
05/20/06, 08:37 AM
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Join Date: Nov 2003
Location: SE Ohio
Posts: 833
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On the AI, if you have only a single cow, getting her bred AI is more involved. You need reliable heat detection and the primary sign is standing heat. For standing heat in a cow you need another bovine (unlike swine, a human will do). When I have had a single Polled Hereford cow in the past, I was able to tell from discharge and her act of bawling/jumping the fence that she was in heat. Fortunately for me, I personally bred her 2 times 8 hours apart on those signs and was successful 2 years in a row, but chances of getting her one service is probably less than half. Depending on how large you let her calf get before butchering/selling it, the third time around her calf may provide you with heat detection by riding her. I had another single 2yo AngusXJersey heifer who never showed any signs of discharge/bawling/fence jumping and never bred by a bull when exposed for 4 months, so we cut our losses. It is possible that she would have bred at a later date, but we decided not to wait. My point with that is, that if you have a non-breeder, it is more difficult to tell when you only have a single cow. AI can be successful on a single cow by using hormones. Look up CIDR for more information. One CIDR and one shot of Lutalyse will run about $13 (calculated by bulk amount), but I don't think they come in single doses. We synchronize a small herd and buy them by the bag/bottle. Maybe if you find someone who does AI they can also find someone to sell you one CIDR and one shot. We've had 100% some years in FIL's beef herd breeding on standing heat after using the CIDR program with one service AI. If you just wait and AI all of the group at once at 72 hours your percentage will be way lower, but large farms do this rather than bring them in individually. With one cow, you would probably want to breed at 72 and again at 80 hours after removing the CIDR, so your AI service costs just doubled. Good luck!
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