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Nitrogen metabolism in the rumen.
TLDR
It was concluded that optimum bacterial growth in the rumen occurs when EMPS is 29 g of bacterial N/kg of fermented organic matter, and ENU is 69%, implying that bacteria would require about 1.31 x rumen-available N per unit ofacterial N. Expand
A three-step in vitro procedure for estimating intestinal digestion of protein in ruminants.
TLDR
A three-step in vitro procedure was developed to estimate intestinal digestion of proteins in ruminants and the pancreatin digestion step was validated using 34 duodenal samples from which small intestinal CP digestion was determined in vivo. Expand
Evaluation of a mathematical model of rumen digestion and an in vitro simulation of rumen proteolysis to estimate the rumen-undegraded nitrogen content of feedstuffs.
TLDR
The UDN values estimated from simulated rumen proteolysis and those determined in vivo for twelve mixed diets were in close agreement and can serve as a simple, rapid and sensitive method to estimate UDN in a variety of feedstuffs. Expand
Effects of protein source on nitrogen metabolism in continuous culture and intestinal digestion in vitro.
TLDR
Study of the effects of protein supplements on ruminal fermentation and CP digestion found Supplementation of diets with proteins low in ruminal degradability increased flows of nonammonia N, dietary N, and total and essential AA and modified the AA profile flowing out of fermenters. Expand
Alternative techniques for measuring nutrient digestion in ruminants.
TLDR
This review summarizes various in situ or in vitro procedures for estimating ruminal and small intestinal nutrient digestion that have been proposed and summarized. Expand
Taxon‐specific associations between protozoal and methanogen populations in the rumen and a model rumen system
TLDR
Methanogen populations in the rumen and in model rumen systems (operated over a 240-h period) were studied using the small subunit (SSU) rRNA phylogenetic framework for group-specific enumerations and were shown to be essentially free living. Expand
Comparison of microbial populations in model and natural rumens using 16S ribosomal RNA-targeted probes.
TLDR
This model rumen system may serve as a suitable tool for studying aspects of ruminal microbial ecology and may resolve some of the relationships between microbial community structure and function by providing control of experimental conditions. Expand
Evaluation of chemical and physical properties of feeds that affect protein metabolism in the rumen.
TLDR
Evaluating quantitatively the chemical and physical properties of protein and energy sources that determine AA availability to lactating cows and factors that alter microbial metabolism of N in the rumen and subsequently protein supply to the small intestine are evaluated. Expand
Nitrogen metabolism of early lactation cows fed diets with two different levels of protein and different amino acid profiles.
TLDR
It is concluded that milk protein production during early lactation is less susceptible to variations in dietary CP contents than variations in the AA profile of the dietary protein. Expand
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