1. If a chick consumes 53.3 g of feed per day (As Fed) and produces 29.1 g of fe

Question

1. If a chick consumes 53.3 g of feed per day (As Fed) and produces 29.1 g of feces per day (As Excreted), what is the apparent dry matter (DM) digestibility? Assume the DM percentage of the feed is 82.8 % and the DM percentage of the feces is 42.5 %

2. A horse was dosed with slow-release CrO pellets that released 10 g/d CrO into the gut. After 10 days, fecal and pasture samples were taken, and DM digestibility was estimated using an internal marker. Assume the apparent DM digestibility calculated this way was 69%. What is the DM intake in kg given the following?

Feces CrO (DM basis): 5.8 g/kg

3. If a feed is 73.7% DM, 9.4% ash on a DM basis, 37.7% NDF on a DM basis, and 2.19% N on a AS FED basis:

What is the organic matter percentage on a DM basis?

4. You are stranded in the desert on a cold night and you find a friendly snake that wants to cuddle with you. How much heat do you expect the 27-kg snake to give off in kcal per d? Assume it hasn't eaten in a while and is resting.

5. Why is soybean meal heated before feeding it to non-ruminants?

a) It improves flavor and increases palatability.

b) It destroys trypsin inhibitors that affect protein digestion.

c) It destroys tannins that affect digestion

d) It breaks disulfide bonds to increase digestion

It prevents linkages that decrease digestibility.

Explanation / Answer

DM in feed

53.3 * 0.828 = 44.1324

DM in fecus

= 29.1 * 0.425=12.3675

apparent dry matter (DM) digestibility = (44.1324 - 12.3675) /44.1324 * 100 %

= 0.719763*100 %

= 71.9763 %

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