Exam 2 review Flashcards
(24 cards)
What percent of total feed energy fir beef is used by the breeding herd
70
T/F corn silage and cottonseed hulls are non-grass carbonaceous roughages
TRUE
T/F environment is a factor affecting NEg requirements for feedlot cattle
FALSE
T/F urea is classified as a carbonaceous concentrate
FALSE
what is potassium carbonate used for
drying agent
T/F corn silage is a carbonaceous roughage
TRUE
T/F rendered animal fat is a proteinaceous concentrate
FALSE. it is a carbonaceous concentrate
which of the following has the lowest crude protein
a. bermuda grass
b. alfalfa
c. rapeseed
d. soybean meal
bermuda grass
CP requirements for a medium-frame steer weighing 400 lbs will be (higher/lower) than a medium-frame steer weighing 800 lbs
LOWER
how much CP% do proteinaceous roughages contain
> 10%
which would be highest in ADF
Wheat grain
CSM
Dallisgrass
Meat and bone meal
feather meal
dallisgrass
T/F barley grain is a carbonaceous concentrate
TRUE
T/F soybean meal is a carbonaceous concentrate
FALSE. It is a preteinaceous concentrate
T/F perennial grass is more digestible than annual grass
FALSE. it is less digestible
which forage’s quality is most greatly affected by plant maturity
warm season grasses
rank digestibility for cool season grasson, warm season grasses, legumes
most: legumes
middle: cool-season
least: warm-season
what are corn silage and corn stover silage classified as
carbonaceous roughages
what proportion of dry matter weight of corn silage is comprised of corn grain
50%
difference between direct cut silage and silage
direct cut: wet forage cut and fed directly to animal(no ensiling)
silage: cut then then ensiled
downside of limit grazing
you have to spend money to get a high quality forage(especially in the winter)
what is in ADF
cellulose and lignin
what is in NDF
cellulose
hemicellulose
lignin
why is TDN:CP better to look at for quality than either alone
if the ratio isnt right microbes will not function well and digestion/intake will decrease
