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Breeding / Calving Issues
older cow with bad bag..but new heifer calf...what are the odds of her passing bad bag to new calf?
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<blockquote data-quote="Jeanne - Simme Valley" data-source="post: 1848240" data-attributes="member: 968"><p>Here's a statement taken from an Ohio State University article:</p><p>"<em>Udder scores in beef cattle are considered to be moderately heritable. Two scores are typically taken on beef cows, suspension and teat size. The heritability for suspension is .32 and .28 for teat size. What these values tell us is that females with good, or bad, udders tend to pass that trait to their daughters. From a practical standpoint in your herd, if you have a cow that has an undesirable udder it might not be economically feasible to cull her, but you would definitely want to avoid retaining her daughters as replacements. However, if the udder quality is so poor that it affects the calf's ability to nurse resulting in reduced performance, culling may be your best option. Also, when purchasing your herd bulls that you intend to retain daughters from, it is a good idea to take a look at his dam and assess her udder quality. In this case it is not necessary to be too selective, but you want to avoid a bull from a dam that has extremely poor udder quality. Of course there is less relationship between a replacement heifer and her grand-dam than between her and her dam."</em></p><p><em>[URL unfurl="true"]https://u.osu.edu/beef/2019/05/15/udder-quality-in-beef-cows-does-it-matter/[/URL]</em></p></blockquote><p></p>
[QUOTE="Jeanne - Simme Valley, post: 1848240, member: 968"] Here's a statement taken from an Ohio State University article: "[I]Udder scores in beef cattle are considered to be moderately heritable. Two scores are typically taken on beef cows, suspension and teat size. The heritability for suspension is .32 and .28 for teat size. What these values tell us is that females with good, or bad, udders tend to pass that trait to their daughters. From a practical standpoint in your herd, if you have a cow that has an undesirable udder it might not be economically feasible to cull her, but you would definitely want to avoid retaining her daughters as replacements. However, if the udder quality is so poor that it affects the calf's ability to nurse resulting in reduced performance, culling may be your best option. Also, when purchasing your herd bulls that you intend to retain daughters from, it is a good idea to take a look at his dam and assess her udder quality. In this case it is not necessary to be too selective, but you want to avoid a bull from a dam that has extremely poor udder quality. Of course there is less relationship between a replacement heifer and her grand-dam than between her and her dam." [URL unfurl="true"]https://u.osu.edu/beef/2019/05/15/udder-quality-in-beef-cows-does-it-matter/[/URL][/I] [/QUOTE]
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Breeding / Calving Issues
older cow with bad bag..but new heifer calf...what are the odds of her passing bad bag to new calf?
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