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Exam 2 sample - ANS 426 EXAM 2 SPRING 2005 NAME If you are...

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A N S 426: E XAM 2 N AME : S PRING , 2005 If you are considering taking the optional final, please indicate here: ________ ( I will grade these first so you can decide about final). Non-maternal Calf Nutrition 1. A cow calf producer needs your advice. He has been told he should wean his calves earlier than the traditional time frame. Why should he consider this change in his program? Specifically . . a. What we mean by early weaning? b. Does he need to practice retained ownership to benefit from early weaning? Yes he does because . . . (two reasons) No, he does not because . . .(two reasons) 2. Describe creep feeding in terms of a. what it is. b. why one would want to employ this practice. c. why one would not want to employ this practice d. the characteristics of a good creep feed Composites, Across Breed EPDs 3. My neighbor tells me there isn’t any difference between a composite and a crossbred. She is wrong. Explain the difference in terms of: a. amount of heterosis created. b. ease of management. 1
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c. the breed composition of the parents versus the calf. d. the role it plays in the need to purchase breeding stock. 4. If your neighbor mated a [ ¾ Charolais – ¼ Angus] composite bull to a [3/8 Angus-1/8 Charolais-½ Simmental] composite cow . . . a. What is the breed composition of the calf? b. Is maternal heterosis affecting the birth weight of this calf? Why or why not? c. Is paternal heterosis affecting the weaning weight of this calf? Why or why not?
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