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A note on haemoglobin type and reproductive performance of ewes grazing oestrogenic pastures

Published online by Cambridge University Press:  02 September 2010

S. K. Walker ,
J. M. Obst ,
D. H. Smith ,
G. P. Hall ,
P. F. Flavel  and
R. W. Ponzoni
S. K. Walker
Affiliation:
Department of Agriculture, Adelaide, South Australia 5001, Australia
J. M. Obst
Affiliation:
Department of Agriculture, Adelaide, South Australia 5001, Australia
D. H. Smith
Affiliation:
Department of Agriculture, Adelaide, South Australia 5001, Australia
G. P. Hall
Affiliation:
Department of Agriculture, Adelaide, South Australia 5001, Australia
P. F. Flavel
Affiliation:
Department of Agriculture, Adelaide, South Australia 5001, Australia
R. W. Ponzoni
Affiliation:
Department of Agriculture, Adelaide, South Australia 5001, Australia
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Abstract

Field data were analysed in an attempt to identify factors contributing to differences between haemoglobin types n i the proportion of ewes lambing per ewe exposed to the ram in flocks grazing oestrogenic pastures. The number of ewes mated and the proportion of ewes failing to conceive to first service per ewe exposed to the ram were analysed. Neither was found to significantly differ between matings of different haemoglobin type. It is concluded that differences in reproductive performance between haemoglobin types could possibly result from differences in embryo survival.

Type
Research Article
Information
Animal Production , Volume 32 , Issue 2 , April 1981 , pp. 223 - 224
Copyright
Copyright © British Society of Animal Science 1981

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References

REFERENCES

Arora, C. L., Acharya, R. M. and Kakar, S. N. 1971. A note on the association of haemoglobin types with ewe and ram fertility and lamb mortality in Indian sheep. Anim. Prod. 13: 371–373.Google Scholar
Meyer, H., Lohse, B. and Groning, M. 1967. [A contribution to haemoglobin and blood potassium polymorphism in the sheep.] Z. Tierziicht. ZüchtBiol. 83: 340–357.CrossRefGoogle Scholar
Walker, S. K., Obst, J. M., Smith, D. H., Hall, G. P., Flavel, P. F. and Ponzoni, R. W. 1979. Haemoglobin type and reproductive performance of sheep grazing oestrogenic pastures. Anim. Prod. 29: 271–276.Google Scholar