Hostname: page-component-78c5997874-v9fdk Total loading time: 0 Render date: 2024-11-04T19:47:34.783Z Has data issue: false hasContentIssue false
  • English
  • Français

A note on the fertility of hill ewes mated to Finnish Landrace and Border Leicester rams

Published online by Cambridge University Press:  02 September 2010

J. D. Barker  and
R. B. Land
J. D. Barker
Affiliation:
A.R.C. Animal Breeding Research Organisation, West Mains Road, Edinburgh EH9 3JQ
R. B. Land
Affiliation:
A.R.C. Animal Breeding Research Organisation, West Mains Road, Edinburgh EH9 3JQ
Get access

Summary

The litter size and lambing rate of 1531 ewes of British hill breeds which had been mated to Finnish Landrace or Border Leicester rams was found to be independent of breed of ram. It was concluded that Finnish Landrace rams do not have a particular effect on the reproductive performance of ewes to which they are mated.

Type
Research Article
Information
Animal Production , Volume 12 , Issue 4 , November 1970 , pp. 673 - 675
Copyright
Copyright © British Society of Animal Science 1970

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: 471–476.Google Scholar
Land, R. B. 1970a. The number of oocytes present at birth in the ovaries of pure, and Finnish Landrace cross, Blackface and Welsh sheep. J. Reprod. Fert. 21: 517–521.Google Scholar
Land, R. B. 1970b. A relationship between the duration of oestrus, ovulation rate and litter size of the sheep. J. Reprod. Fert. 23: 49–53.Google Scholar
Land, R. B. 1970c. The mating behaviour and semen characteristics of Finnish Landrace and Scottish Blackface rams throughout the year. Anim. Prod. 12: 551–560.Google Scholar
Maijala, K. J. 1966. Causes of variation in litter size of Finn-sheep ewes. 9th int. Congr. Anim. Prod., Edinb., 1966, Scient. Progm. Abstr., Eng ed.: 29.Google Scholar
Newton, J. E. and Betts, J. E. 1968. Factors affecting litter size in the Scottish Halfbred ewe. Pt. II. Superovulation and the synchronisation of oestrus. J. Reprod. Fert. 17: 485–493.Google Scholar
Parker, C. F. 1968. Ram influence on lambing rate, lamb crop percentage and quantity of lamb weaned of Columbia and Targhee ewes. Proc. 2nd Wld Conf. Anim. Prod., College Park, Md, 1968: 437–438.Google Scholar
Turner, H. N. and Young, S. S. Y. 1969. Quantitative Genetics in Sheep Breeding. South Melbourne, Viet.: Macmillan Co. of Australia Pty Ltd. London: Macmillan & Co. Ltd. xviii + 332 pp. [B.]Google Scholar
Wiener, G. 1967. A comparison of the body size, fleece weight and maternal performance of five breeds of sheep kept in one environment. Anim. Prod. 9: 177–195.Google Scholar