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A note on the value of dried citrus pulp and grape marc as barley replacements in calf fattening diets

Published online by Cambridge University Press:  02 September 2010

M. Hadjipanayiotou
Affiliation:
Agricultural Research Institute, Nicosia, Cyprus
A. Louca
Affiliation:
Agricultural Research Institute, Nicosia, Cyprus
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Summary

Two trials with 44 and 30 British Friesian male calves were conducted over a period of 48 and 30 weeks respectively, to study the value of dried citrus pulp and grape marc as substitutes for part of the barley in calf-fattening diets. In each case the diets were fortified with additional crude protein to compensate for the lower digestible crude protein contents of these substitutes.

Including dried citrus pulp at 60% of the concentrate diet had no effect on calf performance or feed intake, and provided additional protein is supplied, citrus pulp appears to compare favourably with barley as an energy source.

Inclusion of grape marc at 15 and 30% of the diet tended to reduce live-weight gain at the higher level and to reduce killing-out percentage and increase feed intake at both levels, resulting in poor feed utilization. Its value as an energy source appears to be about half that of barley.

Type
Research Article
Copyright
Copyright © British Society of Animal Science 1976

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References

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