266 EXPERIMENT STATION EECOED, 



iiie.-il, corn silage, and corn stover, the nutritive ratio of the two rations being 

 practically the same. Lot 1 cousuuiod less protein and more crude fiber than 

 lot 2. Lot 1 i)roduced slightly more milk than lot 2, but slightly less milk fat. 

 This difference in fat is thought to be due to the difference in the original 

 percentage of milk fat between the two lots. The difference remains quite con- 

 stant throughout the three periods, indicating that the two rations were practi- 

 cally equal in ethciency. 



Lot 1 made an average gain in weight per cow of 3G.5 lbs. and lot 2 of but 1 lb. 

 Every cow gained on the alfalfa ration while three gained and three lost on the 

 other ration. Lot 1 consumed 16.6 per cent more dry matter per 100 lbs. of 

 milk and 19.3 per cent more per pound of milk fat. It is thought that more 

 carbohydrates and fat were given than were required for milk production. 



The average daily cost of feed for lot 1 was 16 cts., the cost to produce 1 lb. 

 of milk 0.81 ct., and 1 lb, of milk fat 18 cts. For lot 2 the costs were 17, 0.85, 

 j'Ud 19 cts., respectively. From this test it is seen that alfalfa as well as soy 

 beans can replace most of the high-priced protein concentrates. 



Feeding experiments with rice-g'luten meal, E. Reisch, M. Schweiger, and 

 J. Hansen (Deiit. Landw. TierzucM, 18 {WlJf), No. 21, pp. 2^5-^48).— Rice- 

 gluten meal is a concentrated feed found in the German markets. It consists 

 of a mixture of rice gluten, a product of rice starch, and of rice meal, an offal 

 from rice middlings. Its comiX)sition is given as follows : Dry matter 92.3 per 

 cent, protein 36.94, fat 11.86, carbohydrates 36.87, crude fiber 1.32, and ash 5.31. 

 Feeding experiments show that for dairy cows the feed is equal In feeding 

 value to a mixture of peanut cake, dried-beet slices, and wheat bran. 



[Dairy husbandry studies], G. H. True {California Sta. Rpt. 1914, PP- 93- 

 98). — Fourteen cows fed barley in addition to alfalfa produced 16.2 per cent 

 more milk and 13.2 per cent more milk fat than when fed alfalfa hay alone, 

 and they also gained 12 lbs. more per head in body weight. The feeding of 

 silage in addition to alfalfa to cows was followed by a gain of 22 per cent in 

 milk, 10.8 per cent in milk fat, and 12.3 per cent in milk solids over a roughage 

 feed comix)sed of alfalfa alone. 



In trials to determine the efficiency of the milking machine it was found 

 that the average time required for milking cows by machine was 10.9 minutes, 

 and 0.78 lbs. of milk was obtained per minute (strippings included). The 

 corresponding data for hand milking were 4.3 minutes and 1.78 lbs. The cows 

 produced 8.2 per cent less milk and 6.7 per cent less milk fat on the 4-week 

 period of machine milking than on the preceding and following two weeks 

 of hand milking. On the average the machine left from 1.2 to 6.8 lbs. of 

 strippings per day to be milked out by hand, containing from 11.8 to 66.4 per 

 cent of the total amount of milk fat produced by the cows. The average left 

 for all cows was 3.5 lbs. of strippings per day and 37.2 per cent of the total 

 fat in these. 



Dairying on cut-over pine lands, E. B. Ferris {Mississippi Sta. Bui. 166 

 {1913), pp. 24, figs. 4). — A general discussion of methods of fee<^ling. care, and 

 management of dairy cattle under south Mississippi conditions, particularly the 

 cut-over pine lands. 



Relation between growth of bone, horn development, and perfoxmance 

 in cattle, M. MiiLLER and K. Narabe {Landw. Jahrb., 46 {1914), No. 1, pp. 

 1-40). -^In a study made of Dutch, Ayrshire, and Rinunental cows, the cir- 

 cumference of cannon bone and the length and circumference of the horns were 

 taken as test measurements. The animals were divided into groups and their 

 relation studied. 



It was found that in the breeds examined, an increase in the size of the 

 bones was correlated with a decrease in the thickness and length of the horns. 



