Proteins and Amino Acids in Non-Ruminants Flashcards
What are 9 essential amino acids?
Phenylalanine
Valine
Threonine
Tryptophan
Isoleucine
Methionine
Histidine
Leucine
Lysine
What is limiting amino acid?
amino acid that become deficient first as dietary crude protein concentration is reduced
What is a synthetic form of lysine?
L-lysine-HCl
What is bioavailability?
the proportion of an analyzed element that is available in a form that can be digest and absorbed by the animal
What is fecal digestiblility?
a way to measure total tract digestibility
FD,% = (Consumed-Excreted)/Consumed
What is ileal digestibility?
a more accurate way to measure digestibility, can be measured by euthanasia or through a canula
What is apparent ileal digestibility?
assumes all amino acids are from digestion
What is true ileal digestibilty
does not include undigested feed lysine or endogenous losses
What is standardized ileal digestibility?
does not include basal endogenous losses
What are the endogenous fractions?
- basal endogenous losses
- diet induced dietary losses
How do you calculate SID?
(lysine intake - ileal lysine - basal endogenous lysine) /
lysine intake