ANSI 4613 Exam 1 Questions and
Answers 100% Correct.
How much forage (in DM) will a 1,000 lb. cow consume per year? - ANSWER-26 lb.
DM/day x 365 days/year = 9,490
9,500 lb. DM/year
A producer determined his property has 320 acres in Bermudagrass pastureland. He
intends to fertilize the Bermudagrass at a rate of 100 lb. of actual N fertilizer per acre
per year.
What is his expected annual forage yield per acre? - ANSWER-100 lb. N = 2 tons
yield/acre
1 ton = 2,000 lb.
2 x 2,000 = 4,000 lb./acre x 320 acres = 1,280,000 lb. yield/year
A producer determined his property has 320 acres in Bermudagrass pastureland. He
intends to fertilize the Bermudagrass at a rate of 100 lb. of actual N fertilizer per acre
per year.
If he intends to "take half & leave half" and use continuous grazing. How many 1,000 lb.
cows should he be able to run on his 320 acres of pasture? (annual yield = 1,280,000
lb.) - ANSWER-1,280,000 ÷ 2 = 640,000 lb. DM
640,000 lb. DM ÷ 9,500 lb. = 67 cows
How many 1,000 lb. cows could a producer run on 320 acres of native grass with an
expected annual yield of 3,000 lb. of forage per acre? (assume take half & leave half) -
ANSWER-3,000 lb. DM x 320 acres = 960,000 lb. DM
960,000 lb. DM ÷ 2 = 480,000 lb. DM needed
480,000 lb. DM/year ÷ 9,500 lb. DM/cow/year = 50 cows
Assuming you own 100 head of 1,000 lb. cows and that you will "take half & leave half"
in a continuous grazing system, how much native grass pasture would you need to run
the 100 cows? (Assume grass production of 3,000 lb. of DM/acre) - ANSWER-9,500 lb.
DM x 100 cows = 950,000 lb. DM
, 950,000 lb. DM x 2 = 1,900,000 lb. DM needed
1,900,000 lb. DM ÷ 3,000 lb. DM/acre = 633 acres needed
Assuming you own 100 head of 1,000 lb. cows and that you will "take half & leave half"
in a continuous grazing system, how much bermudagrass pasture would you need to
run the 100 cows? (Assume you will fertilize the bermudagrass pasture with 150 lb. of
actual N fertilizer per acre) - ANSWER-150 lb. N = 3 tons yield/acre
1 ton = 2,000 lb.
3 x 2,000 lb. = 6,000 lb. yield/acre
9,500 lb. DM x 100 cows = 950,000 lb. DM x 2 = 1,900,000 lb. DM needed
1,900,000 lb. DM ÷ 6,000 = 317 acres
You own 230 head of cows that weigh 1,400 lb. What is the annual expected DM intake
for each cow? - ANSWER-26 lb. DM/day x 365 days = 9,490 lb. DM
9,500 lb. DM x 1.4 = 13,300 lb. DM/year
You own 230 head of cows that weigh 1,400 lb. What is the annual expected DM intake
for the entire group? (13,300 lb. DM/cow) - ANSWER-13,300 lb. DM/cow x 230 cows =
3,059,000 lb. DM for entire group
You own 230 head of cows that weigh 1,400 lb. How much forage needs to be
produced annually to the 230 head? (13,300 lb. DM/cow) - ANSWER-13,300 lb.
DM/cow x 230 cows = 3,059,000 lb. DM
3,059,000 lb. DM x 2 = 6,118,000 lb. DM needed annually
You own 230 head of cows that weigh 1,400 lb.
Three sections (1,920 acres) of native grass are available for purchase at $1,500 per
acre. Past production records indicate this pasture will yield an average of 3,325 lb. DM
per acre. You can secure lending for the $2,880,000 total cost at 4.5% interest on a 30
year loan. Your amortization schedule indicates you will pay $175,111 annually to pay
off your land loan over the next 30 years.
What is your annual cost of grass per cow? - ANSWER-$175,111 ÷ 230 = $761.35
annually/cow
1,920 acres of native grass can be leased for $30 per acre. What is the total cost of the
grass lease? - ANSWER-1,920 acres x $30 = $57,600 annually
You own 230 head of cows that weigh 1,400 lb.
