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Some factors affecting the voluntary intake by pigs of diets containing effluent from the ensilage of grass

Published online by Cambridge University Press:  27 March 2009

D. C. Patterson  and
N. Walker
D. C. Patterson
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down, BT26 6DP
N. Walker
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down, BT26 6DP
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Summary

Three experiments were carried out to investigate factors which might affect the voluntary intake of effluents.

Effluent was introduced into the diet of pigs at rates of 25, 50 and 100 g D.M./day, replacing dry meal to maintain a constant amount of dry matter offered. The mean maximum daily intakes of effluent on the three treatments were similar indicating that, within this range, the rate of introduction of effluent had no effect on its potential maximum intake.

When solutions with differing concentrations of effluent dry matter were offered it was found that the intakes at the 20 and 10 g/kg concentrations were progressively lower than when tho concentration was 30 g/kg or higher. This suggested a physical limitation to the intake of effluent at low concentrations. A physiological limit may operate at concentrations of 30 g D.M./kg or higher.

In the third experiment daily air-dry meal allowances of 80, 90, 100 and 110 g/kg W0.75 were offered in addition to an ad libitum supply of effluent. The voluntary intake of effluent dry matter was not significantly affected by tho amount of meal offered and the total amount of dry matter consumed remained virtually constant.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 98 , Issue 1 , February 1982 , pp. 123 - 129
Copyright
Copyright © Cambridge University Press 1982

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