Page 15 - MWC 4-21-2022s

The Impact of Bull Selection – Part 2 The Midwest Cattleman · April 21, 2022 · P15

Last time I left you with Now we consider the ge-
the question: Which bull netic values of two new po-
transmits more profit poten- tential herd bulls.
tial to this operation? Before
the answer, a brief recap of • WW HP Milk MW
the example: New Herd 71 15 20 68
In a herd using bulls as Bull 1
rotational sires, selecting the
best 20% of heifers to develop New Herd 101 9 20 122 If we select Bull 1 •Average weaning weight
Bull 2
as replacements, and selling •1,380-pound average ma- 500 pounds
all other calves at weaning, What should we expect if ture cow size •Pounds of Calf Weaned/
with the following levels per- we fast forward 5 – 6 years? •91% pregnancy rate Exposed Female = 440
formance: •88% calf crop weaned continued on page 16
•1,400-pound average ma-
ture cow weight
•85% pregnancy rate
•82% calf crop weaned
•Average weaning weight
500 pounds
•Pounds of Calf Weaned/
Exposed Female = 410
This data indicates that
improving the Pounds of Calf
Weaned/Exposed Female on
a whole herd basis results in
more profit potential of this
operation.
Average genetic values of
five bulls that sired the exist-
ing cowherd:
• WW HP Milk MW
Average: 71 9 20 88

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Presently nice selection of
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in age from 14 months to 24
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W
ease coupled with gain-ability
ease coupled with gain-ability
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or
or
lincoln@grm.net
lincoln@grm.net