37 results for “Holstein Cow”

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Research ArticleOpen accessEvery word in the titleThe Association between Total Mixed Ration Particle Size and Fecal Scores in Holstein Lactating Dairy Cows from Florida, USAPedro Melendez, Elizabeth RoyThe objective of this study was to determine the association between the proportion of particles greater than 19 mm in a total mixed ration fed to dairy cattle and their fecal score. Over a 22 day period, random feed samples were collected twice a day from a one-side barn and assessed for particle size using the Pennsylvania State Particle Separator. … …American Journal of Animal and Veterinary Sciences, Vol. 11, Issue 1 · 6 Jan 2016 · 8,084 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleChanges in the Rumen Papillae During the Periparturient Transition in Holstein Dairy Cows are Accompanied by Changes in Abundance of Proteins Involved in Intracellular pH Regulation, But not SCFA TransportAnne Hermen Laarman, Adam Kleinberg, Michael Alexander Steele et al.The objective of this study was to examine changes in SCFA transport capacity in the rumen epithelium during the parturition transition period. Twelve pregnant, cannulated primiparous and multiparous cows were fed a standard Total Mixed Ration (TMR) for the duration of the dry period; after calving, all cows were switched to an early lactation TMR. Rumen pH, fluid and biopsies … …American Journal of Animal and Veterinary Sciences, Vol. 10, Issue 1 · 31 Mar 2015 · 7,546 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsDo Cows Under Subacute Ruminal Acidosis (SARA) Attempt to Self-Medicate?Erin Hendriksen, Ousama AlZahal, Tom C. Wright et al.The objective of this study was to examine feed-sorting behavior of dairy cows in response to a grain challenge that leads to Subacute Ruminal Acidosis (SARA). Sixteen multiparous, rumen-cannulated lactating Holstein cows were used. During the first 49 days of the experiment, all cows received a High-Forage diet (HF; 77:23, F: C; NFC=35). Cows were then transitioned to a High-Grain … …American Journal of Animal and Veterinary Sciences, Vol. 10, Issue 3 · 2 Sep 2015 · 7,571 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsEffects of Cooling and Supplemental Bovine Somatotropin on Milk Production relating to Body Glucose Metabolism and Utilization of Glucose by the Mammary Gland in Crossbred Holstein CattleSiravit Sitprija, Somchai Chanpongsang, Narongsak ChaiyabutrProblem statement: The low milk yield and shorter persistency of lactation of dairy cattle is the major problem for the dairy practices in the tropics. High environmental temperatures and rapid decline of plasma growth hormone level can influence milk production. Regulation of the milk yield of animals is mainly based on the mechanisms governing the quantity of glucose extracted by … …American Journal of Biochemistry and Biotechnology, Vol. 6, Issue 3 · 30 Sep 2010 · 7,341 accessesView PDF Cite

Research ArticleOpen accessIn the abstractIsolation and Culture of Oocytes from Dairy Cows' Ovaries for Productivity in the Southeastern Region of KazakhstanDauren Maratovich Bekenov, Batyrkhan Azimkhanovich Buralkhiev, Yusupzhan Artykovich Yuldashbayev et al.This research work aims to study methods for isolating and culturing follicular oocytes from Holstein cows in vitro. The proven complex of technologies for embryo transplantation on an industrial scale will provide a 3-5-fold acceleration of reproduction of highly productive cows. As a result of scientific research, biotechnological methods of accelerated reproduction of dairy cattle have been substantiated and introduced … …OnLine Journal of Biological Sciences, Vol. 24, Issue 4 · 14 Oct 2024 · 4,298 accessesView PDF Cite

Research ArticleOpen accessIn the abstractFeatures of Growth and Development in Heifers of Holstein and Black-and-White BreedsElena A. Babich, Berik S. Aryngaziev, Lyudmila Y. Ovchinnikova, Alexander A. OvchinnikovThe study of the characteristics of the growth and development of farm animals is of interest in breeding, as it will help to improve animal breeds, as well as serve for the organization of fast and economically rational raising of productive livestock. The research aims to study the characteristics of growth and development and indicators of reproduction of the Holstein … …OnLine Journal of Biological Sciences, Vol. 22, Issue 4 · 8 Dec 2022 · 4,776 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEffect of Mixed Mineral-Enriched Essential Oils Supplementation on Milk Production and Feed Efficiency of Lactating Dairy CowsMohammad Sofi’ul Anam, Budi Prasetyo Widyobroto, Andriyani Astuti et al.This study aimed to determine milk production and efficiency of feed utilization of a mixed mineral-enriched essential oils supplementation of lactating dairy cows. Forty-eight Holstein-Friesian cows with a 3.45±0.58 body condition score and 187.08±21.53 days in milk were randomly allocated to two dietary treatments for 46 days. Treatments consisted of no supplementation (CON) or supplementation (AGB) of 0.5% of Agromix … …American Journal of Animal and Veterinary Sciences, Vol. 17, Issue 2 · 15 Jun 2022 · 6,468 accessesView PDF Cite

Research ArticleOpen accessIn the abstractFatty 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 · 6,691 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEffect of Rumen Culture Adaptation to Origanum vulgare L. Essential Oil on Rumen Methane and FermentationMohamed G. Embaby, Mevlüt Günal, Amer AbuGhazalehThe main objective of this study was to investigate the impact of adding oregano essential oil (OEO) to adapted and unadapted rumen cultures on methane gas (CH4) production and rumen fermentation under in vitro condition. Rumen fluid for culture fermenters was collected from a Holstein cow located in Southern Illinois University farms. The adapted and unadapted rumen cultures were obtained … …American Journal of Animal and Veterinary Sciences, Vol. 14, Issue 3 · 2 Sep 2019 · 7,599 accessesView PDF Cite

InvestigationOpen accessIn the abstractThe 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 · 7,967 accessesView PDF Cite