Lecture 7: Nutrition Animal Needs

Question 1

How does the egg get its nutrients and from where?

Answer 1

• embryo develops in egg without external sources of nutrients
• energy source is mostly from the yolk (lipids, carbs, lipoproteins from the liver)
• protein source is from albumen (egg white) and egg yolk (amino acids)
• vitamins water and minerals come from yolk (liposoluble) albumen (water soluble) and shell (calcium)
• formation of yolk sac produces digestive enzymes
• Allantois - embryonic bladder (waste secretion)
• amnion - physical protection of embryo
• use calcium from shell for embryos skeleton

Question 2

Where does all of embryos nutrients come from?

Answer 2

Mother, which goes to egg (important to have proper nutrition)

Question 3

What does the hen pass down to egg other than nutrients?

Answer 3

Antibodies (passive immunity) - immunoglobulins

Question 4

How long can chicks survive on the residual yolk sac?

Answer 4

1 week

Question 5

What type of feed, water and light do newborn chicks need?

Answer 5

• early access to feed and water
• photoschedule is 20-24 intermittent light hrs to encourage eating and then slowly decreased
• feed: energy (fat,carbs), Amino Acids, vitamins A, D (calcium absorption), E, Minerals, Phosporus and Calcium

Question 6

Which 9 Amino acids do poultry need?

Answer 6

Arginine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine

Question 7

What does the membrane do in the white of the egg?

Answer 7

Releases digestive enzymes, and maintains the shape

Question 8

What happens when chicks are hatched?

Answer 8

They are transported to the farm within 1-2 days of birth

Question 9

Birds dont eat if they dont have access to ______

Answer 9

Water