Effects of lysine or ruminally protected lysine administration on nitrogen utilization in goat fed a diet supplemented with ruminally protected methionine
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منابع مشابه
Determination of Intestinal Disappearance of Lysine and Methionine Derived from Ruminally Protected Lysine and Methionine in Holstein Heifers
In order to estimate the availability of ruminally-protected Lys (RPLys) and Met (RPMet), quantitative changes of free Lys and Met in the total abomasal outflow and feces were determined in three Holstein heifers with a T-shaped duodenal cannula. RPLys was prepared by coating Lys with fat and RPMet with a pH-sensitive polymer. RPLys and RPMet containing 30 g of each amino acid were supplied tog...
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 کاملSupplemental protein plus ruminally protected methionine and lysine for primiparous beef cattle consuming annual rye hay.
Primiparous beef cows (n = 35 Bos taurus, average initial BW of 498 kg) were allotted to treatments in a split-plot designed experiment to determine the effects of supplemental ruminally protected amino acids on cow and calf productivity and metabolic changes in the cows. Cows were fed chopped annual rye hay at 1.5% of BW. The following treatments were used: 1) .8 kg soybean hulls, 1.4 kg groun...
متن کاملComplementary responses between feather meal and poultry by-product meal with or without ruminally protected methionine and lysine in growing calves.
We evaluated feather meal (FTH) and poultry by-product meal (PBM) as complementary protein sources for growing calves. In a replicated 84-d growth trial, individually fed steer calves (n = 120; 252 +/- 24 kg) were supplemented with urea or with graded levels of soybean meal (SBM), FTH, PBM, or 2/3 FTH:1/3 PBM (CP basis). Protein efficiency, calculated as gain above the urea control vs natural p...
متن کاملMeasuring resistance to ruminal degradation and bioavailability of ruminally protected methionine
The objectives of this study were to evaluate ruminal degradation and intestinal digestion of two ruminally protected methionine (RPM) products and to assess the potential use of changes in plasma methionine concentrations as an indication of methionine availability to the animal. Ruminal degradation of the protected methionine was assessed using the in situ technique. The intestinal availabili...
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ژورنال
عنوان ژورنال: Asian-Australasian Journal of Animal Sciences
سال: 1993
ISSN: 1011-2367,1976-5517
DOI: 10.5713/ajas.1993.325