Defintions 6,7

Question 1

What is a macromineral

Answer 1

mineral required in the diet at relatively high levels

Question 2

What is a micromineral

Answer 2

Minerals required in the diet at relatively low levels

Question 3

What is hydroxyapatite

Answer 3

Main inorganic component of bone, ~70 of bone weight. Contains Ca, P, O and H

Question 4

What is parturient paresis

Answer 4

Paralysis due to a sudden drop in blood Ca following onset of milk production; often called “milk fever”

Question 5

Nutritional Secondary Hyperparathyroidism

Answer 5

excessive bone resorption due to high levels of parathyroid hormone release associated with long term consumption of low Ca, high P diets

Question 6

Pica

Answer 6

Deranged appetite caused by specific mineral deficiencies

Question 7

Premix

Answer 7

mixture of ingredients designed to be mixed with other ingredients before use in a complete feed

Question 8

Metalloenzyme

Answer 8

Enzyme that contains one or more metal atoms as an integral part of its structure

Question 9

Goiter

Answer 9

Enlargement of the thyroid gland caused by an iodine deficiency

Question 10

Indispensable (essential) aa

Answer 10

AA that cannot be synthesized by the animal and must be provided in sufficient quantities in the diet

Question 11

Dispensable (non-essential) aa

Answer 11

AA that can be synthesized by the animal, not needed in diet

Question 12

Conditionally indispensable aa

Answer 12

AA required under certain conditions in amounts greater than can be synthesized by the animal

Question 13

Semi-indispensable aa

Answer 13

AA that can be synthesized by the animal but only from an indispensable precursor

Question 14

Peptides

Answer 14

chains of aa joined by peptide bonds

Question 15

Polypeptides

Answer 15

chains of large numbers of aa joined together by peptide bonds

Question 16

Proteins

Answer 16

a chain of aa (hundreds to thousands) joined together with peptide bonds

Question 17

Endopeptidase

Answer 17

Protein-degrading enzyme that cleaves bonds within a peptide chain

Question 18

Exopeptidase

Answer 18

Protein-degrading enzyme that cleaves bonds from the end of a peptide chain

Question 19

Liebig’s law of the minimum

Answer 19

A crop’s yield is restricted by the lack of a single element, even though there may be sufficient quantities of all other essential nutrients

Question 20

Bypass protein

Answer 20

Dietary protein which is not degraded by microbial action in the rumen