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Social behaviour of domestic animals VII. Variation in weaning weight in pigs

Published online by Cambridge University Press:  02 September 2010

G. McBride ,
J. W. James  and
G. S. F. Wyeth
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Summary

Regression analyses were made of the inter-relations among weights at day-old, 3 and 8 weeks, teat order, social order and litter size in 41 litters of young pigs.

Birth weight and teat order accounted for 40 % of the variation of 3-week weight within litters. Social rank was strongly influenced by 3-week weight, but not by birth weight or teat order except through their effects on 3-week weight. About 70% of the within-litter variation in 8-week weight was attributable to 3-week weight and social rank. Of the total variation in 8-week weight about 55 % could be explained in terms of the other variables. The effect of litter size on 8-week weight appeared to differ considerably in the Berkshire and Large White pigs used in this study.

On the assumption of a causal sequence in time, the within-litter variation in 8-week weight was partitioned into fractions of 19% due to birth weight, 5 % due to teat order, 29 % due to 3-week weight and 17 % due to social rank.

Type
Research Article
Information
Animal Production , Volume 7 , Issue 1 , January 1965 , pp. 67 - 74
Copyright
Copyright © British Society of Animal Science 1965

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References

REFERENCES

Fisher, R. A., & Yates, F., 1957. Statistical Tables for Biological, Agricultural and Medical Research. Oliver & Boyd, Edinburgh.Google Scholar
James, J. W., & Foenander, F., 1961. Social behaviour studies in domestic animals. I. Hens in laying cages. Aust. J. agric. Res., 12: 1239.CrossRefGoogle Scholar
Kempthorne, O., 1957. An Introduction to Genetic Statistics. John Wiley & Sons, New York.Google Scholar
McBride, G., 1963. The ‘teat order’ and communication in young pigs. Anim. Behav., 11: 53.CrossRefGoogle Scholar
McBride, G., James, J. W., & Hodgens, N. W., 1964. Social behaviour of domestic animals. IV. Growing pigs. Anim. Prod., 6: 129.Google Scholar
Wyeth, G. S. F., & McBride, G., 1964. Social behaviour of domestic animals. V. A note on sucking behaviour in young pigs. Anim. Prod., 6: 245.Google Scholar