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Further studies on the effects of the presence or absence of protozoa in the rumen on live-weight gain and wool growth of sheep

Published online by Cambridge University Press:  09 March 2007

S. H. Bird  and
R. A. Leng
S. H. Bird
Affiliation:
Department of Biochemistry and Nutrition, University of New England, Armidale, NSW 2351, Australia
R. A. Leng
Affiliation:
Department of Biochemistry and Nutrition, University of New England, Armidale, NSW 2351, Australia
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Abstract

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1. Lambs were given a diet of oaten chaff-sucrose-fishmeal(48:48:4, w/w) and either 60 (diet A) or 120 (diet B) g urea/kg sucrose in the diet. All animals were defaunated and half were refaunated. Each group of lambs (faunated and defaunated) was then divided into two groups and given diet A or diet B. Feed intake, wool growth and live-weight change were monitored over a 182 d period.

2. The level of urea supplementation had no effect on wool growth or live-weight gain.

3. Defaunated lambs gained live weight at a higher rate (9%, P < 0.06) and grew 37% more wool (P < 0.01) than the lambs with large populations of protozoa in their rumens.

Type
Papers on General Nutrition
Information
British Journal of Nutrition , Volume 52 , Issue 3 , November 1984 , pp. 607 - 611
Copyright
Copyright © The Nutrition Society 1984

References

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