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Heat treated rapeseed meal for dairy cows

โœ Scribed by Herland, Per Johan


Publisher
John Wiley and Sons
Year
1996
Weight
351 KB
Volume
98
Category
Article
ISSN
0931-5985

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โœฆ Synopsis


Steigerung der Leistung u n d Gewinnung hochwertiger

Nahrungsmittel" irn November 1995 in Wallenhorst.

Heat treated rapeseed meal, processed by the ExPro' technique, and ordinary double low rapeseed meal were compared in a feeding experiment with dairy cows. The heat treatment of the ExPro meal had decreased the effective protein degradation of the rapeseed meal by 26 units from 72% to 46%. Two levels of crude protein of the concentrate were obtained by mixing either 25 or 8% treated and untreated meal with grain. The experiment covered one lactation period. Significant treatment effects were reached both for protein level and protein degradability. At low protein level there were significant higher milk yield and protein production for the cows fed with the heat treated ExPro meal. The reduction of protein degradability in rapeseed meal by heat treatment makes a reduced feed nitrogene input possible without a negative effect on milk production. The use of the heat treated ExPro meal lowers the nitrogene load on the cows and the nitrogene pollution, factors which will have a positive influence on health, fertility and environment. Warmebehandelter Rapsextraktionsschrot fur Milchkuhe. Warmebehandelter Rapsextraktionsschrot, der mit der Expro"-Technik hergestellt wurde, und gewohnlicher senfolarmer Rapsextraktionsschrot wurden in einem Fiitterungsversuch bei Milchkiihen miteinander verglichen. Die Warmebehandlung des ExPro-Schrots verminderte den effektiven Proteinabbau des Rapsextraktionsschrots um 26 Einheiten von 72% auf 46%. Durch das Vermischen von entweder 25 oder 8% behandeltern und unbehandeltem Schrot mit Samenkornern wurden zwei Stufen von RoheiweiR im Kraftfutter erreicht. Das Experiment wurde uber eine Laktationsperiode durchgefuhrt. Durch die Behandlung wurden beachtliche Erfolge erzielt, sowohl in Hinsicht auf den Proteingehalt als auch auf die Proteinabbaubarkeit. Bei einem niedrigen Proteingehalt ergaben sich bedeutend hohere Milchertrage und eine hohere Proteinproduktion bei den Kiihen, die mit dem warmebehandelten ExPro-Schrot gefuttert wurden. Die Ver


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