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RISS 인기검색어
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- 저자 : 박주완(J . W . Park) (검색결과 1 건)
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김낙환(N . H . Kim),박주완(J . W . Park),정영철(Y . C . Jung),박영일(Y . I . Park) 한국축산학회 1992 한국축산학회지 Vol.34 No.3
Three different crosses, Y × L, D × YL and DY × YL were performance tested to compare the body weights at different ages, average daily gains, feed effiency, dressing percent, carcass length, backfat thickness, marbling score, lean meat percent and growth pattern. A total of 101 barrows and gilts were tested to an average final weight of 109 ㎏. The pigs were allowed free access to creep feed from 10 days of age and were full fed from weaning at 25 days to the final weight. Average daily gains and feed effiency were best in D × YL, followed in rank by DY × YL and Y × L. The body weight at 32, 70, 90, 110, 130 and 150 days of age were highest in D × YL. The lower average daily gains, poor feed effiency and smaller body weights of Y × L at different ages as compared with D × YL and DY × YL were considered to be due mainly to the difference in level of maternal heterosis. The Y × L had higher dressing percent and lean meat percent, longer carcass and thinner backfat than the other two crosses. The DY × YL tended to have slightly more intra-muscular fat. The equation derived to estimate the growth curve was Log_e W = 47.5327 - 34.3029 × LogeD + 8.2993 × (Log_eD)² - 0.6326 × (Log_eD)³ (R²= 0.9718) for Y × L barrows, Log_e W=0.1764 + 0.1284 × (Log_eD)² - 0.0000002 × D³ + 0.0123 × D (R² = 0.9836) for D × YL barrows, Log_e W = 0.1764 + 0.0123 × D - 0.0000002 × D³ + 0.1284 × (Log_eD)² (R² = 0.9851) for DY × YL barrows and Log_e W = 25.8570 - 19.4688 × Log_e D + 4.9968 × (Log_eD)² - 0.3920 × (Log_e D)³ (R² = 0.9903) for DY × YL gilts.
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