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F1 Bulls (again)
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<blockquote data-quote="Aero" data-source="post: 482596" data-attributes="member: 2076"><p>A few reasons:</p><p>the most consistent production plan is from an F1. you can try to make F1 calves by using a purebred herd of cows and a purebred bull of a different breed, but there is one big problem: productive life of the cows. F1 cows have been shown to have a 25% longer productive life (25% more pounds of calf) than purebred cows. when you look at how many replacement heifers you need when the cows last 25% longer, there is quite a bit of difference in money. roughly, developing a heifer will cost you $800 more than a cow producing another calf. you also can sell that female calf for a profit that year instead of waiting the average 6-7 years for a cow to become profitable. basically, making F1 calves doesnt make good sense in the long run. to get around this, you need to make the 2nd most consistent animals: calves out of F1 cows and a purebred bull of a 3rd breed. this way you get max/optimum heterosis with a cow herd that is made to make you money.</p><p></p><p>using an F1 bull on purebred cows would make a good product, but would be giving up a lot on profitability. using F1 bulls on F1 cows would maximize heterosis but would throw a lot of factors into the mix making the animals less consistent and less predictable. using F1 bulls on a rainbow herd makes decent sense as long as you commit to using the same type for a good amount of time. this way, you have good consistency in the calves and drive the cow herd in the same direction without giving up heterosis. some stuff i have read shows that heterosis is retained for quite a few generations when used on any type of herd and is probably the best way to stabilize type in a mixed up herd.</p><p></p><p>In a commercial herd, the cows make you money, not the calves. you can use up your heterosis on the cow or the calf. use max/optimum heterosis creating cows that have a long productive life (preventing replacement heifer costs).</p></blockquote><p></p>
[QUOTE="Aero, post: 482596, member: 2076"] A few reasons: the most consistent production plan is from an F1. you can try to make F1 calves by using a purebred herd of cows and a purebred bull of a different breed, but there is one big problem: productive life of the cows. F1 cows have been shown to have a 25% longer productive life (25% more pounds of calf) than purebred cows. when you look at how many replacement heifers you need when the cows last 25% longer, there is quite a bit of difference in money. roughly, developing a heifer will cost you $800 more than a cow producing another calf. you also can sell that female calf for a profit that year instead of waiting the average 6-7 years for a cow to become profitable. basically, making F1 calves doesnt make good sense in the long run. to get around this, you need to make the 2nd most consistent animals: calves out of F1 cows and a purebred bull of a 3rd breed. this way you get max/optimum heterosis with a cow herd that is made to make you money. using an F1 bull on purebred cows would make a good product, but would be giving up a lot on profitability. using F1 bulls on F1 cows would maximize heterosis but would throw a lot of factors into the mix making the animals less consistent and less predictable. using F1 bulls on a rainbow herd makes decent sense as long as you commit to using the same type for a good amount of time. this way, you have good consistency in the calves and drive the cow herd in the same direction without giving up heterosis. some stuff i have read shows that heterosis is retained for quite a few generations when used on any type of herd and is probably the best way to stabilize type in a mixed up herd. In a commercial herd, the cows make you money, not the calves. you can use up your heterosis on the cow or the calf. use max/optimum heterosis creating cows that have a long productive life (preventing replacement heifer costs). [/QUOTE]
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