【摘要】 利用相关和通径分析的原理与方法,探讨了杜洛克猪断奶窝重与产仔数、产活仔数、初生窝重、初生个体重、20日龄仔猪数、20龄窝重以及60日龄仔猪数等7个性状间的相关性。结果表明,60日龄仔猪数、20日龄窝重和初生窝重,是影响断奶窝重的重要因素。今后在杜洛克猪的选育中,应将这3个性状作为主攻目标,搞好饲养管理,以利养猪生产的发展。更多还原

【Abstract】 The mutual relationship among weaning weight of litter, num, ber born, litter size, litter weight at birth, birth weight, 20—day litter size-20—day litter wight and 60—day litter size of Duroc pigs were studied by using the principle and system of correlation and passage analysis. Results show that 60—day litter size, 20—day litter weight and litter weight at birth are important factors influencing weaning weight of litter. In the selection and cultivation of Duroc pigs, the factors should be looked upon as the main objective for assiduous study to improve feeding and management for the development of swine production.更多还原