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<blockquote data-quote="brihop" data-source="post: 933673" data-attributes="member: 18530"><p>Correct that a PB bull over true F1 cows (of different breeds than the bull) would provide 25% more heterotosis to the calf crop than F1 x F1. I was thinking the vigor of the bull, not the calf crop... of course crop is more important though.</p><p></p><p>Speaking of HV, some big outfits like Adams Ranch and King Ranch are doing RA/GV composites with Gert and Braford... RAxBraf X GVxBraf. & RAxGert X GVxGert. Seems to me that theres not enough brahman blood in there, not only for heat tolerance, but I thought that cows needed at least 25% brahman blood to be able to restrict the birth weight of their calves. Also, curious about the point of doing that final cross which brings the RA & GV blood together, isn't HV is only diminishing? If they really wanted to bring all the breeds together then why not cut to the chase and put a balancer bull over the braf or gert cows and be done with it?</p><p></p><p>Sorry 'bout the rambling thread here!</p></blockquote><p></p>
[QUOTE="brihop, post: 933673, member: 18530"] Correct that a PB bull over true F1 cows (of different breeds than the bull) would provide 25% more heterotosis to the calf crop than F1 x F1. I was thinking the vigor of the bull, not the calf crop... of course crop is more important though. Speaking of HV, some big outfits like Adams Ranch and King Ranch are doing RA/GV composites with Gert and Braford... RAxBraf X GVxBraf. & RAxGert X GVxGert. Seems to me that theres not enough brahman blood in there, not only for heat tolerance, but I thought that cows needed at least 25% brahman blood to be able to restrict the birth weight of their calves. Also, curious about the point of doing that final cross which brings the RA & GV blood together, isn't HV is only diminishing? If they really wanted to bring all the breeds together then why not cut to the chase and put a balancer bull over the braf or gert cows and be done with it? Sorry 'bout the rambling thread here! [/QUOTE]
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