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The repeatability of maternal performance in inbred, outbred and linecross large white sows

Published online by Cambridge University Press:  02 September 2010

J. W. B. King  and
Z. Gajić
J. W. B. King
Affiliation:
A.R.C. Animal Breeding Research Organisation, West Mains Road, Edinburgh 9
Z. Gajić
Affiliation:
A.R.C. Animal Breeding Research Organisation, West Mains Road, Edinburgh 9
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Summary

Repeatability estimates for various maternal characteristics were calculated for 301 inbred, 150 outbred and 135 linecross Large White sows each with two litters. The estimated repeatabilities did not differ significantly between the three kinds of sow and the arithmetic average of the values obtained were as follows: number of pigs born alive 0·24; number of pigs born dead 0·05; total birth weight of litter 0·25; average individual birth weight 0·41; number of pigs alive at 50 days 0·07; total litter weight at 50 days 0·14; average individual weight at 50 days 0·15.

The linecross sows produced and weaned more pigs than the outbred sows, which in turn performed better than the inbred sows. Changes in performance from the first to the second litter were similar for all three groups of sows.

Type
Research Article
Information
Animal Production , Volume 11 , Issue 1 , February 1969 , pp. 47 - 51
Copyright
Copyright © British Society of Animal Science 1969

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References

REFERENCES

King, J. W. B. 1967. Pig breeding research.Proc. 9th int. Congr. Anim. Prod., Edinb.,1966, pp. 7–16.Google Scholar
Lush, J. L. and Molln, A. E. 1942. Litter size and weight as permanent characteristics of sows. Tech. Bull. U.S. Dept. Agric. No. 836: 40 pp.Google Scholar
McCluno, M. R. 1953. Heritability of productive characters in Duroc swine. Thesis No. 1477, Iowa State Coll., Ames. From abstract in Iowa St. Coll. J. Sci. 1955. 29: 455–56.Google Scholar
Shelby, C. E. 1967. Genetic aspects of the Production Registry Program. J. Anim. Sci. 26: 5–9.CrossRefGoogle Scholar
Swiger, L. A., Harvey, W. R., Everson, D. O. and Gregory, K. E. 1964. The variance of intraclass correlation involving groups with one observation. Biometrics 20: 818–826.CrossRefGoogle Scholar
Taketomi, M., Niwa, T. and Onishi, N. 1953. A statistical consideration on the litter-size in swine, with special reference to its repeatability. Bull. nat. Inst. Agric. Sci. (Chiba) G., No. 7: 147–152.Google Scholar
Urban, W. E., Shelby, C. E., Chapman, A. B., Whatley, J. A. and Garwood, V. A. 1966. Genetic and environmental aspects of litter size in swine. J. Anim. Sci. 25: 1148–1153.CrossRefGoogle Scholar