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Breeding / Calving Issues
Calving ease/Birthweight
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<blockquote data-quote="Ky hills" data-source="post: 1315300" data-attributes="member: 24816"><p>This topic has came up on a few different threads recently, and it is of interest to me. I sell some bred heifers each year, and one of the main goals of the sale is to provide replacement females that have as many variables contained as possible, so that as many live healthy calves are on the ground as possible. Of these variables, the use of calving ease bulls is a must. I try to use bulls with high enough CED's that if they fluctuate, they will still be CE. I am hearing on here that a lot of folks see issues with real small calves, and I have heard of several cases, where cows as well as heifers have had tiny calves. I have heard some reasoning for it is that from using light birthweight bulls for multiple generations. A friend has bought some heifers from me through the sale for at least 3 years,</p><p>last year he had a heifer to have a calf of about 30 pounds. I think it lived for a while but died after a few days. After that I used a different AI bull. Knowing that the female accounts for half of the genetics, are there bulls that are more consistent with a range of birthweights than others? I want to try to insure as much calving ease, but at the same time I would like to avoid the too small calves.</p></blockquote><p></p>
[QUOTE="Ky hills, post: 1315300, member: 24816"] This topic has came up on a few different threads recently, and it is of interest to me. I sell some bred heifers each year, and one of the main goals of the sale is to provide replacement females that have as many variables contained as possible, so that as many live healthy calves are on the ground as possible. Of these variables, the use of calving ease bulls is a must. I try to use bulls with high enough CED's that if they fluctuate, they will still be CE. I am hearing on here that a lot of folks see issues with real small calves, and I have heard of several cases, where cows as well as heifers have had tiny calves. I have heard some reasoning for it is that from using light birthweight bulls for multiple generations. A friend has bought some heifers from me through the sale for at least 3 years, last year he had a heifer to have a calf of about 30 pounds. I think it lived for a while but died after a few days. After that I used a different AI bull. Knowing that the female accounts for half of the genetics, are there bulls that are more consistent with a range of birthweights than others? I want to try to insure as much calving ease, but at the same time I would like to avoid the too small calves. [/QUOTE]
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