I need help on number 7.8. I have provided the question and answer to 7.7 as it

Question

I need help on number 7.8. I have provided the question and answer to 7.7 as it is needed to do 7.8

7.7Consider the Thoroughbred Stallions Raise-a-Ruckus and Presidium. Raise-a-Ruckus's breeding value for racing time is -8 seconds. He was particularly well trained, having a permanent environmental effect of-6 seconds. Presidium's breeding value is -12 seconds, but his anent environmental effect is +2 seconds. Assuming bother horses have gene combination values of0 a. calculate progeny difference for each horse Raise-a-Ruckus ½ (-8)--4 Presidium ½ (-12)--6 b. calculate producing ability for each horse PA- BVGCV +Ep Raise-a-Ruckus -8+0+(-6)--14 Presidium -12+0+2 =-10 c. Which horse would you bet on in a race? Why? Raise-a-Ruckus because he has a better producing ability d. Which horse would you breed mares to? Why? Presidium because he has a better breeding value 7.8 Raise-a-Ruckus's owner (problem 77) had a bad week on Wall Street. So, trying to save a few bucks, he hired an inexpensive rookie jockey to ride the horse in today's race. Meanwhile Presidium's owner hired Raise-a-Ruckus's old experienced jockey for the day. If you knew that the rookie and the experienced jockey would contribute temporary environmental effects of +2 and -3 seconds respectively, a. which horse would you bet on today? Explain. b. Which horse would you bet on next year (assuming Raise-a-Ruckus's owner does better in the stock market and quits scrimping on jockeys)?

Explanation / Answer

7.8) For Raise -a- Ruckus

Ea= +2

PA= BV +GCV+ Ea

= -8 + 0 + 2

=-6

For Presidium

Ep= -3

PA= BV +GCV+ Ea

= -12 +0 -3

=-15

a. Presidium has a better producing ability. Hence, it would be selected for the current race.

b. Raise -a- Ruckus has a better producing ability (due to its breeding values and permanent environmental effects) Hence, it would be selected.

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