Protein evaluation methods and systems in ruminants- Overview

Published on: 11/04/2013
Author/s : Umesh Sontakke, Sonali Prusty, S.S. Kundu and Goutam Mondal, Dairy Cattle Nutrition Division National Dairy Research Institute, Karnal (India)

Balanced energy and protein feeding to animal is essential for optimum production from animals and low methane, nitrogen excretion into environment. Balancing diets for crude protein without taking in account protein quality or rumen degradability often led to overfeeding of nitrogen and less than optimal production. So various countries Viz. Europe, North America, and Australia developed their ow...

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November 4, 2013
This is a clear overview of principles to estimate the protein value of feeds for ruminants. As an addition to this paper, I would like to mention some modifications that have recently been introduced.

In Europe, at least 3 revised systems have been published with improvements of these estimations: “Feed into Milk” (UK, 2004; C. Thomas, Ed), “NorFor” (Scandinavia, 2011; H. Volden, Ed), and “DVE/OEB2010” (Netherlands, 2011; van Duinkerken et al.,).

Protein evaluation systems also include protein requirements for maintenance, gestation and lactation and adequate supply of rumen degradable crude protein for optimal microbial functioning in the rumen. I hope the author will present this part of the protein evaluation systems in a next contribution.

Dr Ad van Vuuren, Wageningen UR and coordinator of EU-FP7 project “RedNEx”.
Ben Kimoro Ben Kimoro
M. SC. Animal Science (Ruminant Nutrition)
November 5, 2013
This is a wonderful review of the protein evaluation systems and provides a critical body of knowledge especially for the ruminant nutritionists with an interest in protein utilization.

The comments on the recent additions is quite relevant and useful
November 11, 2013
Ad van Vuuren; Thank you so much for your valuable suggestion definitely I will include in next publication...
February 27, 2019


Compliments to you for an outstanding and comprehensive overview of the various protein evaluation systems around the world.

For an Indian context, which system would you propose to be most appropriate?

Thank you!

November 29, 2020
This is so succinct and indeed direct to the point. I have been seeking a well expository definition of the systems and I think I found it. Left with the UK systems....Smiles...Thank you a great deal
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