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Effect of feeding a lupin grain supplement on reproductive performance of maiden and mature ewes

Published online by Cambridge University Press:  27 March 2009

F. D. Brien ,
I. A. Cumming  and
R. W. Baxter
F. D. Brien
Affiliation:
Department of Agriculture, Victoria, Animal Research Institute, Werribee, 3030, Australia
I. A. Cumming
Affiliation:
Department of Agriculture, Victoria, Animal Research Institute, Werribee, 3030, Australia
R. W. Baxter
Affiliation:
Department of Agriculture, Victoria, Animal Research Institute, Werribee, 3030, Australia
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Summary

A study was made of reproductive performance in 183 maiden and 218 mature ewes from a single Merino flock either with or without lupin grain supplement (Lupinus angustifolius cv. Uniwhite) at 500 g/head/day from 14 days prior to the introduction of the rams until 12 days post coitus. The ewes were grazed either on irrigated perennial pasture or hay fed on a fallow area. Ovulation rates increased (P < 0·01) in ewes which received the supplement. Insemination rates were not affected by the supplement, although embryo survival was reduced (P < 0·05). Feeding the lupin grain supplement did not increase the number of embryos present at days 28·31 post coitus. Ovulation rate and embryo survival were not influenced by diets of irrigated pasture or hay, although insemination rates of ewes tended to be lower when ewes grazed the irrigated pasture rather than hay.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 89 , Issue 2 , October 1977 , pp. 437 - 443
Copyright
Copyright © Cambridge University Press 1977

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