Nutrition II

Question 1

phenethanolamine derivative known as beta-agonsit

Answer 1

ractopamine HCl

Question 2

binds to receptors in a muscle cell to initiate an increase in protein synthesis

Answer 2

ractopamine HCl

Question 3

what happens when ractopamine HCl binds to receptors in muscle cells

Answer 3

increase in muscle fiber size

Question 4

true or false: ractopmine HCl differs from hormone implants

Answer 4

true

Question 5

ractopamine HCl work at the _____ level & _____ affect hormone status

Answer 5

cellular; doesn’t

Question 6

the generic name for ratopamine HCl

Answer 6

paylen

Question 7

what are 2 beta-agonists routinely used in human medicine

Answer 7

beta-1 & beta-2

Question 8

what does beta-1 treat?

Answer 8

cardiac ailments

Question 9

what 3 things is beta-2 used for

Answer 9

1. asthma
2. COPD
3. premature labor

Question 10

2 reasons why beta-agonists are used

Answer 10

1. short ½ life

2. metabolized & excreted quickly

Question 11

beta-agonists can or cannot be stored in animal tissues

Answer 11

cannot

Question 12

name 2 other beta-agonists

Answer 12

1. clanbuterol (banned in US)

2. zilpaterol

Question 13

how much ractopamine HCl is used in diet

Answer 13

4.5-9 g/ton

Question 14

finishing diet with ractopamine must have ___% CP

Answer 14

16% (to be able to build muscle)

Question 15

2 ways to feed ractopamine to pigs that are going to market

Answer 15

1. for at least 90 lbs of gain

2. last 35 days

Question 16

3 increase benefits to ractopamine HCl

Answer 16

1. average daily gain
2. lean gain
3. dressing percentage

Question 17

5 decrease benefits to ractopamine HCl

Answer 17

1. feed:gain ratio
2. backfat
3. days on feed
4. manure output
5. nitrogen excretion

Question 18

average dressing percentage for swine

Answer 18

72-73%

Question 19

4 disadvantages to feeding ractopamine HCl

Answer 19

1. increase protein & lysine req.
2. increase heart rates (usually b/c being fed too much)
3. increase sensitivity to rough handling
4. slightly less tender meat (b/c take fat out to make muscle)

Question 20

heavier pigs consume more feed/day than ____ pigs

Answer 20

lighter

Question 21

fatter pigs consume more feed/gain than ____ pigs

Answer 21

leaner

Question 22

barrows (after 55lbs) consume more feed/day than ____

Answer 22

gilts

Question 23

healthy pigs consume more feed/day than ___ pigs

Answer 23

sick

Question 24

pigs in cold env. consume more feed/day than pigs in an _____ temp.

Answer 24

average

Question 25

un-crowded pigs consume more feed/day than ____ pigs

Answer 25

crowded

Question 26

as pigs ____ in weight require more feed/gain

Answer 26

increase

Question 27

fat pigs require more feed/gain than ____ pigs

Answer 27

lean

Question 28

barrows require more feed/gain than _____

Answer 28

gilts

Question 29

cold pigs require more feed/gain than ____ pigs

Answer 29

non-cold

Question 30

sick pigs require more feed/gain than ___ pigs

Answer 30

healthy

Question 31

most common method of feed processing

Answer 31

grinding

Question 32

_____ in particle size of feed, ____ surface area of grain

Answer 32

decrease; increase

Question 33

3 benefits of increases SA of feed

Answer 33

1. greater interaction with digestive enzymes
2. increase feed efficiency
3. increase ease of handling & mixing

Question 34

3 effects of fine grinding feed

Answer 34

1. increase dustiness
2. causes bridging in feeders & bulk bins
3. causes gastric ulcers