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대요크셔종과 랜드레이스종간 상반교잡이 돼지의 복당산자수와 복당체중에 미치는 효과
박영일(Y . I . Park),이수찬(S . C . Lee),김성훈(S . H . Kim) 한국축산학회 1995 한국축산학회지 Vol.37 No.5
The reciprocal crosses between Large Yorkshire and Landrace were compared for the litter size and litter weight on the basis of the data from 4,250 litters of pigs furrowed at the S. Swine Breeding Farm from January, 1986 to June, 1993. The Y×L cross produced by Landrace darns was significantly heavier than the L×Y cross produced by Large Yorkshire dams by 1.61±0.18 ㎏ for the litter weight at birth and by 5.17±0.64 ㎏ for the litter weight at 3 weeks. The Y×L cross had larger litter size at 3 weeks of age by 0.18±0.09 than the L×Y cross, but the difference between the reciprocal cross was statistically insignificant for the litter size at birth. The superiority of Y×L cross over the L×Y cross in the litter weight at birth was significantly reduced in the 9th parity and later as compared to other parities, which reflected the significant interaction between reciprocal crossing arid parity for this trait. The effect to of parity, year of birth and month of birth were also estimated.