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142 articles for “Cow”
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Research ArticleOpen accessEvery word in the titleBreeding Qualities of Aberdeen-Angus Cows of Different Genotypes in Northern KazakhstanPavel Shevchenko, Raushan Rychshanova, Kulyay Suleimanova et al.The Aberdeen-Angus breed of cattle is widely used to increase the number of breeding cores and beef production volumes and improve its quality in the Republic of Kazakhstan. The purpose of the research is to study the breeding and adaptive qualities of Aberdeen-Angus cattle in the conditions of the Kostanay region (Northern region of the Republic of Kazakhstan). To achieve … …American Journal of Animal and Veterinary Sciences, Vol. 18, Issue 3 · 18 Sep 2023 · 5,570 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDietary 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 · 5,551 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleMarking of Genetic Resistance to Chlamydia, Brucellosis and Mastitis in Holstein Cows by Using Polymorphic Variants of LTF, MBL1 and TLR9 GenesIndira Beishova, Birzhan Nurgaliyev, Alena Belaya et al.The purpose of the research is to study the association of polymorphic variants of the Toll-Like Receptor 9 (TLR9), Mannose-Binding Lectin 1 (MBL1), and Lactoferrin (LTF) genes with the incidence of chlamydia, brucellosis and mastitis in Holstein cows. Samples of Holstein cows with established diagnoses of chlamydia, brucellosis, and mastitis were characterized by the nature of the correspondence of the … …American Journal of Animal and Veterinary Sciences, Vol. 18, Issue 2 · 6 May 2023 · 6,161 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Semen on the Embryo Productivity of Donor Cows and the Development of Transplant CalvesBolatbek Ateikhan, Toktar Karibaevich Bexeitov, Talgat Kozybakovich Seiteuov et al.In animal husbandry, more heifers are requiredfor the expanded reproduction of the herd or milk, and more bulls are needed toobtain meat. One of the effective ways to artificially regulate the secondary(at birth) sex ratio is the technology of sexed semen. In this connection, thepurpose of this study was to study the effect of sexed and native semen on theembryonic … …OnLine Journal of Biological Sciences, Vol. 22, Issue 3 · 6 Sep 2022 · 5,435 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleSuperovulation Response and Embryo Quality Recovered Following Flushing Nguni Heifers and CowsAyanda Maqhashu, Masindi L. Mphaphathi, Pokgedi J Sebei et al.The aims of the study were to compare super ovulatory response, fertilization rate and evaluate embryo quality recovered from super ovulated Nguni stud cows and heifers. Nguni cows (n = 15) and heifers (n = 10) aged 4-6 and 2 years, respectively, were used as embryo donors. Embryo donors were synchronized for estrus before superovulation. For superovulation donors were administered … …American Journal of Animal and Veterinary Sciences, Vol. 16, Issue 4 · 25 Nov 2021 · 6,433 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleMorphology and Histochemistry of the Corpus Luteum (CL) of Ovaries of Pregnant and Infertile CowsEvgeny Skovorodin, Svetlana Bogolyuk, George Bazekin et al.The purpose of our study is to study the functional morphology of the Corpus Luteum (CL) of the ovaries of pregnant and infertile cows in normal and pathological conditions. For that purpose, the ovaries of cows were examined after slaughter, histological and histochemical examination of the CL was carried out. For the antemortem examination of the ovary, the biopsy method … …American Journal of Animal and Veterinary Sciences, Vol. 15, Issue 4 · 23 Oct 2020 · 6,617 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFatty Acid Profile in Butter from Cows Fed with Sunflower Seeds with or Without LignosulfonateWallacy Barbacena Rosa dos Santos, Geraldo Tadeu dos Santos, Daniele Cristina da Silva Kazama et al.The objective of this study was to evaluate the fatty acid composition of butter from Holstein cows fed diets containing ground sunflower seeds or ground and pelleted sunflower seeds, with or without the addition of lignosulfonate. The butter was produced from milk collected from eight Holstein cows multiparous, with 100±62.6 days in milk, with a mean weight of 556±39.8 kg … …American Journal of Animal and Veterinary Sciences, Vol. 15, Issue 2 · 17 Jun 2020 · 6,693 accessesView PDFCite
InvestigationOpen accessEvery word in the titleThe Level of Milk Production, Depending on the Exterior Traits of Dairy CowsLyudmila Vasilevna Alimzhanova, Saule Kuanyshpekovna Bostanova, Yuliya Nikolayevna Sheiko et al.This article presents the results of the evaluation of the exterior of the Holstein black-and-white and Simmental breeds by the linear method, the dairy productivity of animals has been studied, the relationship between the studied traits of the exterior and the productivity of animals has been determined. The linear evaluation of the first-calves of the Holstein breed in all traits … …OnLine Journal of Biological Sciences, Vol. 18, Issue 1 · 1 Jan 2018 · 7,970 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleSerum Ornithine Carbamoyltransferase Activity and Correlation with Fatty Liver in Dairy Cows with Displaced AbomasumKen Onda, Reiichiro Sato, Yosuke Sasaki et al.Ornithine Carbamoyltransferase (OCT) is a hepatocyte-specific enzyme; elevated serum activity indicates liver damage. Displaced abomasum frequently occurs around the time of parturition in dairy cattle and is associated with fatty liver. We analyzed serum OCT activities to investigate the relationship between displaced abomasum and fatty liver. Lactating Holstein cows, 75 clinically healthy and 22 with displaced abomasum, were used. Serum … …American Journal of Animal and Veterinary Sciences, Vol. 11, Issue 3 · 13 Jul 2016 · 7,662 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Inclusion of Albizia saman Pods in the Diet on the Performances of Dairy CowsMin Aung, Yin Yin Kyawt, Moe Thida Htun et al.Ruminants can achieve high productivity when the diet includes concentrates; however these are often expensive due to competition with humans and mono-gastric animals. This experiment was conducted to determine the effect of partial inclusion of Albizia saman pods (ASP) in a Commercial Concentrate (CC) on the performances of dairy cows. Twelve cross-bred Holstein Friesian cows (472±13 kg) in the 12th … …American Journal of Animal and Veterinary Sciences, Vol. 11, Issue 1 · 29 Dec 2015 · 7,587 accessesView PDFCite