Swine Growers' Session. 79 



were: Corn meal, 43 cents per 56 pounds, meat meal, $37.00 per 

 ton. 



In the experiments quoted, meat meal and tankage have both 

 varied considerably in composition, but when of the same composi- 

 tion are apparently of about equal value. 



The highest per cent of protein in either tankage of meat meal 

 was 66.36; the lowest 53.54. That which was highest in protein 

 was of somewhat more value than the shipments with lower pro- 

 tein content. 



The supplemental feeds used have in no way affected the sell- 

 ing price of the hogs, nor have they, so far as one test of carcasses 

 will show, affected the value of the dressed carcasses. 



The high value of good clover pasture is the most striking fea- 

 ture of the entire series of experiments. In the one experiment in 

 which dry lot and pasture feeding has been compared the pasture 

 feeding has given the greatest gains at lowest cost. Clover is 

 credited with 400 pounds gain in pork per acre, from July 24th 

 till November 13th. With pork at 4 cents per pound, this gives a 

 return of $16.00 per acre for clover pasture, and this is for but half 

 the season. I think it is not too much to assume that good clover 

 pasture is worth at least $25.00 per acre per season, when utilized 

 by growing hogs that receive all the corn they will eat while on 

 such pasture. 



In closing, I desire to call your attention, briefly, to the work 

 done by the Iowa Experiment Station in demonstrating the trans- 

 missibility of tuberculosis from cattle to swine. The losses to the 

 packers from the purchase of swine affected with tuberculosis have 

 become so serious that all buyers buy with a sufficient margin to 

 protect their firms against loss. In other words, all hogs are bought 

 low, in order that the packer may not suffer loss. The result is that 

 the man who ships healthy hogs suffers as much loss as the man 

 who ships tuberculous swine. 



In the experiments referred to, four lots of ten head each 

 were used. All tests that could be made to determine the health 

 of the pigs at the start were made, and there is every reason to 

 believe that they were healthy at the beginning of the test. Two of 

 the lots were fed some pasteurized milk and two some milk infected 

 with finely hashed tubercular tissue containing virulent tubercle 

 germs. Within four and a half months from the time they re- 

 ceived the first infection the hogs were slaughtered. All lots had 

 received milk, corn and shorts as their main ration. Lot 1, fed 

 on pasture and allowing some pasteurized milk, had two affected 



