Lecture 6

Question 1

Proteins are expensive source of energy, what do we want them for?

Answer 1

Build muscle tissue

Question 2

What is the most important part of protein?

Answer 2

Contains N

Question 3

What is wrong with cereal diet?

Answer 3

Cereal grains only contain 10-15% proteins. We must supplement

Question 4

What are the principal protein sources in monogastric diet?

Answer 4

Oilseed

Question 5

In ruminants diets what is a good source of protein?

Answer 5

Alfalfa

Question 6

Do ruminants care about protein quality?

Answer 6

No they break everything down to ammonia and use ammonia to build microbial protein

Question 7

What about proteins make them difficult to digest?

Answer 7

Tightly folded tertiary structure

Question 8

2 factors determining protein quality?

Answer 8

Amino Acid Balance

Digestibility

Question 9

What are the essential amino acids?

Answer 9

Methionine

Valine

Phenylalanine

Isoleucine

Tryptophan

Threonine

Histidine

Arginine

Leucine

Lysine

Question 10

How is lysine supplemented for?

Answer 10

Protein supplement - soybean meal

Synthetic Lysine

Question 11

7 Functions of proteins

Answer 11

Growth of new tissue

Repair old tissue

Metabolism for energy

Strength -muscle and tendons

Enzymes

Hormones

Antibodies