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Sow service in lactation: an analysis of data from one herd

Published online by Cambridge University Press:  02 September 2010

A. M. Petchey  and
G. M. Jolly
A. M. Petchey
Affiliation:
North of Scotland College of Agriculture, 581 King Street, Aberdeen AB9 1UD and ARC Unit of Statistics, Edinburgh University, The King's Buildings, Edinburgh EH9 3JZ
G. M. Jolly
Affiliation:
North of Scotland College of Agriculture, 581 King Street, Aberdeen AB9 1UD and ARC Unit of Statistics, Edinburgh University, The King's Buildings, Edinburgh EH9 3JZ
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Abstract

Observations were made on a pig herd where sow service in lactation had been practised for 2 years. Sows and their litters were grouped and a boar later introduced. Of the 49% of sows mated in lactation 78% conceived. Sow and litter data were subjected to multiple regression analyses which indicated that lactational oestrus was more likely to occur for sows farrowing at the end of the calendar year, and for sows with smaller litter sizes. Sows mated in lactation showed a smaller weight change from the end of the previous pregnancy to weaning than those first showing oestrus after weaning. It is suggested that these weight changes in lactation and the seasonal relationship to lactation oestrus may be related to weight gain achieved by the sow in the previous pregnancy. Sows mated early in lactation had piglets with lower weaning weights and sows mated in late lactation had greater weaning weights than piglets whose dams showed oestrus after weaning.

Type
Research Article
Information
Animal Production , Volume 29 , Issue 2 , October 1979 , pp. 183 - 191
Copyright
Copyright © British Society of Animal Science 1979

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References

REFERENCES

Baker, D. H., Becker, D. E., Norton, H. W., Sasse, C. E., Jensen, A. H. and Harmon, B. G. 1969. Reproductive performance and progeny development in swine as influenced by feed intake during pregnancy. J. Nutr. 97: 489–495.Google Scholar
Cole, D. J. A., Brooks, P. H. and Kay, R. M. 1972. Lactational anoestrus in the sow. Vet. Rec. 90: 681–683.Google Scholar
Cole, D. J. A., Varley, M. A. and Hughes, P. E. 1975. Studies in sow reproduction. 2. The effect of lactation length on the subsequent reproductive performance of the sow. Anitn. Prod. 20: 401–406.CrossRefGoogle Scholar
Corteel, J. M., Signoret, J. P. and Du Mesnil Du Buisson, F. 1964. [Seasonal variation i n the reproduction of the sow and factors favouring temporary anoestrus.] 5th int. Congr. Anim. Reprod. AI, Trento, Vol. 3, pp. 536–540.Google Scholar
Crighton, D. B. 1961. Pig nutrition with special reference to early weaning. M.Sc. Thesis, Univ. Edinburgh.Google Scholar
Crighton, D. B. 1968. The induction of oestrus and ovulation during lactational anoestrus of the sow. 6th int. Congr. Reprod. AI, Paris, pp. 1415–1417.Google Scholar
Crighton, D. B. 1970. The induction of pregnancy during lactation in the sowj the effects of a treatment imposed at 21 days of lactation. Anim. Prod. 12: 611–617.Google Scholar
Eames, T. J. 1964. Service while suckling. Pig Fmg 12: 39.Google Scholar
Epstein, H. and Kadmon, S. 1969. Physiological and economic feasibility of hormonally induced ovulation in lactating Large White sows. J. agric. Sci., Camb. 72: 365–370.Google Scholar
Heitman, H. Jr, and Cole, H. H. 1956. Further studies in the induction of estrus in lactating sows with equine gonadotrophin. J. Anim. Sci. 15: 970–977.Google Scholar
Lodge, G. A. 1971. Quantitative aspects of nutrition in pregnancy and lactation. In Pig Production. Proc. 18th Easter Sch. Univ. Nottingham, (ed. Cole, D. J. A.), pp. 399–416. Butterworth, London.Google Scholar
Lodge, G. A., Elsley, F. W. H. and MacPherson, R. M. 1966. The effects of level of feeding of sows during pregnancy. I. Reproductive performance. Anim. Prod. 8: 29–38.Google Scholar
Mitić, N., Bokorov, T. and Srécković, A. 1966. [The effect of the management of sows during lactation on oestrus and reproduction.] Arh. poljopr. Nauke 19: 3–14.Google Scholar
Moody, N. W. and Speer, V. C. 1971. Factors affecting sow farrowing interval. J. Anim. Sci. 32: 510–514.Google Scholar
Petchey, A. M., Dodsworth, T. L. and English, P. R. 1978. The performance of sows and litters penned individually or grouped in late lactation. Anim. Prod. 27: 215–221.Google Scholar
Phelps, A. 1969. Batched sows served while suckling. Pig Fmg 17: 46–47.Google Scholar
Rowlinson, P., Boughton, H. G. and Bryant, M. J. 1975. Mating of sows during lactation: observations from a commercial unit. Anim. Prod. 21: 233–241.Google Scholar
Smith, D. M. 1961. The effect of daily separation of sows from their litters upon milk yield, creep intake, and energetic efficiency. N.Z. Jl. agric. Res. 4: 232–245.Google Scholar
Svajgr, A. J., Hays, V. W., Cromwell, G. L. and Dutt, R. H. 1974. Effect of lactation duration on reproductive performance of sows. J. Anim. Sci. 38: 100–105.Google Scholar