protein Flashcards
what is an essential amino acid
if tissue synthesis is incapable or unable to meet body requirements when they are absent from the diet.
what is a non - essential amino acid
if tissue synthesis can compensate for their absence from the diet.
how many amino acids are commonly found in animal tissues?
25
how many amino acids are required to be present in the diet of animals?
10
what are the 10 essential amino acids?
arginine
histidine
isoleucine
leuciene
lysine
methionine
phenylalanine
threonine
tryptophan
valine
what is arginine essential for?
maximum growth rates
what essential amino acid do cats have a high dietary requirement for?
taurine
why can requirements for EAA vary?
species
stage of life cycle/production state
what is crude protein?
total protein content of a feed
how do you calculate crude protein
from nitrogen content;
= nitrogen x 6.25
why is amino acid composition of diet less important in ruminants?
rumen microflora are capable of synthesising protein from non-protein nitrogen sources.
what limits protein metabolism in ruminants?
availability of nitrogen and available carbohydrates to fuel fermentation
what is the primary energy source for ruminants?
volatile fatty acids
what are ruminant microflora responsible for?
cellulose digestion to generate volatile fatty acids
where are proteins absorbed in all mammals?
small intestine as amino acids and peptides
