Publication Date
1993
Description
Two studies were conducted to determine whether protein or energy is first limiting for milk production when cows are fed diets containing large amounts of high quality forage. In the first study, infusion of 1.2 kg/day of soy-protein into the abomasum of cows consuming a diet of all lucerne (Medicago sativa L.) silage increased milk and milk protein production by 13 and 1996. Abomasal infusion of l.0 kg glucose was without effect. In the second study, supplementation of dietary protein resistant to degradation in the rumen to cows fed diets containing 7596 of lucerne silage increased milk production and milk protein secretion by 2196, but dietary fat supplementation had little effect. It was concluded that protein Is more limiting than energy when high quality legume forage is fed to lactating dairy cows.
Citation
Dhiman, T R. and Satter, L D., "Protein Rather than Energy is the Limiting Nutrient for Lactating Cows Fed Large Amounts of High Quality" (2024). IGC Proceedings (1993-2023). 12.
https://uknowledge.uky.edu/igc/1993/session14/12
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Protein Rather than Energy is the Limiting Nutrient for Lactating Cows Fed Large Amounts of High Quality
Two studies were conducted to determine whether protein or energy is first limiting for milk production when cows are fed diets containing large amounts of high quality forage. In the first study, infusion of 1.2 kg/day of soy-protein into the abomasum of cows consuming a diet of all lucerne (Medicago sativa L.) silage increased milk and milk protein production by 13 and 1996. Abomasal infusion of l.0 kg glucose was without effect. In the second study, supplementation of dietary protein resistant to degradation in the rumen to cows fed diets containing 7596 of lucerne silage increased milk production and milk protein secretion by 2196, but dietary fat supplementation had little effect. It was concluded that protein Is more limiting than energy when high quality legume forage is fed to lactating dairy cows.
