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Studies on the nutritive value of the diet selected by grazing sheep VII. A note on hand plucking as a technique for estimating dietary composition

Published online by Cambridge University Press:  02 September 2010

J. P. Langlands
J. P. Langlands
Affiliation:
C.S.I.R.O., Pastoral Research Laboratory, Armidale, N.S.W. 2350, Australia
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Summary

The digestibility and N contents of samples collected by oesophageally-fistulated sheep and by hand plucking were compared. Hand plucking overestimated nutritive value at high levels of digestibility and N content, and underestimated nutritive value when this was low. The differences between fistula and hand-plucked samples varied between pastures. Precision was increased when samples were combined between operators.

Type
Research Article
Information
Animal Production , Volume 19 , Issue 2 , October 1974 , pp. 249 - 252
Copyright
Copyright © British Society of Animal Science 1974

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References

REFERENCES

Edlefsen, J. L., Cook, C. W. and Blake, J. T. 1960. Nutrient content of the diet as determined by hand plucked and esophageal fistula samples. J. Anitn. Sci. 19: 560–567.CrossRefGoogle Scholar
Langlands, J. P. 1967. Studies on the nutritive value of the diet selected by grazing sheep. II. Some sources of error when sampling oesphageally fistulated sheep at pasture. Anim. Prod. 9: 167–175.Google Scholar
Tilley, J. M. A. and Terry, R. A. 1963. A two-stage technique for the in vitro digestion of forage crops. J. Br. Grassld Soc. 18: 104–111.CrossRefGoogle Scholar