DAIRY FARMING DAIRYING. 605 



Crimson clover hay v. purchased feeds (pp. 11-16). — The crimson clover ration con- 

 tained 60.4 lbs. crimson clover hay and 30 lbs. corn silage. The feed ration was the 

 same as in the preceding experiment. The 2 rations contained the same amount of 

 protein and had nutritive ratios of 1:5.7 and 1:6.1. The test, made with 2 lots of 2 

 cows each during a period of 30 days, showed that 18.1 per cent more milk was 

 produced on the feed ration. The cost of producing 100 lbs. of milk on the crimson 

 clover ration was 71.2 cts. and 1 lb. of butter 14.46 cts., the corresponding figures 

 for the feed ration being 89.5 and 18.19 cts. , respectively. The saving in the cost of 

 food when the crimson clover ration was fed was more than equal to the increased 

 yield when the feed ration was used. The increase in the live weight of the animals 

 was greater on the crimson clover ration. This crop has been grown successfully at 

 the station for a number of years. 



Cowpea silage a)id crimson clover hay v. purchased feeds i];)^). 16-23). — The home- 

 grown ration contained 36 lbs. cowpea silage, 10 lbs. crimson clover hay, and 6 lbs. 

 corn-and-cob meal, and the feed ration, 36 lbs. corn silage, 5 lbs. mixed hay, 4 lbs. 

 dried brewers' grains and 2.5 lbs. cotton-seed meal. As in the previous experiments 

 the test was made with 2 lots of 2 cows each and lasted 30 days. The 2 rations were 

 practically identical as regards nutrients. The yield of milk and butter on the 2 

 rations was practically the same. The cost of producing 100 lbs. of milk was 66.9 

 cts. on the home-grown ration, and 69.9 cts. on the purchased feed; and the cost of 

 producing 1 lb. of butter was 15.1 and 14.9 cts. respectively. The home-grown 

 ration was considered therefore equally as good as the purchased ration. The com- 

 position of fodders and feeds used in the experiments is shown in a table. 



The relative value of protein in cotton-seed meal, cowpea hay, and wheat 

 bran, A. 31. SouLEandS. E. Barnes {Tennessee Sia. Bui. V(d. X]\ No. 4,PP- 14S~16S, 

 figs. ^). -^Dairying in the South is discussed to some extent in this bulletin, and a 

 cooperative experiment between the station and the Bureau of Animal Industry of 

 this Department is reported. The purpose of the experiment was to compare dif- 

 ferent combinations of cotton-seed meal, cowpea hay, and wheat bran as sources of 

 protein. Three lots of 4 cows each were fed experimentally for 4 months. The 

 daily ration for all animals included 30 lbs. of silage. In addition, lot 1 received 4 

 lbs. of cotton-seed meal and 6 lbs. of wheat bran; lot 2, 4 lbs. of cotton-seed meal and 

 7 lbs. of cowpea hay; and lot 3, 6 lbs. of wheat bran and 13 lbs. of cowpea hay. The 

 3 rations furnished the same amount of protein and were satisfactorily eaten by the 

 cows. 



Lot 1 consumed 25,415 lbs. of silage, 2,880 lbs. of wheat bran, and 1,920 lbs. of 

 cotton-seed meal; lot 2, 23,795 lbs. of silage, 3,034 lbs. of cowpea hay, and 1,920 lbs. 

 of cotton-seed meal; and lot 3, 15,531 lbs. of silage, 4,935 lbs. of cowpea hay, and 

 2,880 lbs. of wheat bran. Lot 1 gained 41 lbs. and lot 2, 7 lbs. in live weight during 

 the 4 months, and lot 3 lost 190 lbs. The milk produced by the 3 lots was, respec- 

 tively, 9,1.34, 7,833, and 7,176 lbs., and the fat produced, 447.59, 415.15, 394.68 lbs. 

 "It appears that all the foods were satisfactory in maintaining a good flow of milk, 

 a high fat content, and a high percentage of total solids, and the variations shown 

 are not definite enough to attribute the results to any material influence of the 

 respective feeds." The digestible matter consumed by the 3 lots for the production 

 of a gallon of milk was, respectively, 6.2, 6.5, and 7.2 lbs., and for the production of 

 a pound of butter, 12,.7, 12.4, and 13.1 lbs. 



In preparing a financial statement, both high and low prices of feeding stuffs are 

 taken into account, as well as the fertilizing value of the manure. With high prices, 

 the net cost of milk production by the 3 lots was, respectively, 6.7, 5.6, and 8 cts. per 

 gallon, and with low prices, 4, 3.5, and 4.4 cts. The net cost of butter production 

 with high prices was 13.8, 10.7, and 14.5 cts. per pound, and with low prices, 8.4, 

 6.7, and 7.9 cts. 



16398— No. 6—03 7 



