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Rumen degradation of straw 1. Untreated and ammonia-treated barley, oat and wheat straw varieties and triticale straw

Published online by Cambridge University Press:  02 September 2010

A. K. Tuah ,
E. Lufadeju ,
E. R. Ørskov  and
G. A. Blackett
A. K. Tuah
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
E. Lufadeju
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
E. R. Ørskov
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
G. A. Blackett
Affiliation:
North of Scotland College of Agriculture, 581 King Street, Aberdeen AB9 1UD
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Abstract

The dry-matter degradation of 19 varieties of barley, 14 varieties of wheat, 11 varieties of oats and one variety of triticale straws, both untreated and ammonia treated were studied using the nylon-bag technique. There were significant differences between the untreated varieties of all the types of cereal straw studied with respect to dry-matter loss (DML) values. When the barley and wheat straws were treated with ammonia, the differences between the varieties were also significant although ammonia treatment tended to improve those with lower values to a greater extent than those with higher values. There were also significant differences between the DML values of the oat straws when they were treated with ammonia but only after 48-h incubation. There was a significant negative relationship between the 48-h DML values of the untreated oat straws and the improvement in the DML values with ammonia treatment (r = −0·65; P < 0·05). Grain yield, straw length and nitrogen concentration had no significant relationship with the DML values of the untreated straws. Barley and oat straws had generally higher DML than the wheat and triticale straws.

Type
Research Article
Information
Animal Production , Volume 43 , Issue 2 , October 1986 , pp. 261 - 269
Copyright
Copyright © British Society of Animal Science 1986

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