A cow is fed 15 pounds (DM basis) of a diet that consists of 71% silage, 9% supp
ID: 56085 • Letter: A
Question
A cow is fed 15 pounds (DM basis) of a diet that consists of 71% silage, 9% supplement, and (100-71-9)% grain on a DM basis. If the silage is 32% DM, the supplement is 94% DM, and the grain is 88% DM, what is the percentage of silage in the diet on an as fed basis?
Balance a diet (by the Algebraic equation method) to meet the 12.1% crude protein (CP) requirement (DM basis) of cattle using grass hay (8.1% CP, DM basis), cracked corn grain (9.2% CP, DM basis), and a CP supplement (41.7% CP, DM basis). If 24% corn (DM basis) and (100-24)% hay was needed to meet the animal's total digestible nutrient (TDN) requirement, what is the percentage of supplement (DM basis) that needs to replace corn in the diet to meet the animal's CP requirement? (HINT: Assume corn and supplement have the same TDN value)
A replacement heifer with an initial body weight (BW) of 636 pounds needs to have a final BW of 801 pounds when the breeding season arrives. This animal requires 10 pounds per day of total digestible nutrients (TDN) to gain at a rate such that she achieves this weight by the breeding season. Determine the TDN concentration (percent on a DM basis) required in this animal's diet if its total DM consumption is 2.3% of its BW.
THREE SEPARATE QUESTIONS I REALLY NEED HELP ON! THANKS
Explanation / Answer
Balance a diet (by the Algebraic equation method) to meet the 12.1% crude protein (CP) requirement (DM basis) of cattle using grass hay (8.1% CP, DM basis), cracked corn grain (9.2% CP, DM basis), and a CP supplement (41.7% CP, DM basis). If 24% corn (DM basis) and (100-24)% hay was needed to meet the animal's total digestible nutrient (TDN) requirement, what is the percentage of supplement (DM basis) that needs to replace corn in the diet to meet the animal's CP requirement?
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