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Amino acid requirements of growing pigs 8. The response of pigs from 50 to 90 kg live weight to dietary ideal protein

Published online by Cambridge University Press:  02 September 2010

H. T. Yen ,
D. J. A. Cole  and
D. Lewis
H. T. Yen
Affiliation:
University of Nottingham School of Agriculture, Sutton Bonington, Loughborough LE12 5RD
D. J. A. Cole
Affiliation:
University of Nottingham School of Agriculture, Sutton Bonington, Loughborough LE12 5RD
D. Lewis
Affiliation:
University of Nottingham School of Agriculture, Sutton Bonington, Loughborough LE12 5RD
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Abstract

The response to dietary lysine when provided as part of an ideal protein was examined in pigs over the range of live weight from 50 to 90 kg. Ninety-six pigs, 32 trios of littermate boars, castrated males and gilts were allocated to eight diets with lysine concentrations of 5·6, 6·2, 7·3, 8·3, 9·3, 10·3, 11·4 and 12·4 g/kg diet and corresponding concentrations of crude protein (CP) from 90 to 186 g/kg diet (all having a digestible energy of 13·38 MJ/kg). Pigs were given food on a restricted scale once daily. With increasing lysine concentration, there was a linear response (followed by a plateau) for growth and carcass characteristics up to dietary lysine concentrations of 91, 7·2 and 8·4 g/kg diet and CP concentrations of 142, 116 and 132 g/kg diet with daily lysine intakes of 22·9, 18·6 and 21·2 g and CP intakes of 357, 290 and 331 g for boars, castrated males and gilts respectively.

Type
Research Article
Information
Animal Production , Volume 43 , Issue 1 , August 1986 , pp. 155 - 165
Copyright
Copyright © British Society of Animal Science 1986

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References

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