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A note on the effect of feeding frequency on nitrogen use in growing boars given diets with varying levels of free lysine

Published online by Cambridge University Press:  02 September 2010

I. G. Partridge ,
A. G. Low  and
H. D. Keal
I. G. Partridge
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading RG2 9AT
A. G. Low
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading RG2 9AT
H. D. Keal
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading RG2 9AT
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Abstract

The effect of frequency of feeding on the efficiency of utilization of L-lysine hydrochloride supplements was studied in 30- to 60-kg pigs. The feeding regimes were: (A) once daily, (B) twice daily, (C) four times daily between 08.30 and 20.30 h, (D) four times daily at 6-h intervals. The response criterion was urinary-nitrogen (N) excretion during 5-day periods. Linear improvements in N utilization were seen in response to lysine supplementation: (a) of a mineralized barley diet (4·0 g lysine per kg to levels of 5·0 and 6·0 g/kg (trial 1)), and (b) of a barley-soya diet (5·5 g lysine per kg to levels of 6·8 and 8·1 g/kg (trial 2)). In both trials the efficiency of N use averaged over the three diets was significantly poorer with once-daily feeding than for the other three treatments, which did not differ significantly from each other.

Type
Research Article
Information
Animal Production , Volume 40 , Issue 2 , April 1985 , pp. 375 - 377
Copyright
Copyright © British Society of Animal Science 1985

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References

REFERENCES

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