Impact of Dietary Rumen Undegradable Protein and Rumen-Protected Choline on Intake, Peripartum Liver Triacylglyceride, Plasma Metabolites and Milk Production in Transition Dairy Cows
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چکیده
منابع مشابه
Effects of rumen-protected choline supplementation on milk production and choline supply of periparturient dairy cows.
The objective of the present study was to determine the effects of rumen-protected choline (RPC) supplementation on body condition, milk production and milk choline content during the periparturient period. Thirty-two Holstein cows were allocated into two groups (RPC group - with RPC supplementation, and control group - without RPC supplementation) 28 days before the expected calving. Cows were...
متن کاملFeeding Rumen-Protected Choline to Transition Dairy Cows
Choline [(CH3)3N+CH2CH2OH], also known as trimethyl ethanolamine, is an essential component of mammalian diets as it is required for normal function of cells. It was discovered by Andreas Strecker in 1862, but it remained unrecognized as an essential nutrient for humans until 1998, when dietary reference intakes were established. Choline was initially determined to be essential in the preventio...
متن کاملEffects of Feeding Rumen Protected Choline and Vitamin E on Milk Yield, Milk Composition, Dry Matter Intake, BodyCondition Score and Body Weight in Early Lactating Dairy Cows
Twenty four primiparous and multiparous Holstein cows on early lactation, beginning five weeks postpartum, were used for four weeks to investigate the effects of supplemention of rumen-protected choline (RPC) or vitamin E on milk yield, milk composition, dry matter intake, body condition score and body weight. The cows were randomly assigned to one of the following treatments: I)no supplement (...
متن کاملEffects of rumen-protected choline supplementation on metabolic and performance responses of transition dairy cows.
The objective of this experiment was to compare metabolic and milk production parameters in dairy cows supplemented and nonsupplemented with rumen-protected choline (RPC) during the transition period. Twenty-three nonlactating, multiparous, pregnant Holstein cows were ranked by BW and BCS 21 d before expected date of calving and immediately were assigned to receive (n = 12) or not receive (cont...
متن کاملResponses of Dairy Cows to Supplemental Highly Digestible Rumen Undegradable Protein and Rumen-protected Forms of Methionine*
Metabolizable protein (MP) supply and amino acid balance in the intestine were manipulated through selection of highly digestible rumen-undegradable protein (RUP) sources and protected methionine (Met) supplementation. Four ruminallycannulated, multiparous Holstein cows averaging 193±13 days in milk were used in a 4×4 Latin square design to assess N utilization and milk production responses to ...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 2000
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(00)75191-5