and Hay in Alpacas of Pastures of the Andean Zone, PerúMarcial Enciso Altamirano, Jimny Núñez Delgado, Alejandrina Sotelo-Méndez et al.The research was carried out at the INIA's Quimsachata experimental center in Puno, Peru; with the purpose of evaluating oat pellets and hay in Alpaca pastures in the Andean Zone. A total of Sixty-three 15-month-old female alpacas were used to evaluate their weight gain and feed consumption. The experiment was conducted with three treatments and 21 replicates under a completely … …American Journal of Animal and Veterinary Sciences, Vol. 19, Issue 4 · 4 Mar 2025 · 5,583 accessesView PDFCite
Research ArticleOpen accessIn the abstractBiosynthesis and Evaluation of Zinc, Copper, and Methionine Feed Supplements Using Saccharomyces cerevisiae on Duck Performance in Minimal Water SystemsHendi Setiyatwan, Muhammad Rifqi IsmirajOptimizing duck performance under minimal water conditions is essential for sustainable poultry farming. Biosynthesizing essential feed supplements like Zinc (Zn), Copper (Cu), and methionine using Saccharomyces cerevisiae presents a promising method to enhance growth and meat quality. This study developed a biosynthesis method for Zn, Cu, and methionine supplements using S. cerevisiae and evaluated their effects on duck performance. In … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 1 · 11 Feb 2025 · 4,405 accessesView PDFCite
Research ArticleOpen accessIn the abstractDietary Protein and Energy Levels at 3200 m Altitude for Slow-Growing ChickensMariela Ketty Meza-Morveli, Liz Beatriz Chino-Velasquez, Jesús Camero DeLaCuba et al.The extent to which energy and protein (CP) levels can be reduced without impacting productivity in slow-growing chickens remains undetermined. The treatments were conducted to evaluate the effect of dietary CP (17.5, 19, and 20.5%) and energy (2850-2950 kcal ME/kg) on slow-growing chickens using an ideal protein concept at a high altitude (3200 m). We used a total of 144 … …American Journal of Animal and Veterinary Sciences, Vol. 19, Issue 4 · 20 Dec 2024 · 5,275 accessesView PDFCite
Research ArticleOpen accessIn the abstractIncreasing Resistance and Productivity of Broiler Chickens through ProbioticsАlpeisov Shokhan, Myktybayeva Raya, Kozhakhmetova Zubaira et al.A series of experiments were conducted at the poultry farm "Sary-Bulak" in the Almaty region in 2023. The objective was to determine the effect of a probiotic supplement, developed based on the connection of strains of lactic acid bacteria, on live weight, average daily gain, livestock safety, feed costs per unit of live weight gain, meat quality of carcasses and … …OnLine Journal of Biological Sciences, Vol. 25, Issue 1 · 7 Oct 2024 · 4,857 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
Research ArticleOpen accessIn the abstractEffect of Phytobiotic Carica Papaya Seed Extract on Growth Performance, Physiological Parameters, Gastrointestinal and Immune Organs of BroilersNovi Mayasari, Erna Ainal Mardiah, Selly Masella et al.Papaya (Carica papaya) seeds (PS) are known as a potential phytobiotic alternative to Antibiotic Growth Promotor (AGP) in poultry. Papaya seed extract (PSE) contains bioactive compounds such as carpine, chymopapain, and papain. Two hundred one-day-old Cobb strain broiler chicks were randomly allocated to five dietary treatments with four replicates per treatment, and each replicate consisted of ten birds. During the … …American Journal of Animal and Veterinary Sciences, Vol. 21, Issue 1 · 13 Apr 2026 · 1,900 accessesView PDFCite
Research ArticleOpen accessIn the abstractEstimated Breeding Values of Aberdeen-Angus Cattle BreedAnuarbek Temirbekovich Bissembayev, Alzhan Smailuly Shamshidin, Zhanat Maratovi Kasenov et al.The study aims to calculate the estimated breeding value of Aberdeen-Angus cattle using the BLUP method. The live weight of cattle of the Aberdeen-Angus breed was: At birth in bulls 28.25 kg and in heifers 27.18 kg; on day 210, at weaning in bulls 212.31 kg and in heifers 198.04 kg; on day 365, respectively, 328.02 kg and 304.73 kg. … …OnLine Journal of Biological Sciences, Vol. 23, Issue 3 · 7 Jul 2023 · 7,679 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Level of Breeding Value of Cattle of the Auliekol Breed, Calculated by the Blup MethodAnuarbek Temirbekovich Bissembayev, Alzhan Smailuly Shamshidin, Zhanat Maratovich Kasenov et al.Currently, the assessment of the breeding value of livestock provides for new approaches to determine the genetic qualities of animals that sustainably transmit to offspring. This is achieved by using the phenotypic data of the ancestors, the closest lateral relatives, as well as the animals themselves and their descendants, which, according to all canons, is facilitated by the so-called BLUP … …OnLine Journal of Biological Sciences, Vol. 23, Issue 2 · 14 Apr 2023 · 5,258 accessesView PDFCite
Research ArticleOpen accessIn the abstractEstimated Breeding Value of Kazakh White-Headed Cattle BreedAnuarbek Temirb Bissembayev, Dastanbek Asylbekovich Baimukanov, Vladimir Ivanovich Trukhachev et al.The purpose of the study is to establish the estimated breeding value index of Kazakh white-headed cattle by productive indicators. The Estimated Breeding Value (EBV) of the productive indicators of animals of the Kazakh white-headed breed was determined for 2018-2021. The index values were further interpreted as an assessment of the own genetic productivity of each evaluated animal relative to … …American Journal of Animal and Veterinary Sciences, Vol. 18, Issue 2 · 14 Apr 2023 · 6,862 accessesView PDFCite