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42 results for “Dairy Cattle”

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Research ArticleOpen accessIn the abstractA BIOPHYSIOCHEMICAL ANALYSIS OF SETTLED LIVESTOCK AND POULTRY HOUSING DUSTSCarresse Gerald, Christi McPherson, Tha’Mes McDaniel et al.The levels and composition of agricultural dusts are influenced by animal species, production strategy, housing type and ventilation efficiency. Agricultural dust within animal houses is complex and consists of feed particles, microbes and their products, dander, fecal matter, gases, metals and other organic and inorganic components. Livestock and poultry production facilities may be categorized as confinement, semi-confinement or pasture-based. Characterization … …American Journal of Agricultural and Biological Sciences, Vol. 9, Issue 2 · 16 Jan 2014 · 8,085 accessesView PDFCite
Research ArticleOpen accessIn the abstractPolymorphism of Insulin-Like Growth Factor 1 Gene in Najdi Cattle PopulationsAhmad Yazdanpanah, Khalil Mirzadeh, Morteza Mamouei et al.The Insulin-like Growth Factor 1 (IGF-1) system plays a critical endocrine role controlling nutrient metabolism in dairy cattle and it is a group of structurally-related polypeptides that regulate the growth of many types of mammalian cells. In liver, IGF-1 is dynamically regulated by lactation and energy balance. Less is known about the regulation of IGF-1 and IGF-binding protein mRNA in … …American Journal of Biochemistry and Biotechnology, Vol. 9, Issue 3 · 21 Sep 2013 · 7,157 accessesView PDFCite
Research ArticleOpen accessIn the abstractGenetic Characterization of a Bovine Breed (Tabapua) Under Artificial Selection Located in the Amazon RegionJose Elivalto Guimaraes Campelo, Marcone Helmer da Silva, Ednaldo da Silva Filho et al.Brazil currently has the biggest commercial bovine cattle population in the world. Several different breeds that come from Europe and India compose it. They are primarily used for dairy and meat production. In Brazil, several high quality genetic background cattle are kept in a condition known as pure breed, meaning no other animal of different genetic background is interbreeding with … …American Journal of Animal and Veterinary Sciences, Vol. 7, Issue 4 · 30 Jan 2013 · 7,558 accessesView PDFCite
Research ArticleOpen accessIn the abstractButyrate-Mediated Genomic Changes Involved in Non-Specific Host Defenses, Matrix Remodeling and the Immune Response in the Rumen Epithelium of Cows Afflicted with Subacute Ruminal AcidosisLouis Dionissopoulos, Anne Hermen Laarman, Ousama AlZahal et al.Subacute Ruminal Acidosis (SARA) is a disorder in cattle which can lead to chronic inflammation in the rumen epithelium, known as rumenitis. Butyrate has been shown to attenuate some of the detrimental effects of inflammatory gastroenteral disorders but the molecular mechanisms mediated by butyrate have not been defined. The objective of this study was to define the inflammatory-related genomic changes … …American Journal of Animal and Veterinary Sciences, Vol. 8, Issue 1 · 10 Jan 2013 · 8,065 accessesView PDFCite
Research ArticleOpen accessIn the abstractManagement of Data for Health Performance Measurement in the Industrialized Dairy HerdMogens Agerbo Krogh, Carsten EnevoldsenOne part of dairy herd management is to handle disease occurrence by means of health promotion, disease prevention, timely medical treatments, or eradication of disease. Supporting this part of herd management is an essential task for the cattle veterinarian. The study objective was to identify principles and tools for analysis of herd health data in industrialized dairy herds. The analysis … …American Journal of Animal and Veterinary Sciences, Vol. 7, Issue 4 · 23 Nov 2012 · 8,257 accessesView PDFCite
Research ArticleOpen accessIn the abstractAdaptation to High Grain Diets Proceeds Through Minimal Immune System Stimulation and Differences in Extracellular Matrix Protein Expression in A Model of Subacute Ruminal Acidosis in Non-lactating Dairy CowsB. W. McBride, O. AlZahal, M. A. Steele, L. DionissopoulosProblem statement: Subacute Ruminal Acidosis (SARA) is a metabolic disorder affecting approximately 20% of all dairy cattle in North America. Although the presence of SARA has been described for some time, the etiology of the disorder remains uncertain. For example, many animals diagnosed with SARA seem to remodel and adapt their epithelium to accommodate the stresses imposed by SARA, but … …American Journal of Animal and Veterinary Sciences, Vol. 7, Issue 2 · 25 Jul 2012 · 8,124 accessesView PDFCite
Research ArticleOpen accessIn the abstractFatty Acid Content of Bovine Milkfat From Raw Milk to YoghurtO. O. Santos Júnior, M. R. Pedrão, L. F. Dias et al.Problem statement: The present study aimed to study the evolution of fatty acid content, focusing on rumenic acid content, from raw milk to yoghurt processed from this milk. Approach: Milk samples were collected in a dairy plant in the northwest of Paraná State weekly in January 2011 (Brazilian summer). It processed one truck load of 26,000 L of refrigerated type-C … …American Journal of Applied Sciences, Vol. 9, Issue 8 · 7 Jul 2012 · 7,886 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffects 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 · 7,346 accessesView PDFCite
Research ArticleOpen accessIn the abstractDairy Heifer Rearing in Hot Arid Zone: An Economic AssessmentM. A. Razzaque, S. A. Mohammed, T. Al-MutawaProblem statement: Economic losses due to high mortality in young calves born in hot arid zone including Kuwait and a high cost of rearing are the main constraints to this region. Therefore, dairy producers have to depend on importation of pregnant heifers for herd replacement. Research data on cost of heifer rearing from their weaning to first lactation were lacking. … …American Journal of Applied Sciences, Vol. 7, Issue 4 · 30 Apr 2010 · 7,547 accessesView PDFCite
Research ArticleOpen accessIn the abstractImproving Performance of Replacement Heifers in Hot Arid Environment Under Intensive ManagementM. A. Razzaque, S. A. Mohammed, T. Al- Mutawa, M. BedairProblem statement: Imported Holstein Friesian dairy cattle are exposed to hot arid climate in feedlot management in Kuwait. Desert climate is extreme reaching high 45-50°C in summer and low -4ºC in winter at day and night respectively. High calf mortality, poor reproduction and milk yields were main constraints to viable dairying. The objectives of this study were to assess the … …American Journal of Animal and Veterinary Sciences, Vol. 4, Issue 4 · 31 Dec 2009 · 6,986 accessesView PDFCite