Supplemental Dietary Fat and Ruminally Protected Amino Acids for Lactating Jersey Cows
نویسندگان
چکیده
منابع مشابه
In vitro and Lactation Responses in Mid-lactating Dairy Cows Fed Protected Amino Acids and Fat
The objective of this study was to evaluate the effect of ruminally protected amino acids (RPAAs) and ruminally protected fat (RPF) supplementation on ruminal fermentation characteristics (in vitro) and milk yield and milk composition (in vivo). Fourteen mid-lactating Holstein dairy cows (mean weight 653±62.59 kg) were divided into two groups according to mean milk yield and number of days of p...
متن کاملCorn distillers grains versus a blend of protein supplements with or without ruminally protected amino acids for lactating cows.
In a replicated 4 x 4 Latin square design with 4-wk periods, we used 12 multiparous Holstein cows averaging 83 d postpartum to compare corn distillers grains (CDG) versus a blend (BLEND) of other protein sources with CDG (fish meal and soybean meal), and to determine the effectiveness of ruminally protected lysine and methionine (RPLM) in improving the utilization of CDG as a protein supplement...
متن کاملEffect of ruminally-protected leucine supplement on milk yield and plasma amino acids in dairy cows
Ludmila Křížová1*, Jiří Třináctý1, Michal Richter1, Sylvie Hadrová1 and Jan Pozdíšek2 1 Research Institute for Cattle Breeding, Ltd., Rapotín, Department of Animal Nutrition Physiology, Pohořelice, Vídeňská 699, Pohořelice, 691 23, Czech Republic 2 Research Institute for Cattle Breeding, Ltd., Rapotín, Department of Feed Production and Animal Nutrition, Rapotín, Výzkumníků 267, Vikýřovice 788 1...
متن کاملEvaluation of corn distillers grains and ruminally protected lysine and methionine for lactating dairy cows.
Twelve multiparous Holstein cows averaging 57 d (36 to 77 d) postpartum at the start of the experiment were utilized in a replicated 4 x 4 Latin square design. Dietary protein supplements were 1) soybean meal, 2) soybean meal plus ruminally protected Lys and Met, 3) corn distillers grains, and 4) corn distillers grains plus ruminally protected Lys and Met. Dry matter intakes were lower for cows...
متن کاملEffects of dietary polyunsaturated fatty acids on ovarian function and prostaglandin secretion in lactating dairy cows
As lactating cows in severe negative energy balance have poor reproductive performance, the effect of dietary fat supplementation (fish oil, soybean oil) on PGFM secretion, ovarian function and blood metabolites is investigated. In this experiment, the effects of dietary polyunsaturated fatty acids on plasma metabolites, ovarian function and prostaglandin secretion of 20 primiparous Holstein co...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1994
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(94)77284-2