家畜生态学报2012，Vol.33Issue(1)：33-36,4.
猪窝产活仔数与初生窝重、21日龄窝重的相关分析
Correlation Analysis between Litter Size and Primary Litter Weight,21-Day Litter Weight in Duroc Pigs
摘要
Abstract
The indexes such as litter size, parity, litter weight at birth, 21-day litter weight of 84 Du-roc sows of new American variety were measured. The correlation and regression analysis of performances and analysis of variance were conducted according to litter size to explore the effect of parity on reproductive performance. The results showed that the difference of litter size , litter weight at birth as well as 21-day litter weight among groups was extremely significant(P<0. 01) , and the difference of litter weight at birth when the number of live piglet was 7, 8 and 9 was insignificant, while other groups' were significantly different or extremely different. The differences of 21d litter weight when the number of live piglet was 7,8,9,10,13 were all insignificant. The correlation analysis was carried out on litter size, parity, litter weight at birth and 21d litter weight. It was shown that there was no correlation between parity and 21d litter weight indexes, while other groups' indexes all reached the extreme level(P<0. 01). The comprehensive analysis revealed that the optimized economic benefits can be achieved when the number of live piglet ranged from 10 to 12.关键词
新美系杜洛克猪/窝产活仔数/初生窝重/21日龄窝重/相关分析Key words
Duroc Pig/ litter size/ litter weight at birth/ 21-day litter weight correlation analysis分类
农业科技引用本文复制引用
郜军伟,吕刚,李新建,常纪亮,范兴兴,彭峰,任广志..猪窝产活仔数与初生窝重、21日龄窝重的相关分析[J].家畜生态学报,2012,33(1):33-36,4.基金项目
国家自然科学基金项目(30571346) （30571346）
