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Showing 1 to 16 of 16 for “"Holstein Dairy Cows"”.
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Microrna involvement in hepatic adaption during the periparturient period in Holstein dairy cows
… (3 wk before calving to 3 wk after calving) dairy cows commonly experience a negative energy balance due to the increased nutrient requirements for fetal growth and milk production coupled with decreased dry matter intake (DMI). This combination can increase the risk of developing certain …
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The Relationship between Residual Feed Intake, Dry Matter Intake, and Reproductive Performance in Holstein Dairy Cows
… represents a large portion of input costs for dairy operations. Decreasing the feed consumed, measured here as dry matter intake (DMI), would therefore be advantageous to producers. However, this decrease could result in cows that do not supply the necessary energy to maintain high production, …
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The effect of feeding mixed tocopherol oil on body accumulation and immune cell functions in lactating holstein dairy cows
… with regard to maintaining lactating dairy cow health. However, information on non-α-tocopherol bioaccumulation and its effects on immune cell function is not available. A series of experiments were conducted to investigate the effect of mixed tocopherol oil supplement (Tmix; i.e. α, …
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EFFECTS OF FEEDING A COMBINATION OF SYNTHETIC ZEOLITE A AND 25 HYDROXYVITAMIN D3 DURING THE PREPARTUM PERIOD ON MINERAL METABOLISM AND LACTATION PERFORMANCE OF HOLSTEIN DAIRY COWS
Hypocalcemia during the transition period in dairy cows significantly affects health, reproduction, and milking performance. Although several effective strategies exist to regulate Ca metabolism, the interactions between Ca dynamics, inflammation, and dry matter intake remain poorly understood. …
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The Association Between Non-Esterified Fatty Acids And Beta-Hydroxybutyrate During The Transition Period In Holstein Dairy Cows And Negative Downstream Outcomes - Disease Incidence, Milk Production And Reproduction
… to 3 weeks post-partum is a challenging time for dairy cows because of both environmental and biological changes taking place in preparation for parturition and lactation. At the animal level, excessive negative energy balance (NEB) can increase the risk of developing displaced abomasa, clinical …
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Improving Feed Efficiency Through Forage Strategies for Increasing Dairy Profitability and Sustainability
… and milk production parameters when fed to cows consuming a 70% forage diet. Treatments included: 1) CONTROL diet containing 12.5 mg/cow/d of cobalt (carbonate carbonate) and 2) TEST diet being the same basal diet but including an additional 50 mg/cow/d of cobalt via a 1% Co-lactate product …
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Transcriptional adaptation of adipose tissue in dairy cows in response to energy overfeeding
… 1, 18 multiparous non-pregnant non-lactating Holstein dairy cows were fed either moderate energy diet (MoE, NEL = 1.62 Mcal/kg DM) or controlled energy diet (LoE, NEL = 1.35 Mcal/kg DM) for 8 weeks and sacrificed. Compared with LoE animals, MoE cows had markedly increased visceral adipose mass …
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Energy Balance, Immune System Function, and Susceptibility to Mastitis in Dairy Cows
… increased susceptibility to mastitis observed in dairy cows during postpartal NEB. Growing evidence indicates the glucose is the primary, if not the only, fuel source used by phagocytes during the immune response. Serum glucose concentrations were greater than those of cows experiencing postpartal …
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Nutritional Management Strategies to Increase Energy Intake of Lactating Cows
… early lactation were evaluated utilizing 71 Holstein dairy cows (34 primiparous and 3 7 multiparous) in a total lactation trial. Cows were randomly assigned at parturition to 1 of 3 dietary treatment regimes: Control (CON = 50:50 forage: concentrate (F: C) first 100 d); increased caloric …
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Escherichia coli Mastitis in the Dairy Bovine
… treatments for Escherichia coli mastitis in the dairy bovine were evaluated in two experiments. The first experiment evaluated eosin methylene blue agar as a method of distinguishing E.coli from other gram-negative mastitis pathogens. Escherichia coli will usually produce a green metallic sheen …
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Blood and liver biomarkers and transcriptome alterations during the transition period reveal beneficial effects of rumen-protected methionine supplementation on health status and performance in dairy cows
… supply of nutrients to mammary gland. Peripartal cows are likely to undergo a negative methionine (Met) balance due to increased requirements of tissues and cells for methylated compounds and Met for milk protein production. Therefore, supplementation of rumen-protected Met during the peripartal …
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Replacing Corn and Soybean Meal in Lactating Dairy Cow Diets with Field Peas (Pisum Sativum)
… with field peas (Pisum sativum L.) in lactating dairy cow diets on milk production, dry matter intake and ruminal characteristics. The experiment used 16 lactating Holstein dairy cows (nine primiparous and seven multiparous) in a 4 x 4 Latin square design with 28 d periods. Cows were blocked into …
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Grouping and feeding policies for lactating dairy cows
… analyze dry matter intake and milk production in Holstein dairy cows. Equations predicting 4% FCM and dry matter intake were derived from this data using ordinary least squares. Days in milk, available nutrients, calving date, and previous period 4% FCM accounted for 90% of the variation in 4% FCM …
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Effects of Peripartal Supplementation of Yeast-Based Products on Performance, Rumen Fermentation Profile, and Circadian Rhythms in Dairy Cows
… on performance and rumen fermentation profile in dairy cows. This study aimed to evaluate the effects of a yeast-derived postbiotic prototype (PB) on lactation performance in dairy cows supplemented during the transition period until 60 DIM. Sixty-one Holstein dairy cows were enrolled in a …
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An Evaluation of Rumen Modifiers for Lactational Performance and Nutrient Digestibility by Cows
… rumen fermentation and nutrient digestibility by cows by using <em>in vivo</em> and <em>in vitro</em> methods. The first study evaluated the lactational performance and nutrient digestibility of lactating Holstein dairy cows fed two commercial supplements: 1) a propriety blend of essential oils …