1918] ANIMAL PRODUCTION. 473 



In an experiment made at tlie Bureau of Animal Industry Experimental 

 Farm at Beltsville, Md., two lots of 12 pigs after weaning were fed 112 days 

 on a basal ration composed of corn meal and middlings, four parts each. In 

 addition one lot was fed one part of tankage and the other one part of fish 

 meal. The lot on tankage made an average daily gain of 1.25 lbs. per head 

 with 3.62 lbs. of feed per pound of gain. The lot on fish meal averaged 1.31 

 lbs. daily with 3.65 lbs. of feed per pound of gain. 



During a second period the same 12 pigs were fed 28 days as follows: Lot 1 

 corn meal, middlings, and fish meal, 4:4:1; lot 2 corn meal and fish meal, 9:1; 

 and lot 3 corn meal and tankage, 9 : 1. Lot 1 made an average daily gain of 1.91 

 lbs. per head with 4.21 lbs. of feed per pound of gain ; lot 2 gained 2.16 lbs. 

 daily with 3.93 lbs. of feed per pound of gain ; and lot 3, 2 lbs. daily with 

 4.62 lbs. of feed per pound of gain. 



In another experiment four lots of three pigs each, averaging about 150 lbs., 

 were fed 56 days. Lot 1 on corn meal and tankage, 6: 1, made an average daily 

 gain of 1.57 lbs. per head with 4.03 lbs. of feed per pound of gain ; lot 2 on 

 dried pressed potato and tankage, 6:1, a daily gain of 0.8 lb. with 6.95 lbs. 

 of feed per pound of gain ; lot 3 on dried pressed potato and oil meal, 6 : 1, a 

 daily gain of 0.91 lbs. with 5.84 lbs. of feed per pound of gain ; and lot 4 on 

 dried pressed potato and fish meal, 6 : 1, 1.32 lbs. witli 4.28 lbs. of feed per pound 

 of gain. 



The heaviest hog from each lot in these experiments was tested, both meat 

 and lard, to determine vv'hetlier the fishy odor or taste was apparent. In no 

 case was there any indication that feeding fish meal transmitted any undesir- 

 able taint to the pork. 



The pigs in the experiments outlined ate the fish meal without trouble and 

 with relish, and were never oft-fed during the tests. It proved to be a very 

 effective supplement to a grain ration, and was superior to tankage in that 

 respect in all the comparisons reported. 



Feeding' dried pressed potatoes to swine, F. G. Ashbrook and R. E. 

 GoNGWEB {U. S. Dept. Ayr. Bui. 506 {1911), pp. 10, pis. 2, figs. 2).— The U. S. 

 Department of Agriculture has been making a study of the preservation of 

 potatoes by drying. An experiment was made at its farm at Beltsville, Md., 

 to determine the value of this product for fattening pigs and the effects of the 

 ration on the quality of the meat. 



Four lots of three pigs each, averaging about 150 lbs., were fed for 56 days on 

 the following rations : Lot 1 corn meal and tankage, 6 : 1, lot 2 dried pressed 

 potato and tankage, 6 : 1, lot 3 dried pressed potato and linseed oil meal, 6 : 1, 

 and lot 4 dried pressed potato and fish meal, 6: 1. They made an average daily 

 gain with pounds of feed per pound of gain as follows : liOt 1, 1.57 lbs. with 

 4.03 lbs. of feed ; lot 2, 0.8 lb. with 6.95 lbs. of feed ; lot 3, 0.91 lb. with 5.84 lbs. 

 of feed ; and lot 4, 1.32 lbs. with 4.28 lbs. of feed. 



Mixing or soaking the dried pressed potato for from 15 to 20 minutes was 

 the best method of feeding it. The analyses indicate that it should be com- 

 bined with a high protein feed and the results of this experiment indicate that 

 it is efficient when so fed in producing good gains with pigs. 



No difference could be noticed in the curing or the quality of the finished 

 product of the pigs in the four lots. 



Proportions of supplements to corn for fattening swine, AV. L. Robison 

 (OJiio Sta. Bui. 316 {1911), pp. 57, figs. 2-1) .—Though it has been well demon- 

 strated that corn must have supplemental feeds combined with it for tlie best 

 results in fattening swine, the best proportions of the mixture have not been 



