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<blockquote data-quote="Rmc" data-source="post: 1719648" data-attributes="member: 39072"><p>[URL unfurl="true"]https://www.dtnpf.com/agriculture/web/ag/news/article/2020/01/07/getting-heterosis-bump-want-anymore[/URL]</p><p>Please pay attention to the following quote in the above article </p><p>"Just because it's a stable cross (Santa Gertrudis, Beefmaster, Brangus, etc.) does not guarantee you have hybrid vigor," he says. He points to Brangus as a breed where through the selection for specific traits, specifically a focus on carcass traits, the Angus alleles have been stacked. </p><p></p><p>An allele is one of the possible forms of a gene. Most genes have two alleles, a dominant and a recessive. If a cow has both a dominant and recessive allele (heterozygous for that trait), she will express the dominant trait.</p><p></p><p>"In other words, over time, she becomes more like an Angus than a Brahman. You lose the very things you are trying to get with heterosis -- fitness, disease resistance, tolerance to parasites, suitability for southern climates. You are removing Brahman alleles and replacing them with Angus as you select for those Angus-dominant traits."</p></blockquote><p></p>
[QUOTE="Rmc, post: 1719648, member: 39072"] [URL unfurl="true"]https://www.dtnpf.com/agriculture/web/ag/news/article/2020/01/07/getting-heterosis-bump-want-anymore[/URL] Please pay attention to the following quote in the above article "Just because it's a stable cross (Santa Gertrudis, Beefmaster, Brangus, etc.) does not guarantee you have hybrid vigor," he says. He points to Brangus as a breed where through the selection for specific traits, specifically a focus on carcass traits, the Angus alleles have been stacked. An allele is one of the possible forms of a gene. Most genes have two alleles, a dominant and a recessive. If a cow has both a dominant and recessive allele (heterozygous for that trait), she will express the dominant trait. "In other words, over time, she becomes more like an Angus than a Brahman. You lose the very things you are trying to get with heterosis -- fitness, disease resistance, tolerance to parasites, suitability for southern climates. You are removing Brahman alleles and replacing them with Angus as you select for those Angus-dominant traits." [/QUOTE]
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