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RISS 인기검색어
- 검색키워드
- 저자 : 송주엽(J . Y . Song) (검색결과 3 건)
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나종삼,김종승,백동훈,최호성,송주엽,오하식 ( J . S . Na,J . S . Kim,D . H . Baik,H . S . Choi,J . Y . Song,H . S . Oh ) 한국축산학회 1998 한국축산학회지 Vol.40 No.4
This study was carried out to investigate environmental effects on certain economically important genetic traits in swine. Data from the 12,402 performance records obtained at the Korean Second Swine Test Station from the year 1990 through 1997 were used for the study. The statistical analyses were made on effects of breed, sex, farm region, parity, litter size, year and season of birth. The average daily gain of Duroc was superior to those of Landrace and Yorkshire. The backfat thickness of Duroc was thicker than those of the other two breeds (P$lt;0.01). The selection indices in Landrace and Yorkshire were bigger than those of Duroc in both ways of index calculation. The effects of birth year on backfat thickness, feed efficiency and the days to 90㎏ exerted gradual progress(P$lt;0.01). Most of the growth traits of pigs born in fall or winter were superior to those of pigs born in spring or summer(P$lt;0.01). The effects of litter size showed significant differences in all of the traits studied.
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백동훈(D . H . Baik),최호성(H . S . Choi),송주엽(J . Y . Song),손삼규(S . K . Son),오하식(H . S . Oh) 한국축산학회 1995 한국축산학회지 Vol.37 No.6
To investigate the genetic and environmental effects on the economically important traits in swine, data on 4.782 pigs tested from 1990 through 1993 at a test station were analysed. The statistical model applied for the analysis was consisted of sex, breed, purity, year and season of birth as main effects with the interaction of the year×season. Males bowed greater duly gain by about 50g, thiner backfat, and reached 90㎏ body weight earlier than females. By computing with the game index, the males showed greater values than females. Duroc showed faster growth, and thicker backfot, while Yorkshire was superior in feed conversion to the other two breeds. The backfat thickness was smaller in the pigs of 2nd parity, but the clays to reach 90㎏ body weight tends to be shorter in the pigs of 3rd parity. The pig bom in toll or winter grew faster than those born in spring or summer season. The year effect on most of the traits showed gradual progress representing the results of the selection and/or replacement effects by the parent stock imported from many foreign countries over a long, period.
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최호성(H . S . Choi),백동훈(D . H . Baik),신원집(W . J . Shin),송주엽(J . Y . Song),나종삼(C . S . Na) 한국축산학회 1996 한국축산학회지 Vol.38 No.1
The records of 4,727 head of Hanwoo(Korean Native Cattle) cows were used to estimate the effects of the location, generation, pregnancy phase, year of birth and season of birth on body measurements at 24 months of age. Least squares means and standard errors of withers height, rump height, body length, chest girth, chest depth, chest width, rump length, rump width, thud width and hipbone width at 24 months of age were 118.93±0.84㎝, 121.00±0.73㎝, 134.88±0.80㎝, 166.12±1.42㎝, 61.9±90.58㎝, 36.48±0.83㎝, 45.46±0.50㎝, 40.08±0.47㎝, 37.21±0.55㎝ and 22.08±0.48㎝, respectively. The effects of the locations were highly significant on all of the body measurements and those of the generations were significant on rump length and rump width. The effect of the phase of pregnancy was significant on withers height, chest girth, chest depth, chest width, rump width and thurl width and that of the birth year was significant on all of the body measurements except withers height. The effect of the birth season was significant on withers height, rump height, body length, chest girth, rump length and hipbone width.
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