744 



FEEDS AND FEEDING 



TABLE IV. WOLFF-LEHMANN FEEDING STANDARDS FOE FARM ANIMALS 



The Wolff-Lehmann Feeding Standards have been fully discussed in a preceding 

 chapter. (166-7, 168, 187-8) It is there pointed out that we now have much more 

 accurate and extensive data on the nutrients required by the various classes of farm 

 animals than was possessed by the scientists many years ago when these standards were 

 drawn up. As the Wolff-Lehmann Standards are in many instances inaccurate and do 

 not meet American conditions, they should not now be used in figuring out rations 

 for practical stock feeding. Instead the Morrison (or Modified Wolff-Lehmann) Stand- 

 ards, given in Appendix Table V, or one of the other up-to-date standards discussed in 

 Chapter VII should be used, as these have been designed to meet present day conditions. 

 The Wolff-Lehmann Standards, as last presented by Lehmann in the Mentzel and 

 Lengerke Agricultural Calendar for 1906, are here given, however, because historically 

 this table is worthy of a place in any book on the feeding of farm animals. 



The standards for milk cows are given for the middle of the lactation period with 

 animals yielding milk of average composition. The standards for growing animals 

 contemplate only a moderate amount of exercise; if much is taken, add 15 per cent 

 mostly non-nitrogenous nutrients^ to the ration. If no exercise is taken, deduct 15 

 per cent from the standard. The standards are for animals of normal size. Those 

 of small breeds will require somewhat more nutrients, amounting in some cases to 0.3 

 of a pound of nitrogenous and 1.5 pounds of non-nitrogenous digestible nutrients daily 

 for 1,000 pounds of live weight of animals. 



