146 



Pork Production 



to the forage crops, therefore, than would be the case with 

 this common method of feeding. 



With the method of full feeding, the benefits of the 

 forage crop are largely derived from the faster gains, 

 while with limited feeding on forage the benefits from 

 the crop are chiefly due to the saving effected in the grain 

 required to produce a unit of gain. 



Feeding skim-milk on forage. 



An exception is to be made to the usual results of dry 

 lot versus pasture feeding when skim-milk or buttermilk 

 is used as the nitrogenous supplement. These supple- 

 ments are so watery and so completely balance the de- 

 ficiencies of grain, that there appears to be no benefit 

 in faster or cheaper gains by allowing the pigs access to 

 a succulent forage crop. The addition of a bulky forage 

 to a ration of grain and milk would appear, in fact, to be 

 detrimental. This is shown by the results of experi- 

 ments made by Linfield at the Utah Experiment Station. 1 

 The average of two tests made in different years is shown 

 in the following table : 



TABLE XXXV. SKIM-MILK ON PASTURE VERSUS SKIM-MILK 

 IN THE DRY LOT 



1 Bull. 70. 



