Hostname: page-component-76fb5796d-wq484 Total loading time: 0 Render date: 2024-04-26T07:47:17.106Z Has data issue: false hasContentIssue false
  • English
  • Français

The performance of Finn-Dorset sheep allowed to mate four times in two years

Published online by Cambridge University Press:  02 September 2010

R. B. Land  and
T. H. McClelland
R. B. Land
Affiliation:
A.R.C. Animal Breeding Research Organisation, West Mains Road, Edinburgh EH9 3JQ
T. H. McClelland
Affiliation:
A.R.C. Animal Breeding Research Organisation, West Mains Road, Edinburgh EH9 3JQ
Get access

Summary

Finn-Dorset females were allowed to mate on four occasions during a period of 2 years. Those over 2 years old at the start of the experiment carried an average of three pregnancies giving birth to an average of 5·8 lambs per ewe. The proportion of ewes lambing was reduced from 93 to 32% by the occurrence of lambing 6 months previously, but litter size was unaffected either by this or by lactation at the time of mating. The mean live weight of male lambs reared as twins was 23·5 kg at 12 weeks, and 36·7 kg at slaughter (mean age 19·7 weeks, killing-out percentage 46·4%).

Type
Research Article
Information
Animal Production , Volume 13 , Issue 4 , November 1971 , pp. 637 - 641
Copyright
Copyright © British Society of Animal Science 1971

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

Donald, H. P. and Read, J. L. 1967. The performance of Finnish Landrace sheep in Britain. Anim. Prod. 9: A11–A16.Google Scholar
Hafez, E. S. E. 1952. Studies on the breeding season and reproduction in the ewe. Part I. The breeding season in different environments. Part II. The breeding season in one locality. J. agric. Sci., Camb. 42: 189–231.CrossRefGoogle Scholar
Hunter, G. L. 1968. Increasing the frequency of pregnancy in sheep. Anim. Breed. Abstr. 36: 347–378, 533-553.Google Scholar
Land, R. B. 1971. The incidence of oestrus during lactation in Finnish Landrace, Dorset Horn and Finn-Dorset sheep. J. Reprod. Fert. 24: 345–352.CrossRefGoogle ScholarPubMed
Maijala, K. 1966. Causes of variation in litter size of Finn-sheep ewes. 9th Int. Congr. Anim. Prod., Edinb., 1966, Scient. Progm Abstr., English Ed. p. 29.Google Scholar
Self, H. L. and Grummer, R. H. 1958. The rate and economy of pig gains and the reproductive behaviour in sows when litters were weaned at 10 days, 21 days or 56 days of age. J. Anim. Sci. 17: 862–868.CrossRefGoogle Scholar