Milk proteins still the “gold standard” in milk replacer

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Can you feed a milk replacer that contains soy protein concentrate without depressing calf growth?

University of Illinois researchers added the amino acid glutamine to a soy- based milk replacer in hopes of doing just that. However, the calves fed the glutamine-supplemented milk replacer still saw an 18-percent decline in average daily gain compared to calves fed a whey-based milk replacer. The chart below shows some of the results reported in the May Journal of Dairy Science.

Calf Performance Results


All milk

Soy protein concentrate

Soy protein concentrate, plus glutamine

Daily Gain

0.76 pounds

0.62 pounds

0.62 pounds

Gain-to-feed Ratio




Source: May 2006 Journal of Dairy Science

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