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62 results for “Dairy Cow”
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Research ArticleOpen accessPhrase in the titleNUTRITIONAL CHARACTERISTICS OF THE DAIRY COW DURING EARLY GESTATION AND SUBSEQUENT GROWTH AND CARDIAC MEASUREMENTS OF HER OFFSPRINGJ. E. Larson, B. E. Voelz, D. K. Hardin, C. O. LemleyThe objective was to determine whether maternal nutritional status and milk production during early gestation influenced or were correlated with parameters of the calf at birth and at 1 month of age. From parturition until 90 days pregnant, blood samples were collected every 14 days in dairy cows and plasma was assayed for concentrations of glucose and β-Hydroxybutyrate (BHBA). Calves … …American Journal of Animal and Veterinary Sciences, Vol. 9, Issue 3 · 15 Sep 2014 · 7,629 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleTRANSCRIPTOMIC CHANGES IN RUMINAL TISSUE INDUCED BY THE PERIPARTURIENT TRANSITION IN DAIRY COWSLouis Dionissopoulos, Ousama AlZahal, Michael Alexander Steele et al.To understand how the capacity for fat metabolism (uptake, synthesis, modification) changes in rumen epithelia immediately before and after onset of lactation in dairy cows, rumen fluid Short Chain Fatty Acid (SCFA) concentrations and mRNA expression profiles of rumen epithelia was determined in twelve Holstein dairy cows at three weeks prior to calving (wk -3, n = 12), one week … …American Journal of Animal and Veterinary Sciences, Vol. 9, Issue 1 · 13 Jan 2014 · 7,505 accessesView PDFCite
Research ArticleOpen accessPhrase in the titlePathomorphological Findings of White Line Disease with Digital and Inner Organ Infections in Culling Dairy CowsMohsen Nouri, Iradj Nowrouzian, Seyyed Hossein Marjanmehr et al.The aim of this study was to investigate pathomorphological findings of white line disease in culling lame cows, with special reference to the lesions and their distribution. The most prominent pathomorphologic findings of the claw with white line disease included extensor process entheseophyte (75.0%), flexor tuberisity entheseophyte (37.5%) and abaxial margin bone absorption (68.7%). Six out of the total of … …American Journal of Animal and Veterinary Sciences, Vol. 8, Issue 3 · 30 Aug 2013 · 7,260 accessesView PDFCite
Research ArticleOpen accessPhrase in the titlePrevalence and Distribution of Mastitis Pathogens and their Resistance against Antimicrobial Agents in Dairy Cows in JordanAzmi D. Hawari, Fawzi Al-DabbasThe primary objective of this study was to determine the aetiology of bovine mastitis in ten herds of Holstein Friesian cow in Jordan, the prevalence of mastitis pathogens in dairy cows and their resistance to selected antimicrobial agents. Milk samples were collected from 220 lactating cows to determine the clinical and subclinical mastitis by white side test and confirmed by … …American Journal of Animal and Veterinary Sciences, Vol. 3, Issue 1 · 31 Mar 2008 · 7,681 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleSupplementation of Prill Fat Derived from Palm Oil on Nutrient Digestibility and Dairy Cow PerformanceLolita Udin Riestanti, Despal, Yuli RetnaniPrill fat is a hydrogenated vegetable oil which contains more than 85% palmitic acid with a high melting point. Due to this reason, it does not melt at rumen temperature and bypass rumen degradation. This study was aimed to determine the optimum level of prill fat (86% palmitic acid) supplementation in dairy ration on fermentation characteristics, feed digestibility, milk production, … …American Journal of Animal and Veterinary Sciences, Vol. 16, Issue 2 · 1 Jul 2021 · 8,756 accessesView PDFCite
Research ArticleOpen accessPhrase 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 · 8,091 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleAdaptation 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 accessPhrase 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 · 7,554 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleButyrate Supplementation Affects Mrna Abundance of Genes Involved in Glycolysis, Oxidative Phosphorylation and Lipogenesis in the Rumen Epithelium of Holstein Dairy CowsAnne Hermen Laarman, Louis Dionissopoulos, Ousama AlZahal et al.Energy availability in epithelial cells is a crucial link for maintaining epithelial barrier integrity; energy depletion is linked to impaired barrier function in several epithelia. This study aimed to elucidate the effects of exogenous butyrate on mRNA abundance of genes indirectly involved in rumen epithelial barrier integrity. Sixteen mid-lactation Holstein cows fed a total mixed ration received a concentrate mix … …American Journal of Animal and Veterinary Sciences, Vol. 8, Issue 4 · 27 Nov 2013 · 7,525 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleButyrate and Subacute Ruminal Acidosis Affect Abundance of Membrane Proteins Involved with Proton and Short Chain Fatty Acid Transport in the Rumen Epithelium of Dairy CowsAnne Hermen Laarman, Louis Dionissopoulos, Ousama AlZahal et al.The objective of this study was to elucidate the effects of butyrate on the Short Chain Fatty Acids (SCFA) membrane transport proteins and proton membrane transport proteins in the rumen epithelium. Sixteen mid-lactation cows were fed a 44% Non-Fibre Carbohydrate (NFC) diet and divided into a control treatment and a butyrate treatment. For 7 days, the cows on the control … …American Journal of Animal and Veterinary Sciences, Vol. 8, Issue 4 · 27 Nov 2013 · 7,480 accessesView PDFCite