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Amino acid requirements of the breeding sow: the dietary lysine requirement during pregnancy

Published online by Cambridge University Press:  26 April 2012

M. A. Sohail ,
D. J. A. Cole  and
D. Lewis
M. A. Sohail
Affiliation:
University of Nottingham School of Agriculture, Sutton Bonington, Loughborough, Leics. LE 12 5RD
D. J. A. Cole
Affiliation:
University of Nottingham School of Agriculture, Sutton Bonington, Loughborough, Leics. LE 12 5RD
D. Lewis
Affiliation:
University of Nottingham School of Agriculture, Sutton Bonington, Loughborough, Leics. LE 12 5RD
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Abstract

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1. Four pregnant sows were used to study lysine requirements by means of the interpretation of values for plasma amino acid and blood urea. Diets containing graded levels of dietary lysine were fed at the rate of 1.82 kg/d.

2. Plasma lysine remained at a low level up to 6.4 g dietary lysine/kg (dry matter basis) and then increased sharply with further increases in lysine intake.

3. Blood urea levels decreased when the dietary lysine content was increased to 6.4 g/kg and then increased at higher dietary lysine concentrations.

4. Both criteria of response indicated that the lysine requirement of the pregnant sow given 1.82 kg diet/d during the later stages of pregnancy does not exceed 10.00 g/d.

Type
Papers on General Nutrition
Information
British Journal of Nutrition , Volume 39 , Issue 3 , May 1978 , pp. 463 - 468
Copyright
Copyright © The Nutrition Society 1978

References

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