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Energy values in pig nutrition:3. The digestible and metabolizable energy content of barley, wheat, maize, oats and rye

Published online by Cambridge University Press:  27 March 2009

J. Wiseman ,
D. J. A. Cole  and
D. Lewis
J. Wiseman
Affiliation:
University Of Nottingham School Of Agriculture, Sutton Bonington, Loughborough, Leics., LE12 5RD
D. J. A. Cole
Affiliation:
University Of Nottingham School Of Agriculture, Sutton Bonington, Loughborough, Leics., LE12 5RD
D. Lewis
Affiliation:
University Of Nottingham School Of Agriculture, Sutton Bonington, Loughborough, Leics., LE12 5RD
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Summary

The digestible energy (DE) and metabolizable energy (ME) content of eight samples of barley, eight of wheat, four of maize and two each of oats and rye were determined using growing gilts. The DE content of barley ranged from 15·35 to 15·89 MJ/kg D.M., from 15·15 to 16·42 MJ/kg D.M. for wheat and from 16·05 to 16·47 MJ/kg D.M. for maize. DE values for the two oat samples were 12·48 and 12·74 MJ/kg D.M. and 15–04 and 15–47 MJ/kg D.M. for the two rye samples. There was a significant correlation between DE and ME:

ME (MJ/kg D.M.) = 0·050 + 0·965 DE: r = 0·99; P < 0·001.

The ratio ME/DE was significantly influenced by crude-protein content:

ME/DE = 100–0·254 CP%: r = –0·77; P < 0·001.

ME values were also corrected to zero nitrogen retention (MEno) and to 30% nitrogen retention (MEN30). The effect of such corrections was expressed as MEN0/ME and MEN30/ME. Values thus obtained were 0·98 and 1·00 respectively for the pooled values for all cereals.

The data indicated that there was unlikely to be significant variation in the DE content of samples of the same cereal species, selected from commercial sources within the U.K. when evaluated under standardized experimental conditions.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 98 , Issue 1 , February 1982 , pp. 89 - 97
Copyright
Copyright © Cambridge University Press 1982

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