5) Remove your bull(s) from the herd. Select the removal date to coincide with about a 120-day season for your spring-calving cows. In our example, we would remove the bull(s) near the end of August. He would stay in the bull pen until May 7 of next year.
6) Sixty days after removing the bulls from the herd (or at a con- venient time near this date), preg- nancy check all cows and cull all non-pregnant dry, breeding-age females that have been running with the bull and all non-preg- nant cows with calves 5 months of age or older. Your fall-calving cows have likely either calved or are very close to calving.
7) You may want to consider start- ing the breeding season of your replacement heifers 20 to 30 days ahead of the fi nal breeding date for your herd. Most extended calving seasons are the result of failure of young cows to rebreed in a timely fashion. The additional 20 to 30 days enhances the opportunity for these young cows to rebreed next season. So your replacement heifer breeding season would start around April 10 and these females would begin calving around Jan. 20. I realize that this is a bit early for calving and you might ex- perience 1 to 2 percent higher calf death loss. Financially, 1 to 2 percent death loss is easier to swallow than a 25 percent decrease in pregnancy rate the following year.
8) The second year follow the same system as outlined above except remove the bull on the week of July 20. If you have fall and spring calvers, then put the bull in for the fall cows around Nov. 20 and remove him around Jan. 20.
tscra.org
We specialize in: Calving Ease Bulls
Energy Efficient Cows High Quality Beef on Grass
Bill & Yvonne Woods •
woodston@industryinet.com •
www.scotchirishherd.com Mark Wells • 979-877-8969
October 2016 The Cattleman 109
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