Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-23T06:54:24.127Z Has data issue: false hasContentIssue false
  • English
  • Français

Lactational oestrus in the sow. 3. The Influence of feeding level upon the occurrence of a fertile oestrus in lactating sows

Published online by Cambridge University Press:  02 September 2010

P. Rowlinson  and
M. J. Bryant
P. Rowlinson
Affiliation:
Department of Agriculture and Horticulture, University of Reading, Earley Gate, Reading RG6 2AT
M. J. Bryant
Affiliation:
Department of Agriculture and Horticulture, University of Reading, Earley Gate, Reading RG6 2AT
Get access

Abstract

Sixty-six multiparous hybrid Camborough female pigs and their litters were housed in groups of five or six at day 20 post partum. A boar was added to each group on day 21. Four groups (a total of 22 sows) were fed to appetite (TA), to requirement (R) or to 0·70 of requirement (RO·70). Average daily sow food intakes were 8·2, 61 and 4·5 kg for TA, R and RO·70 respectively. Significant differences occurred in live-weight changes between grouping and weaning (TA>R>RO·70; P<0·001). TA sows were heavier at weaning than either R or RO·70 sows (P< 0·001).

Oestrus occurred during lactation in 0·68, 0·73 and 0·18 of sows, on average 11·3, 13·4 and 8·0 days following grouping respectively, for TA, R and RO·70 sows but these differences were statistically non-significant. The average non-return rate at day 21 was 0·69, with no differences between treatments.

Type
Research Article
Information
Animal Production , Volume 35 , Issue 1 , August 1982 , pp. 49 - 53
Copyright
Copyright © British Society of Animal Science 1982

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Agricultural Research Council. 1967. The Nutrient Requirements of Farm Livestock. No. 3, Pigs. Agricultural Research Council, London.Google Scholar
Crighton, D. B. 1971. Lactational anoestrus and the effects on lactation of the induction of varying levels of ovarian and uterine activity. In Lactation (ed. Falconer, I. R.), pp. 105–122. Butterworth, London.Google Scholar
Eames, T. J. 1964. Service while suckling. Pig Fmg 12 (11): 39.Google Scholar
Elsley, F. W. H., MacPherson, R. M. and McDonald, I. 1968. The influence of intake of dietary energy in pregnancy and lactation upon sow productivity. J. agric. Sci., Comb. 71:215–222.CrossRefGoogle Scholar
Gadd, J. 1969. Ideas worth watching. Pig Fmg 27 (12): 24–25.Google Scholar
Hitchcock, J. P., Sherritt, G. W., Gobble, J. L. and Hazlett, V. E. 1971. Effect of lactation feeding level of the sow on performance and subsequent reproduction. J. Anim. Sci. 33: 30–34.CrossRefGoogle ScholarPubMed
Kirkwood, R. N. and Hughes, P. E. 1980. A note on the efficacy of continuous y. limited boar exposure on puberty attainment in the gilt. Anim. Prod. 31: 205–207.Google Scholar
Petchey, A. M. and Jolly, G. M. 1979. Sow service in lactation: an analysis of data from one herd. Anim. Prod. 29: 183–191.Google Scholar
Phelps, A. 1969. Batched sows served while suckling. Pig Fmg 17 (3): 46–47Google 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
Rowlinson, P. and Bryant, M. J. 1977. The effect of short-term nutrition on the occurrence of lactational oestrus in sows. Anim. Prod. 24: 140 (Abstr.).Google Scholar
Rowlinson, P. and Bryant, M. J. 1981. Lactational oestrus in the sow. 1. The effect of the interval between farrowing and grouping on the incidence and timing of lactational oestrus in sows. Anim. Prod. 32: 315–323.Google Scholar
Rowlinson, P. and Bryant, M. J. 1982. Lactational oestrus in the sow. 2. The influence of group-housing, boar presence and feeding level upon the occurrence of oestrus in lactating sows. Anim. Prod. 34: 283–290.Google Scholar