258 



Pork Production 



competition of other forms of protein supplements on the 

 market, however, it is not necessary nor wise to pay these 

 prices. The price one can afford to pay must be deter- 

 mined by the relative value of tankage and other suitable 

 supplements. The most direct and satisfactory way of 

 making this comparison is by the aid of the carefully 

 conducted practical feeding experiment. 



Tankage versus linseed-oil meal. 



Direct comparison of tankage and linseed-oil meal 

 (old prodess) for finishing pigs in the dry lot has been 

 made in eight recent experiments. In each test the pigs 

 were fed to market weights, which required an average of 

 74 days' feeding. The summarized results of these 

 studies are shown in Table CII. 



Table CII. — Summary : Tankage versus Linseed-Oil Meal 

 (Av. 8 Exps.) ' 



The summarized results show up in favor of the tankage 

 rations, both in rate of gain and total feed required to pro- 

 duce a given gain. Furthermore, but little more than half 

 as much tankage was fed as oil-meal, which permitted the 

 use of a larger proportion of corn in the tankage rations. 



• Ind. Exp. Sta. BuU. 137 and 126 ; Ohio Exp. Sta. Bull. 213 ; 

 Neb. Exp. Sta. BuU. 147. 



