Abdelali Barhdadi

Yes AA formulation can be challenging to achieve cost effective rations and maximize performance, minimize metabolic disorders and optimize reproduction, but is certainly very achievable. Protected methionine and lysine should be treated like any other ingredients in the ration. First they should only be selected based on their validated metabolizable methionine and lysine contribution. Afterwards ...

In a follow up experiment with the same team at USDA Wisconsin, a Negative Control treatment was also included to allow a better assessment of what part of the improvements in N-efficiency were simply due to reducing N intake and what part were due to an improvement in performance through amino acid balancing. Effect of feeding different sources of rumen-protected methionine on milk production an ...