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KMID : 0900920030270030241
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Korean journal of Animal Reproduction
2003 Volume.27 No. 3 p.241 ~ p.248
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Effects of Progestagens on Estrous Synchronization and Superovulation in Korean Native Goats
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Han Man-Hee
Park Byung-Kwon
Seo Kil-Woong
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Abstract
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This study was conducted to determine the effects of progestagen (Synchromate-B, Veramix, CIDR) and hormone (PMSG, FSH, hCG) treatments on superovulation and estrous synchronization in Korean native goats. Goats were initially superovulated by using progestagens (Synchromate-B, Veramix, CIDR) and hormones (FSH, PMSG, hCG). The progestagens were removed after 15 days of insertion and 0.88 mg of FSH was injected intramuscularly twice a day from day 12 to day 15. In addition, 150 IU of PMSG and 200 IU hCG were injected intramuscularly in the morning of day 12 and in the afternoon of day 15, respectively. Estrous synchronization was induced by the progestagen releasing devices for 13 days and intramuscular injection of 400 IU PMSG in the morning of day 11. The results were summarized as follows: 1. The responses of superovulation treated with three types (Synchromate-B, Veramix, CIDR) of progestagen were 98.6, 99.4 and 98.8%, respectively. The average ovulation rates with Synchromate-B, Veramix and CIDR were 12.58 pm 6.52, 12.91 pm 7.27 and 11.28 pm 6.33, respectively. The average ovulation rates of Synchromate-B and Veramix treatments were significantly higher than that of the CIDR treatment (P<0.05). 2. The responses of estrus synchronization treated with Synchromate-B, Veramix and CIDR were 52.9, 72.9 and 75.7%, respectively. Veramix and CIDR treatments on estrous synchronization were significantly higher than the Synchromate-B treatment (P<0.05). Among the estrous synchronized goats, the estrous ovulation rates with Synchromate-B, Veramix and CIDR were 2.11 pm 1.89, 1.35 pm 0.87 and 1.43 pm 0.96, respectively. The estrous ovulation rates of the Synchromate-B treatment were significantly higher than those of the other treatments (P<0.05). 3. The average superovulation rates were 11.76 pm 6.00 and 11.07 pm 6.46 for the PMSG treatment and control groups, showing that there was no PMSG effects for the superovulation treated with CIDR.
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KEYWORD
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Korean native goat, Progestagen, Superovulation, Estrous synchronization
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