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Birth Weight/Calving Ease
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<blockquote data-quote="Ky hills" data-source="post: 1558009" data-attributes="member: 24816"><p>Some of the current topics being discussed on here are informative and insightful. </p><p>We often hear a negative tone in regards to continuous use of low BW, high CED Bulls. It does make sense to me that over time it could definitely decrease weaning weights, and ability of females to calve efficiently, as well as extremes in small size in calves at birth. </p><p>On the other side of the equation, along the lines of the larger cows. My thoughts are would it be possible to go to far in the opposite direction? I have been at meetings where some of the U.K. Speakers, have suggested not keeping replacement heifers from Bulls with higher birth weights, as the female contributes to the calf size as well as the bull. I am wondering if by continual use of just an example Bulls with BW and CED like Gar Grid Maker, SAV Harvestor, Connealy Earnan would make for larger cows as well as larger calves at birth. Thus creating a calving issue when used in crossbreeding or herds of cows of smaller sizes? Somewhat like a Angus version of continental breed affect in calving and growth rates.</p></blockquote><p></p>
[QUOTE="Ky hills, post: 1558009, member: 24816"] Some of the current topics being discussed on here are informative and insightful. We often hear a negative tone in regards to continuous use of low BW, high CED Bulls. It does make sense to me that over time it could definitely decrease weaning weights, and ability of females to calve efficiently, as well as extremes in small size in calves at birth. On the other side of the equation, along the lines of the larger cows. My thoughts are would it be possible to go to far in the opposite direction? I have been at meetings where some of the U.K. Speakers, have suggested not keeping replacement heifers from Bulls with higher birth weights, as the female contributes to the calf size as well as the bull. I am wondering if by continual use of just an example Bulls with BW and CED like Gar Grid Maker, SAV Harvestor, Connealy Earnan would make for larger cows as well as larger calves at birth. Thus creating a calving issue when used in crossbreeding or herds of cows of smaller sizes? Somewhat like a Angus version of continental breed affect in calving and growth rates. [/QUOTE]
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