How balanced amino acid supplementation stimulates milk and component production independently of energy sources

Researchers from the University of Wisconsin – Madison hypothesized that glucogenic energy, by stimulating insulin secretion, may increase the effect of amino acids on the production of milk components. Using a Latin square design with four 28-d periods, they fed two energy sources — glucogenic (27.5% starch, 3.2% fatty acids) or ketogenic (20.0% starch, 5.8% fatty acids) — and two amino acid levels — 10% metabolizable amino acid deficient or amino acid sufficient, balanced for leucine, lysine and methionine.

Overall, balanced amino acid supplementation stimulated production of milk and components independently of energy source, but milk urea nitrogen and urinary nitrogen excretion results suggest cows used nitrogen more efficiently under glucogenic diets.

Based on 2022 American Dairy Science Association (ADSA) abstract: 

1243 Energy source and amino acids additively stimulate milk fat production but interact on the regulation of milk protein synthesis

Features Dr. Sebastian Arriola Apelo, Assistant Professor at the University of Wisconsin. Kathryn Ruh, MSc student at the University of Wisconsin. Dr. Brian Sloan, Global Director of Ruminant Amino Acids and Protected Nutrient Business, Adisseo. Dr. Daniel Luchini, Head of Ruminant R&I, Adisseo. Dr. Danielle Coleman, Ruminant R&I Science Manager, Adisseo.

To view abstracts, go to: https://www.adisseo.com/en/products/smartline/smart-science-series-ruminant-videos-and-podcasts/