412 NUTRITION OF FARM ANIMALS 



TABLE 101. KELLNER'S STANDARDS FOR FATTENING PIGS 



The outcome of the cooperative experiments tended to con- 

 firm these standards, indicating that any considerable departure 

 from them will fail to meet the requirements of rapid growth in 

 the best strains of animals or to secure the largest returns. 

 On the other hand, the fourth Lauchstadt series perhaps points 

 in the direction of lower standards, especially for the more 

 mature animals. For breeding animals Kellner recommends 

 somewhat smaller amounts of protein, viz. : 



TABLE 102. KELLNER'S STANDARDS FOR GROWTH OF PIGS 



Dietrich 1 recommends notably larger amounts of protein, 

 although he too recommends less for breeding than for fattening 

 animals. His figures for fattening pigs are 6.0 to 7.0 per 1000 

 up to the age of about 6 months, followed by a gradual reduc- 

 tion to 3.3 per thousand at 7 to 8 months. For breeding animals 

 his figures are 5.0 to 5.5 up to 6 months of age, gradually dimin- 

 ishing from that point to 2.0 at maturity. 



491. General conclusions. It is apparent from the fore- 

 going paragraphs that the evidence regarding the protein re- 



1 Ills. Expt. Sta., Circulars 126, 133 and 153. 



