01/25/13, 08:29 AM
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Caprice Acres
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Join Date: Mar 2005
Location: MI
Posts: 11,232
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CIDR stands for controlled internal drug release. It releases progesterone. It's kinda like a goat tampon that is stiff and rubbery, and has a t-shape that holds it in place in the vagina.
A normal animal's corpus luteum releases progesterone for about 14 days out of the heat cycle. Once the progesterone levels drop, this causes heat.
You can use CIDRS to get does to cycle out of season. You would want to use a drug such as PG600 to be sure that an animal is actually ovulating during these heats. IF used DURING the normal breeding season, PG600 *may* not need to be used.
I used them with GREAT sucess this past year. Its important for me to get kids during my spring break. I bred 10 does (4 AI, 6 live cover) and 9 took, using PG600 and CIDRs.
I then used them on 2 doelings and the one doe of the 10 that didn't take (she was an AI doe) for May kiddings. Used frozen PG600. Doelings went into heat at like 50 hrs after CIDR removal, and the adult doe never went into heat.
Doelings went into NATURAL heat again a few weeks later. Dunno if the PG600 frozen didn't work, or what...
Now, the doe that never went into heat also was given Lute and PG600, and STILL didn't go into heat. *sigh*
__________________
Dona Barski
"Breed the best, eat the rest"
Caprice Acres
French and American Alpines. CAE, Johnes neg herd. Abscess free. LA, DHIR.
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