分娩胎次及季节对法系皮特兰母猪繁殖性能的影响

Study on Effects of Parity and Farrowing Season on Reproductive Performance of Pietrain Sows

研究了不同胎次及产仔季节对法系皮特兰母猪繁殖性能的影响。结果表明,分娩胎次对皮特兰母猪的健仔数、死胎数、产活仔数、死仔数、总产仔数、出生窝重、21日龄断奶母仔数、21日龄断奶总仔猪数、21日龄断奶窝重、哺乳成活率影响显著或极显著,对配种情期、怀孕天数、寄入仔猪数、寄出仔猪数、21日龄断奶公仔数影响不显著。产仔季节对皮特兰母猪的配种情期、怀孕天数、健仔数、产活仔数、总产仔数、出生窝重、21日龄断奶总仔猪数、21日龄断奶窝重影响显著或极显著,对产仔胎次、木乃伊数、死胎数、死仔数、寄入仔猪数、寄出仔猪数、21日龄断奶公仔数、21日龄断奶母仔数、哺乳成活率影响不显著。

The effects of different parities and farrowing seasons on reproductive performance of Pietrain sows were studied. The results showed that the effects of parity on the number of healthy litter,dead fetus,the live litter size,number of born dead,total number born,litter weight at birth,female number of weaning at 21 days,total number of weaning at 21 days,litter weight at 21 days and survival rate of suckling were significant or very significant. The effects of parity on mating period,pregnancy period,number of adopted litter,number of sent litter,and male number of weaning at 21 days were not significant. The effects of farrowing season on mating period,pregnancy period,number of healthy litter,the live litter size,total number born,litter birth weight,total number of weaning at 21 days,and litter weight at 21 days were significant or very significant. The effects of farrowing season on delivered birth,number of mummy,dead fetus,number of born dead,number of adopted litter,number of sent litter,male number of weaning at 21 days,female number of weaning at 21 days,and the survival rate of suckling were not significant.