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The utilization of lysine by young pigs from nine protein concentrates compared with free lysine in young pigs fed ad lib

Published online by Cambridge University Press:  09 March 2007

Leibholz Jane
Leibholz Jane
Affiliation:
Department of Animal Husbandry, University of Sydney, Camden, New South Wales 2570, Australia
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Abstract

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1. Pigs (n 195) between 21 and 49 d of age were given a basal diet containing wheat, wheat gluten and cotton-seed meal which was supplemented with one of nine protein concentrates or free L-lysine. The diets were given ad lib. in two experiments.

2. Increasing the lysine content of the diets from 6.9 to 10.1 g/kg increased the weight gains of the pigs from 89 to 317 g/d in the first experiment. In the second experiment the weight gains were increased from 68 to 213 g/d by increasing the lysine content of the diets from 5.9 to 9.5 g/kg.

3. The utilization of lysine from the protein concentrates was compared with the utilization of free L-lysine.

4. The utilization of lysine for weight gain compared with free lysine was 0.86–0.88 for meat meals, 0.95–0.99 for soya-bean meal, 0, 69–0.75 for cotton-seed meal, 0.90 for lupins (Lupinus augustifoh) and 0.99 for milk.

Type
Papers on General Nutrition
Information
British Journal of Nutrition , Volume 55 , Issue 1 , January 1986 , pp. 179 - 186
Copyright
Copyright © The Nutrition Society 1986

References

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