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KMID : 0900920000240010077
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Korean journal of Animal Reproduction
2000 Volume.24 No. 1 p.77 ~ p.82
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Studies on the Ultrasound-guided Transvaginal Retrieval of Oocytes in Korean Native, Hanwoo Heifers I. Characteristics of Hanwoo Ovary during the Estrous Cycle
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Yang B.-S.
Seong Hwan-Hoo
Cho Sung-Gun
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Abstract
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This study was conducted to establish the methods of ultrasound-guided transvaginal retrieval of oocytes (ovum pick-up) in Korean native, Hanwoo Heifers. To obtain the basic data about Hanwoo, the size of ovaries in luteal and follicular phases were measured and the number of follicles in ovaries during the estrus cycle was counted by using ultrasound. And to determine the effective anesthetic to Hanwoo, various mixture of anesthetic compounds, Rompun(equation omitted), lidocaine, Monzal(equation omitted), and Domosedan(equation omitted), were treated. The size of Hanwoo ovaries were not significant differently between luteal and follicular phases. The number of medium and small follicles were peak on day 3 and 12 of the estrous cycle, and this result suggested that Hanwoo has 2 follicular growth waves per estrus cycle. The most effective anesthetic method was intramuscular injection of a.3m! Rompun(equation omitted), epidural injection of 5mell lidocaine and sprayed cervix by 2mell lidocaine.
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KEYWORD
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Anesthetic method, Ovarian size, Folliclular wave, Hanwoo
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