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marbling and tenderness genes
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<blockquote data-quote="OK Jeanne" data-source="post: 216115" data-attributes="member: 3333"><p>At first, there was one tenderness factor discovered -</p><p>calpastatin - and that test was patented by the Australian</p><p>GeneStar people. Later MARC released another factor to</p><p>the public, calpain, which is for an enzyme that aids in</p><p>tenderness during the ageing process. So at that point,</p><p>the GeneStar people had 4 "stars" as a perfect tenderness</p><p>score. They sold the N.Amer rights to calpastatin to </p><p>Bovigen, of Louisiana.</p><p></p><p>I obtained a breed comparison chart from GeneStar before</p><p>they sold to Bovigen. This is when 4 "stars" was a perfect</p><p>score:</p><p></p><p><img src="http://cattletoday.com/photos/data/500/medium/DNA_Chart012.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>You will note that Murray Greys have the highest percentage</p><p>of one and two star animals among the breeds tested. Only</p><p>those breeds with more than 100 animals tested were included on the chart.</p><p></p><p></p><p>Now MARC has released another newly discovered factor;</p><p>so the perfect score is 6 "stars". They will not now(and</p><p>probably never) release another breed comparison chart</p><p>because the one shown above made some Angus breeders</p><p>mad(Bovigen is owned by angus people) and really really</p><p>made the hereford people mad.</p><p></p><p>Our murray grey herd bull that we sell semen from has a</p><p>perfect 6 star score, as does his 3 yr old son. We are also</p><p>using semen from two other murray bulls, that also have</p><p>perfect scores.</p><p></p><p>Heredity/probablility<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown :(" loading="lazy" data-shortname=":(" />From a Gene Star brochure when they</p><p>had 4 stars as a perfect score)</p><p></p><p>If both sire & dam has the same score, the calf will also.</p><p></p><p>If sire has 2 stars and dam none, they show 100% chance</p><p>that the calf will have one star....</p><p></p><p>and so on.</p><p></p><p>You should write for their info packet/brochures to get</p><p>the full story.</p><p></p><p>We have decided not to use any bulls that do not have</p><p>a perfect tenderness score---because we sell beef.</p></blockquote><p></p>
[QUOTE="OK Jeanne, post: 216115, member: 3333"] At first, there was one tenderness factor discovered - calpastatin - and that test was patented by the Australian GeneStar people. Later MARC released another factor to the public, calpain, which is for an enzyme that aids in tenderness during the ageing process. So at that point, the GeneStar people had 4 "stars" as a perfect tenderness score. They sold the N.Amer rights to calpastatin to Bovigen, of Louisiana. I obtained a breed comparison chart from GeneStar before they sold to Bovigen. This is when 4 "stars" was a perfect score: [img]http://cattletoday.com/photos/data/500/medium/DNA_Chart012.jpg[/img] You will note that Murray Greys have the highest percentage of one and two star animals among the breeds tested. Only those breeds with more than 100 animals tested were included on the chart. Now MARC has released another newly discovered factor; so the perfect score is 6 "stars". They will not now(and probably never) release another breed comparison chart because the one shown above made some Angus breeders mad(Bovigen is owned by angus people) and really really made the hereford people mad. Our murray grey herd bull that we sell semen from has a perfect 6 star score, as does his 3 yr old son. We are also using semen from two other murray bulls, that also have perfect scores. Heredity/probablility:(From a Gene Star brochure when they had 4 stars as a perfect score) If both sire & dam has the same score, the calf will also. If sire has 2 stars and dam none, they show 100% chance that the calf will have one star.... and so on. You should write for their info packet/brochures to get the full story. We have decided not to use any bulls that do not have a perfect tenderness score---because we sell beef. [/QUOTE]
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