National Research Council (N.R.C.) standard


  • In USA a sub-committee of the committee on Animal Nutrition under the auspices of the National Academy of Sciences - National Research Council (NRC) and US Department of Agriculture (USDA)recommended a nutrient allowance for dairy cattle which was first published in 1945. Since then they have been publishing the nutrient requirements for all types of farm animals .
  • The standard includes digestible protein and total digestible nutrients and also includes the recommended requirements for calcium, phosphorus, carotene and vitamin D for dairy cattle, beef cattle, pigs, poultry, sheep, dogs, horses, laboratory animals etc.
  • Today in a number of countries N.R.C. standards are followed where they use ME for poultry, DE for swine and horses, DE, ME and TDN for sheep, ME, TDN and NEm and NEg for beef cattle and for dairy cattle, values are given for DE, ME, TDN, NEm and NEg for growing animals with additional values as NEl for lactating cows. 
Last modified: Saturday, 31 March 2012, 5:09 AM