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A study of subclinical worm infestation in sheep: part III. The effect on wool production

Published online by Cambridge University Press:  27 March 2009

C. R. W. Spedding  and
T. H. Brown
C. R. W. Spedding
Affiliation:
The Grassland Institute, Hurley, Berks
T. H. Brown
Affiliation:
The Grassland Institute, Hurley, Berks
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Extract

1. The results of five experiments, comparing the wool production of worm free and infected sheep, are described.

2. Worm-free sheep produced (a) 12·0–38·8% higher total fleece weights and (b) 17·2–43·2% more clean, dry wool per unit area than infected sheep. None of the infestations was higher than occurs naturally in the field, but the greatest effects were associated with a low level of nutrition.

3. It is suggested that the precise effect of worm infestation on wool production will depend upon the age of the host when first infected, the size of the infestation and the rate of wool growth at the time when the infestation is at maximum.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 49 , Issue 2 , August 1957 , pp. 229 - 233
Copyright
Copyright © Cambridge University Press 1957

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References

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