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<blockquote data-quote="CVAR" data-source="post: 1675857" data-attributes="member: 16130"><p>I've used almost every synch program ever developed over the years. Now, I've gone back to trying to AI off natural heats, sometimes we'll also give a shot of PG to groups we know are cycling already and others, especially heifers we use a full blown cidr protocol. For ET we always use cidr protocol. Depending on the situation, we never AI more than twice for same animal in a season (rare to AI twice at that) and then we kick a clean up bull out. Once calving time comes, AI sired bulls have the best chance as being sold as breeders, bulls sired by the clean up bulls have much less of a chance and are mostly turned in to steers before they really have a chance to develop. Also, one thing that might help save a few $$ for the ones counting every dolllar (which is my situation too, at least to a degree) we use cidrs twice before tossing them. When new cidrs go in, I tie one knot on the tail, then next year, I tie another knot, once I pull a cidr out that has two knots on the tail, it's tossed. Care of the used cidr is important if you do this. I was at a notable ag university awhile back where they were pulling cidrs and saving them for a second use but the person that pulled them, through them in a 5gal bucket of water (and I'm assuming nolvasan) submerging them, then left them there. All the hormone leaks out when you do that so those would be no good after that.</p></blockquote><p></p>
[QUOTE="CVAR, post: 1675857, member: 16130"] I’ve used almost every synch program ever developed over the years. Now, I’ve gone back to trying to AI off natural heats, sometimes we’ll also give a shot of PG to groups we know are cycling already and others, especially heifers we use a full blown cidr protocol. For ET we always use cidr protocol. Depending on the situation, we never AI more than twice for same animal in a season (rare to AI twice at that) and then we kick a clean up bull out. Once calving time comes, AI sired bulls have the best chance as being sold as breeders, bulls sired by the clean up bulls have much less of a chance and are mostly turned in to steers before they really have a chance to develop. Also, one thing that might help save a few $$ for the ones counting every dolllar (which is my situation too, at least to a degree) we use cidrs twice before tossing them. When new cidrs go in, I tie one knot on the tail, then next year, I tie another knot, once I pull a cidr out that has two knots on the tail, it’s tossed. Care of the used cidr is important if you do this. I was at a notable ag university awhile back where they were pulling cidrs and saving them for a second use but the person that pulled them, through them in a 5gal bucket of water (and I’m assuming nolvasan) submerging them, then left them there. All the hormone leaks out when you do that so those would be no good after that. [/QUOTE]
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