Proteins and Amino Acids in Non-Ruminants Flashcards

1
Q

What are 9 essential amino acids?

A

Phenylalanine
Valine
Threonine
Tryptophan
Isoleucine
Methionine
Histidine
Leucine
Lysine

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2
Q

What is limiting amino acid?

A

amino acid that become deficient first as dietary crude protein concentration is reduced

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3
Q

What is a synthetic form of lysine?

A

L-lysine-HCl

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4
Q

What is bioavailability?

A

the proportion of an analyzed element that is available in a form that can be digest and absorbed by the animal

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5
Q

What is fecal digestiblility?

A

a way to measure total tract digestibility
FD,% = (Consumed-Excreted)/Consumed

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6
Q

What is ileal digestibility?

A

a more accurate way to measure digestibility, can be measured by euthanasia or through a canula

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7
Q

What is apparent ileal digestibility?

A

assumes all amino acids are from digestion

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8
Q

What is true ileal digestibilty

A

does not include undigested feed lysine or endogenous losses

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9
Q

What is standardized ileal digestibility?

A

does not include basal endogenous losses

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10
Q

What are the endogenous fractions?

A
  1. basal endogenous losses
  2. diet induced dietary losses
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11
Q

How do you calculate SID?

A

(lysine intake - ileal lysine - basal endogenous lysine) /
lysine intake

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