Exam 2 review

Question 1

What percent of total feed energy fir beef is used by the breeding herd

Answer 1

70

Question 2

T/F corn silage and cottonseed hulls are non-grass carbonaceous roughages

Answer 2

TRUE

Question 3

T/F environment is a factor affecting NEg requirements for feedlot cattle

Answer 3

FALSE

Question 4

T/F urea is classified as a carbonaceous concentrate

Answer 4

FALSE

Question 5

what is potassium carbonate used for

Answer 5

drying agent

Question 6

T/F corn silage is a carbonaceous roughage

Answer 6

TRUE

Question 7

T/F rendered animal fat is a proteinaceous concentrate

Answer 7

FALSE. it is a carbonaceous concentrate

Question 8

which of the following has the lowest crude protein
a. bermuda grass
b. alfalfa
c. rapeseed
d. soybean meal

Answer 8

bermuda grass

Question 9

CP requirements for a medium-frame steer weighing 400 lbs will be (higher/lower) than a medium-frame steer weighing 800 lbs

Answer 9

LOWER

Question 10

how much CP% do proteinaceous roughages contain

Answer 10

> 10%

Question 11

which would be highest in ADF
Wheat grain
CSM
Dallisgrass
Meat and bone meal
feather meal

Answer 11

dallisgrass

Question 12

T/F barley grain is a carbonaceous concentrate

Answer 12

TRUE

Question 13

T/F soybean meal is a carbonaceous concentrate

Answer 13

FALSE. It is a preteinaceous concentrate

Question 14

T/F perennial grass is more digestible than annual grass

Answer 14

FALSE. it is less digestible

Question 15

which forage’s quality is most greatly affected by plant maturity

Answer 15

warm season grasses

Question 16

rank digestibility for cool season grasson, warm season grasses, legumes

Answer 16

most: legumes
middle: cool-season
least: warm-season

Question 17

what are corn silage and corn stover silage classified as

Answer 17

carbonaceous roughages

Question 18

what proportion of dry matter weight of corn silage is comprised of corn grain

Answer 18

50%

Question 19

difference between direct cut silage and silage

Answer 19

direct cut: wet forage cut and fed directly to animal(no ensiling)
silage: cut then then ensiled

Question 20

downside of limit grazing

Answer 20

you have to spend money to get a high quality forage(especially in the winter)

Question 21

what is in ADF

Answer 21

cellulose and lignin

Question 22

what is in NDF

Answer 22

cellulose
hemicellulose
lignin

Question 23

why is TDN:CP better to look at for quality than either alone

Answer 23

if the ratio isnt right microbes will not function well and digestion/intake will decrease