The Influence of Three-Week Weight on Eight-Week Weight of Pigs Weaned at Three Weeks of Age1

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Abstract
The growth data of 919 spring-farrowed pigs were studied to determine the influence of 3-week weight on 8-week weight, when pigs are weaned at 3 weeks of age. The analysis of variance of 8-week weights of pigs grouped by breed, sex and year resulted in significant differences in 8-week weights of pigs among breeds. The correlation coefficients between 3-week and 8-week weights indicated that weight at 3 weeks of age is very important in determining 8-week weight. Linear regression of 8-week weight on 3-week weight showed that for each additional pound of pig weight at 3 weeks an increase of approximately 2.4 lb. in 8-week weight may be expected.

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