278 EXPERIMENT STATION RECORD. 



when corn was at ordinary prices. During tlie first year when corn and sil;ij;(^ 

 were low in price, silage gave the cheapest gains with di'y feed second. 



" In each of the 3 years the lambs getting sugar beets made the largest total 

 gain and matured more quickly than any of the other lambs. . . . The 

 amount of dry matter required for each 100 lbs. gain was highest for the lots 

 getting turnips and cabbage, and lowest for those getting mangels and sugar 

 beets." " So far as finish was concerned all the rations produced market top- 

 ping lambs so that the value of the feeds to the shepherd depended more on the 

 rate and economy of the gains they produced." " Sugar beets and mangels 

 favored the formation of renal calculi, or stones in the kidneys and bladder, with 

 the possibility of an obstructed urethra and consequent fatal results to rams 

 long fed on these feeds." 



Influence of condimental stock foods on the digestibility of a corn ration 

 fed to swine, L. G. Michael et al. {Iowa Sta. Bui, 113, pp. 81-119, figs. 3). — 

 These experiments on the influence of proprietary condimental stock foods on 

 the digestibility of corn involved 24 pigs, representing several breeds. 



The average gains per head per day with the different rations were as fol- 

 lows : With corn alone 0.901 lb., at a cost of 6.23 cts, per pound ; corn and Inter- 

 national stock food 0.894 lb., at a cost of 7.70 cts. per pound; corn and Iowa 

 stock food 0.912 lb., at a cost of 6.84 cts. per pound; and corn and Standard 

 stock food 0.902 lb., at a cost of 6.S9 cts. There was no apin-eciable change in 

 the digestion coefficients of protein or total organic matter when the different 

 stock foods were added to the corn ration. 



The following conclusions are drawn : " Stock foods did not have any ben- 

 eficial effect on the digestion. Stock foods did not have any appreciable effect 

 on getting greater gains from a corn ration than can be obtained from feeding 

 corn alone. It required more feed to produce a pound of gain when stock 

 foods were used than when corn was fed alone. A bushel of corn produced as 

 much or more pork when corn was fed alone than it did when stock foods were 

 addetl to it. The pork produced by corn alone returned a greater net value per 

 bushel of corn fed than was returned when a stock food was added to the corn." 



The value of stock foods for swine (lotoa Sta. Bui. 113, popular eel., pp. 

 3-10). — A popular edition of the above. 



The value of corn, oil meal, cotton-seed meal, and gluten feed in work 

 horse rations, W. .7. Kennedy. E. T. IvOBp.ins, and H. II. Kildee (Iowa Sta. 

 Bui. 109, pp. >il9-.'i.'i5). — In this bulletin, feeding trials which have been con- 

 tinued for 2 years are reported in which concentrated feeds rich in protein 

 were substituted for oats in rations for work horses used at the station. 



The principal pouits considered were the health of the horses, degree of spirit 

 maintained, ability to endure haid w^rk and hot weather, maintenance of 

 weight and flesh, and economj' of the ration. The breeds of horses used were 

 Shires, Clydesdales, and Percherons. In all cases, practically the same amount 

 of protein, carbohydrates, and fat were fed in each ration. Timothy hay was 

 fed a greater part of the time. 



In the first experiment, corn and oil meal 10:1 constituted the grain ration 

 for 1 lot, but when this was found too laxative it was changed to corn. oats, 

 and oil meal 12:4:1, which gave excellent results. During a period of 100 days, 

 this ration cost 2?> cts. per head per day as contrasted with a ration of corn and 

 oats which cost 24.6 cts. per day. The weights of the hor.ses varied from week 

 to week but this could be tracetl directly to the nature and amount of the woi-k. 



A comparison of gluten feed and oil meal for 91 days indicated that for horses 

 that relish gluten feed, or with gluten feed having a more palatable flavor, as 

 good results could be expected from its use as from an amount of oil meal fur- 



