• Free Dairy Ration Software

Predictive Reliability in Field Practice The Formulate2 DFS stand-alone application is a diet formulation application for dairy animals that fully implements the NRC 2001 animal model as well as the post NRC work conducted at the University of New Hampshire by Dr. Chuck Schwab et al. The objective of the post NRC work was to extend the applcation of the NRC model to predict changes in lactation from changes in predicted intestinal supplies of Lysine and Methionine. That work, orginally conducted in 2003-2004, has been supplemented with additional work by Dr. Schwab and Nancy Whitehouse of UNH. Chi tech 1600 series.

Completed in 2015, this new work extends the data set used in the post NRC effort from approximaley 300 diets to almost 1000 diets and includes data from higher producing animals. This post NRC work is implemented in Formulate2 as the AA and MP Calculator. The Calculator employs the equations from Dr. Schwab's post NRC work (both 2003-2004 and 2015) to generate MP-Lys and MP-Met gram requirements for user stipulated milk yield and milk TP precentage. Because requirements are stated on a gram basis - not as perentages of MP - the NRC MP requirement can be refactored while the total grams of MP-Lys and MP-Met required for the user stipulated milk yield and milk TP content remain constant.

Free Dairy Ration Software

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In addition, the Calculator generates a milk yield prediction based on predicted milk TP yield calculated from model predicted MP-Met supply and also provides a means of adjusting the NRC prediction of microbial crude protein yield (MCP) to account for changes in rumen fermentation. The yield most precisely predicted by NRC 2001 is milk true protein yield (TP). On well managed farms where a single diet is fed to all lactating animals, the Calculators predicted, TP-adjusted milk yield correlates very closely with actual on-farm milk yield. Some 40 years of research in the area of the AA nutrition of lactating dairy animals has consistently indicated that Lysine and Methionine are the first limiting AA in typical diets fed to lactating dairy cows in North America. The NRC 2001 model, the post NRC work and the TP-adjusted milk yield predictions of the AA and MP Calculator are all well aligned with that body of research.