Quiz 3: Lecture 11-16

Question 1

As forage matures, which plant componet increases and is responsible for decreasing digestability of cellulose?

Answer 1

lignin

Question 2

As a silage ferments, which fermentation product is responsible for reducing pH quickly to prevent bacterial growth and spoiling of the silage?

Answer 2

Lactic acid

Question 3

Which energy concentrate must be heat-treated to inactivate tannins in the seed coat?

Answer 3

Sorghum

Question 4

What is the best feeding strategy for an obese horse to starting decrease feed intake?

Answer 4

Feed hay at 2% current body weight for 2 weeks, then feed at 1.5% current body weight for 2 weeks, then feed at 1.5% ideal body weight

Question 5

A growing Thoroughbred colt is eating 3.2% of his body weight in dry matter each day. He currently weighs 580 lbs. How much dry matter is this colt consuming per day?

Answer 5

18.6 lbs DM/d

Question 6

Fructans are a type of non-structural carbohydrate (NSC) that are also a storage carbohydrates in growing grasses. Why are high levels of fructans dangerous for horses?

Answer 6

• they escape small intestinal digestion
• They are rapidly fermented in the large intestine

Question 7

Which disorder can develop due to fumonisin toxicity?

Answer 7

leukocephalmalacia

Question 8

A starving horse should be started on a poor to moderate quality hay fed at 50% of maintenance based on ideal body weight.

Answer 8

true

Question 9

Horses are more prone to developing hyperlipemia when fasted or in negative energy balance compared to ponies.

Answer 9

false

Question 10

If a horse is able to eat 16.3 lbs of DM/d and a hay is 91.6% DM, how much is this horse eating on an as-fed basis?

Answer 10

17.8 lbs hay AF