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The effect of corn silage treated with urea and ammonia on performance of Holstein dairy cows in mid lactation

Published online by Cambridge University Press:  20 November 2017

A. Davtalabzarghi ,
R. Valizadeh  and
A. A. Nasserian
A. Davtalabzarghi*
Affiliation:
Department of animal science, Faculty of Agriculture, Ferdowsi University of Mashhad P.O. Box: 91775-1163, Mashhad, Iran.
R. Valizadeh
Affiliation:
Department of animal science, Faculty of Agriculture, Ferdowsi University of Mashhad P.O. Box: 91775-1163, Mashhad, Iran.
A. A. Nasserian
Affiliation:
Department of animal science, Faculty of Agriculture, Ferdowsi University of Mashhad P.O. Box: 91775-1163, Mashhad, Iran.
*
E-mail: [email protected]
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Extract

Corn silage is a popular feed for dairy cows in Iran. Corn plant as silage produces the highest amount of digestible nutrients per acre after sugarcane and casava. The well-fermented corn silage contains medium to high content of digestible energy but its level of digestible crude protein is usually low. This is the main reason for application of nitrogenous additives such as urea and ammonia during ensiling. This kind of supplementation also increases air stability of the silage after opening. The ammonia-treated silage gives higher content of digestible energy because of the restriction of fungal growth. It has been shown that urea and ammonia treating corn silage increase dry matter intake and milk yield in dairy cows (Huber and Santana 1973). The aim of this study was to investigate the result of these hypothesises in an intensive dairy production.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2004 , 2004 , pp. 168
Copyright
Copyright © The British Society of Animal Science 2004

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References

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