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대한생식의학회지 제7권 제1호 2010년
유우(乳牛)의 번식장해(繁殖障害) 조사(調査)
가축개량사업소;가축개량사업소;가축개량사업소;가축개량사업소;
김선환;김기귀;고석권;김경주;,
A Survey on Reproductive Disorders of Dairy Cattes
Kim, Sun-Hwan;Kim, Ki-Gu;Ko, Suk-Gweon;Kim, Kyeong-Ju;
Artificial Breeding Center;Artificial Breeding Center;Artificial Breeding Center;Artificial Breeding Center;
The status of artificial insemination was surveyed by investigating 20796 heads of adult dairy cattle out of 30464 heads at 1649 dairy farms located Seoul and Gyung-Gi and Chung-Cheong province area, and the results are as follows: 1. There were 286 small farms feeding less than 5 heads occupying 17.3% of total farm number, and 1083 medium sized dairy farms feeding between $6{\sim}20$ heads occupying 65.64% and also 280 large dairy farms feeding more than 21 heads occupying 17.06% of total. 2. Population of cow aging from 2 to 6 years were 87.26% and among 20907 heads of dairy cattles which had calved previously 13196 heads had histories of one to four calving 90.40%. 3. The successful conception rate with first A. I. occupied only 53.43% and 92.4% after third A. I. service. The average A. I. frequency for successful conception per/head was 1.8 times. 4. The breeding status was pregnancy 61.72%, uncertain pregnancy 19.39%, and as physiological vacancy 12.48% and reproductive disorders 10.62%. 5. Among 1264 heads of reproductive disorders 856 heads were clue to ovarian diseases and occupied 68.98% of total disorders and uterus diseases 10.64% and repeat breeders occupied 17.64%.
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