摘要
本文分析了某猪场１９９３年３月到１９９４年３月之间１７２２胎窝产仔数，夏季（１９９３年６月至９月份）配种所产仔猪数显著低于其它月份（Ｐ＜０．０５）。母猪配种时期气候因素如平均日照、温度、相对湿度和风速与窝产仔猪数的相关系数分别为－０．５１６，－０．７７５，－０．２８１，－０．７５１。用通径分析法对以上相关系数及各气候因子间的相关系数进行剖分，求出以上各气候因子对窝产仔猪数的通径系数分别为０，５０７，－０．８７１，０．５１５和－０．５１２。从通径系数与相关系数得出各气候因子影响窝产仔数的决定系数，日照、温度、湿度和风速对产仔数的决定系数分别为０．２５７、０．７５９、０．２６５和０．２６２。因此配种时期温度对产仔数的影响最为重要。
Total of 1722 litters of sows mated between March 1993 and March 1994 were analysed. The average littersize of sows mated in summer months(June 10 September,1993)was significantly(p<0.05)lower than in othermonths.Mothly averages of daily average sun shine Period,temperature,relative humidity and wind speed correlatedstrongly with litter size of sows mated in respective months,with the correlation coefficients of -O. 516,-0.775,-0.281and-0.751.The correlation coefficients between the climatic factors and between clamitic factors and litter size weresubjected to path analysis;The path coefficients of climatic factors to litter size were 0.507,-0.871 ,0515 and O. 512for sun shine period,temperature, relative humidity and wind speed respectively.The determining coefficient of sunshine period,temperature,relative humidity and wind speed to litter size were 0.257,0.759,0.265 and 0.262.There-fore temperature around mating exerted the strongest influence over the subsequent litter size.
出处
《广东畜牧兽医科技》
1995年第4期8-12,共5页
Guangdong Journal of Animal and Veterinary Science
