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Low-glucosinolate rapeseed meal as a protein source for milk production

Published online by Cambridge University Press:  22 November 2017

Isobel Vincent  and
R. Hill
Isobel Vincent
Affiliation:
The Royal Veterinary College, Boltons Park, Potters Bar, Herts. EN6 1NB
R. Hill
Affiliation:
The Royal Veterinary College, Boltons Park, Potters Bar, Herts. EN6 1NB
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Extract

Low-glucosinolate rapeseed meal (<20 μmol/g) is likely to replace the high-glucosinolate meal currently produced in the UK, and in this experiment the use of low-glucosinolate rapeseed meal (RSM) as the sole protein supplement in a compound feed for milk production in cows was assessed. There were three compound concentrate feeds of similar energy and protein content, 0% RSM (group A), 15% RSM (B) and 30% RSM (C). The additional protein in diets A and B was provided as soyabean meal (SBM).

Eighteen Friesian cows were divided into three groups, balanced with regard to previous yield and number of lactations, and three weeks after calving were given one of the compound feeds in a 3x3 changeover experiment; each of the three feeding periods was four weeks. Barley meal was given as a parlour feed, 1 kg air dry at each milking, and the compound concentrate and grass silage were given at Broadbent-Calan gates in quantities related to expected milk yield.

Type
Manipulation of Composition and Quality of Animal Products
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1988 , March 1988 , pp. 76
Copyright
Copyright © The British Society of Animal Production 1988

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