BALANCING DIETS WITH THE CNCPS v6.5 - WHAT'S CHANGED ANDIMPLICATIONS FOR USE

摘要

With the release of CNCPS v6.5, there are changes to the predictions and requirements for energy, protein and amino acids and subsequently, some of the values that have been used to evaluate diets have changed or require review. Of particular interestare the amino acid requirements and supply with the updated library values and new post-absorptive efficiencies. Also, nutrient supply in dry cows, heifers and pasture fed or high forage fed cattle have to some degree been under-predicted and a new evaluation of passage rate equations for forages has been conducted and updated passage rate equations are being incorporated where needed.