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The influence of weaning regime on central testing station performance in pigs

Published online by Cambridge University Press:  02 September 2010

A. J. Webb  and
J. W. B. King
A. J. Webb
Affiliation:
ARC Animal Breeding Research Organisation, West Mains Road, Edinburgh EH9 3JQ
J. W. B. King
Affiliation:
ARC Animal Breeding Research Organisation, West Mains Road, Edinburgh EH9 3JQ
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Abstract

To investigate possible pre-test environmental effects on testing station performance, pigs from a total of 107 litters from two breed types were weaned on one of three treatments: weaning at 3, 5 or 8 weeks of age, with a different creep-feeding regime on each. At 8 to 10 weeks of age, litter groups (usually consisting of two boars, one male castrate and one gilt) were sent to a Meat and Livestock Commission testing station and performance-tested from 27 to 85 kg live weight on twice daily to-appetite feeding.

Weaning treatment significantly affected live weight at 50 days and boar growth rate and feed efficiency on test, but carcass traits were largely unaffected. Boars weaned on the 8-week treatment showed a significant advantage in index score of two-thirds of a standard deviation over those weaned at 3 weeks. A smaller number on the 5-week treatment were intermediate but did not differ significantly from those on the other two. It is concluded that wide variation in the weaning methods of herds sending pigs to a testing station could affect selection decisions. Ways of removing any bias by standardizing weaning methods or by statistical adjustment are discussed.

Type
Research Article
Information
Animal Production , Volume 29 , Issue 2 , October 1979 , pp. 203 - 212
Copyright
Copyright © British Society of Animal Science 1979

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References

REFERENCES

Cuthbertson, A. 1968. PIDA dissection techniques. Proc. Symp. Meth. Carcass Evaluation. Eur. Ass. Anim. Prod., Dublin.Google Scholar
Fowler, V. R. 1967. Body development and some problems of its evaluation. In Growth and Development of Mammals (ed. Lodge, G. A. and Lamming, G. E.), Proc. 14th Easter Sch. agric. Sci., Univ. Nottingham, pp. 195–211. Butterworth, London.Google Scholar
Harvey, W. R. 1968. Instructions for use of LSMLGP (Least-squares and Maximum Likelihood General Purpose Program). Ohio State Univ., Columbus (Mimeograph).Google Scholar
King, J. W. B. 1975. Retarded growth in Hampshire piglets. Livest. Prod. Sci. 2: 69–77.CrossRefGoogle Scholar
King, J. W. B., Curran, M. K., Standal, N., Power, P., Heaney, I. H., Kallweit, E., Schröder, J., Maijala, K., Kangasniemi, R. and Walstra, P. 1975. An international comparison of pig breeds using a common control stock. Livest. Prod. Sci. 2: 367–379.CrossRefGoogle Scholar
Lucas, I. A. M., Calder, A. F. C. and Smith, H. 1959. The early weaning of pigs. VI. The effects of early weaning and various growth curves before 50 lb. live weight upon subsequent performance and carcass quality. J. agric. Sci., Camb. 53: 136–144.CrossRefGoogle Scholar
Pease, A. H. R. 1965. Correlations with three week weights and age at start of test. Publn No. 36/65, Pig Industry Development Authority. Meat and Livestock Commission, Milton Keynes.Google Scholar
Pig Industry Development Authority. 1966. Combined testing. PIDA Report DA. 188. Meat and Livestock Commission, Milton Keynes.Google Scholar
Skjervold, H. and Standal, N. 1964. The influence of prenatal and postnatal pretesting environment on pig testing results. A cross-nursing study on pigs. Acta Agric. scand. 14: 52–58.CrossRefGoogle Scholar
Sieane, D. E. 1972. Meat and Livestock Commission breeding schemes. Proc. 14th Poultry Breeders Roundtable, Birmingham.Google Scholar
Webb, A. J. and King, J. W. B. 1976. Development of a synthetic pig sire line by selection with immigration. 1. Results of selection and heritability estimates. Anim. Prod. 22: 231–244.Google Scholar
White, J. 1966. PIDA's accreditation scheme. In Breeding for Pig Improvement. Proc. Pig. Ind. Dev. Auth. Conf, Brighton.Google Scholar