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Hereford question
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<blockquote data-quote="Brandonm22" data-source="post: 756778" data-attributes="member: 7645"><p>Line Ones were linebred for improving weaning weight. Weaning weight, growth, and frame are all related. Most of the other Hereford lines were bred for either quality eating experience, showring phenotype (pre 1964 generally a small frame size was desirable), or for fertility and easy keeping traits. When the market demanded growth, production, and frame most linebreeders had cattle that were not selected for any of those things. The Line Ones became much more popular. To stay in the bull business a lot of Hereford breeders were forced to outcross to that line (in many cases ending decades of linebreeding experiments). The only thing that is silly is your inability to grasp that decreasing the genetic diversity within a line over time makes rapid change in phenotype problematic. If suddenly the industry switched to a frame 2 grass fattened standard, most line one herds would have a difficult time finding the genetics within their linebred cow herd to produce that new standard.</p></blockquote><p></p>
[QUOTE="Brandonm22, post: 756778, member: 7645"] Line Ones were linebred for improving weaning weight. Weaning weight, growth, and frame are all related. Most of the other Hereford lines were bred for either quality eating experience, showring phenotype (pre 1964 generally a small frame size was desirable), or for fertility and easy keeping traits. When the market demanded growth, production, and frame most linebreeders had cattle that were not selected for any of those things. The Line Ones became much more popular. To stay in the bull business a lot of Hereford breeders were forced to outcross to that line (in many cases ending decades of linebreeding experiments). The only thing that is silly is your inability to grasp that decreasing the genetic diversity within a line over time makes rapid change in phenotype problematic. If suddenly the industry switched to a frame 2 grass fattened standard, most line one herds would have a difficult time finding the genetics within their linebred cow herd to produce that new standard. [/QUOTE]
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