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Published online by Cambridge University Press: 05 November 2021
Providing adequate protein nutrition for high yielding dairy cows is essential if their milk production potential is to be achieved. However, oversupply of protein has detrimental effects on biological efficiency as well as having a negative impact on the environment due to greater excretion of nitrogen in animal wastes. The present experiment was conducted to investigate the response to protein concentration and degradability in the diet by dairy cows of differing genetic merit (GM).