Hostname: page-component-cd9895bd7-gbm5v Total loading time: 0 Render date: 2024-12-23T14:49:49.414Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of early weaning at about 30 days after farrowing on the reproductive characteristics in gilts and sows

Published online by Cambridge University Press:  27 March 2009

Hirokazu Shimizu  and
Saburo Takeuchi
Hirokazu Shimizu
Affiliation:
Laboratory of Animal Reproduction, Faculty of Agriculture, Tohoku University, Sendai, Japan
Saburo Takeuchi
Affiliation:
Laboratory of Animal Reproduction, Faculty of Agriculture, Tohoku University, Sendai, Japan
Get access Rights & Permissions [Opens in a new window]

Summary

Records have been analysed from a small herd in which early weaning was practised. Piglets were weaned when average weight was 7–8 kg, at about 30 days old. Decreased feeding of sows, followed by a short period of fasting, was practised at weaning.

Mean duration of suckling was 31·5 days and mean interval from weaning to oestrus 6·0 days. 93% of sows conceived to service at the first or second heat period. Mean farrowing interval for all sows was 159·7 days (151·9 days for those holding to the first service). Corresponding annual farrowing frequencies, calculated from these figures, are 2·29 and 2·40.

Litter sizes at birth and at weaning were 10·7 and 9·3; corresponding weights of piglets were 1·74 and 7·99 kg. With increase of litter sequence there was a significant decrease of weaning weights; however, there was also an increase in size of litter weaned. Seasonal changes of piglet weight were also found. Early weaning can be considered a useful way to increase production.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 72 , Issue 2 , April 1969 , pp. 247 - 250
Copyright
Copyright © Cambridge University Press 1969

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

Cunha, T. J. (1957). Swine feeding and nutrition. New York: Intersei Publ. pp. 209–24.Google Scholar
Lynch, G. (1965). An investigation into the interval between weaning and subsequent service of the sow and its coiralation with some reproductive characteristics. Meld. Norg. LandbrHogsk. 44, pp. 47.Google Scholar
Marshall, G. H. A. & Hammond, J. (1952). Fertility and animal breeding. Min. Agric. Fish. Bull. 39, p. 42.Google Scholar
Moody, N. W., Baker, D. S., Speer, V. C. & Hays, V. W. (1967). Reproductive performance of sows hand-mated on the first oestrus after early weaning. J. Anim. Sci. (Abstr.), 26, 1467.Google Scholar
Moody, N. W., Speer, V. C. & Hays, V. W. (1966). Reproductive performance of sows bred during the first oestrus following early weaning. J. Anim. Sci. (Abstr.), 25, 1722.Google Scholar
Morimoto, H., Takahashi, A. & Takahashi, S. (1961). Studies on the synthetic milk for pigs. (In Japanese with English summary.) Bull. natn. Inst. agric. Sci., Tokyo, Ser. G, no. 20, 61–99.Google Scholar
Puyaoan, R. B. & Castillo, L. S. (1963). A study on the effects of weaning pigs at different ages and subsequent reproductive performance of their dams. Philipp. Agric. 47, 32–44.Google Scholar
Self, H. L. & Grummer, R. H. (1958). The rate and economy of pig gains and the reproductive behaviour in sows when litters are weaned at 10 days, 21 days or 56 days of age. J. Anim. Sci. 17, 862–8.CrossRefGoogle Scholar
Shizuoka Prefectural Pig Experiment Station (1967a). Annual Report, no. 12. (In Japanese), pp. 40.Google Scholar
Shizuoka Prefectural Pig Experimental Station (1967b). Rearing and breeding of large breed of swine. Report, no. 14. (In Japanese), pp. 31.Google Scholar
Smidt, D., Scheven, B. & Steinbach, J. (1965). Der Einfluss der Laktation auf die Geschlechtsfunktion bei Sauen. Zuchtungskunde 37, 23–36.Google Scholar
Smith, D. M. (1960). The effect of daily separation of sows from their litters upon milk yield, creep intake and energetic efficiency. N.Z. Jl agric. Res. 4, 235–45.Google Scholar
Wussow, W. & Pfeiffer, H. (1966). Die Verkürzung der Säugezeit eine Massnahme zur Erhöhung der Wurfiblge. Arch. Tierz. 9, 23–36.Google Scholar
Yoshioka, I. & Arai, H. (1964). Present situation and future of raising sows for breeding-economic analysis. (In Japanese.) Chuo-chikusankai, pp. 63.Google Scholar