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<blockquote data-quote="LFF" data-source="post: 794140" data-attributes="member: 1147"><p>I not sure how to approach this subject concerning bull selection , however I'm going to open this topic for discussion beginning with a few questions. I've read Jan Bosnana and Gearld Frys view points on selection and am interested in other thoughts.</p><p></p><p>1) Do bull calves that show large amounts of seconday masculinity at 2 to 6 months produce better semen quality at 12-14 months of age? </p><p></p><p>My personal experience says no. I've had yearling bulls that were semen quality tested and the bulls with larger scrotal measurements normally had better semen quality than more mascline looking bulls with smaller scrotals. I'm not talking about yearling bulls that look like steers, but bulls that exhibit less masclinity at a very young age or bulls that seem to take 2 to 3 years of age to really look masculine.</p><p></p><p></p><p>2) Does early secondary masculinity increase ribeye size of yearlings?</p><p></p><p>I would think so.</p><p></p><p></p><p>3) How much ribeye size is due to testostrone that is removed upon casturation?</p><p></p><p>Early cutting or banding should affect ribeye size greatly, helps explain why so many use a growth implant.</p><p></p><p></p><p>4) Do high secondary masculine bulls have less marbling?</p><p></p><p>I think that this depends upon when they begin to show masculinity. I think that they should begin to show strong secondary masculinity by 10-12 months or age.</p><p></p><p></p><p>5) Are bulls that show strong secondary masculinity at a very early age often prone to be hard calving bulls?</p><p></p><p>I believe that they are.</p><p></p><p></p><p></p><p>Sorry about the spelling. I wish there was a spell check program attacted to the boards.</p></blockquote><p></p>
[QUOTE="LFF, post: 794140, member: 1147"] I not sure how to approach this subject concerning bull selection , however I'm going to open this topic for discussion beginning with a few questions. I've read Jan Bosnana and Gearld Frys view points on selection and am interested in other thoughts. 1) Do bull calves that show large amounts of seconday masculinity at 2 to 6 months produce better semen quality at 12-14 months of age? My personal experience says no. I've had yearling bulls that were semen quality tested and the bulls with larger scrotal measurements normally had better semen quality than more mascline looking bulls with smaller scrotals. I'm not talking about yearling bulls that look like steers, but bulls that exhibit less masclinity at a very young age or bulls that seem to take 2 to 3 years of age to really look masculine. 2) Does early secondary masculinity increase ribeye size of yearlings? I would think so. 3) How much ribeye size is due to testostrone that is removed upon casturation? Early cutting or banding should affect ribeye size greatly, helps explain why so many use a growth implant. 4) Do high secondary masculine bulls have less marbling? I think that this depends upon when they begin to show masculinity. I think that they should begin to show strong secondary masculinity by 10-12 months or age. 5) Are bulls that show strong secondary masculinity at a very early age often prone to be hard calving bulls? I believe that they are. Sorry about the spelling. I wish there was a spell check program attacted to the boards. [/QUOTE]
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