628 



EXPERIMENT STATION RECORD. 



"(5) The test also shows that, with the ri.t,^ht kind of cows, Imtter fat may be 

 produced during the winter at a cost of not more than 9 cts. per pound. 



"(6) The cows which were the largest eaters were, without exception, the largest 

 and most economic producers." 



Some observations were made on the moruiug and evening milk, 

 tlie composite samples being kept separate for testing. The period 

 between night and morning milkings was lo hours and between morn- 

 ing and night milkings 11 hours, so that the morning's milk was from 

 the longer time. The author states that almost without exception the 

 evening's milk was much richer than the morning's milk throughout 

 the whole winter, while the yield was almost invariably larger in the 

 morning. The largest average variation in comi^ositiou for the whole 

 time was 1.5 per cent in the case of a Jersey heifer. 



"[In the case of tiiis cow] while the weight of milk gi\en each month is greater 

 in the morning than in the evening, yet the weight of fat is uniformly greater in 

 the evening, or, in other words, there was more fat secreted by the cow during the 

 11 hours of the day than during the 13 hours of the night." 



Dairy herd record for 1894-'95, F. B. Linfield ( Utah Sta. Bui. 43, 

 pp. 1-34, figs. 8). — The record is given for 15 cows for 1 year beginning 

 June, 1894. With 2 or 3 exceptions the cows were natives and grades. 

 They were of different ages and in diflerent stages of the period of lacta- 

 tion. The method of keeping the record is described, and the Babcock 

 test and its use in paying for milk, the merits of paying for milk by 

 weight and by test, and the food given the cows are discussed, together 

 with the composition of alfiilfa hay, mixed hay, green fodder (i)rinci- 

 pally alfalfa), wheat, barley, and bran. The data are tabulated in detail, 

 showing for each cow in each month the weight, yield of milk, fat con- 

 tent of milk, calculated yield of butter fat, cost of food eaten, and cost 

 per pound of butter fat, and these data are summarized. The follow- 

 ing table gives a summarj^ for the year of the more important data: 



Summary of herd record for the year. 



Cow. 



No. 

 No. 

 No. 

 No. 

 No. 

 No. 

 No. 

 No. 

 No. 

 No. 

 No. 

 No. 

 No. 

 No. 

 No. 



Average 2.. 



Weight 

 of cow.s. 



Lhs. 



1,191 



1,101 



976 



1,029 



1,007 



9U 



965 



992 



911 



966 



989 



909 



1,035 



889 



675 



Cost of Yield 

 feed. I of milk. 



$21. 58 

 17.80 

 21.65 

 25.58 

 20.90 

 20.07 

 25.00 

 24.89 

 19.71 

 25.82 

 18.74 

 23. 88 

 26.71 

 19.61 

 10.00 



Lhs. 

 148.9 

 820.3 



801.0 

 912.1 

 087.9 

 196.0 

 424.8 

 156.1 

 367.5 

 479.4 

 272.0 

 868.1 

 720.3 

 917.7 

 303.1 



991 I 22.28 5,655.1 



Cost of 

 100 lbs. 

 of milk. 



CU. 



41.91 



30.58 



31.83 



52.07 



29.48 



47.83 



46.09 



34.78 



30.95 



47.12 



35.55 



49.05 



39.74 



50.05 



43.42 



Yield \ Yield 

 of but- j of 

 ter fat. butter. 



40.50 



Lbs. 

 156. 70 

 218. 11 

 313.41 



250. 00 

 258. 87 

 1.56. 00 

 227. 77 

 303. 03 

 271.89 

 223. 77 

 213. 54 

 203. 32 

 2811. 26 

 147. 09 

 102. 82 



Lbs. 

 182. 81 

 2.')4. 46 

 365.64 

 291. 66 

 302. 91 

 182.00 

 265. 73 

 353. 53 

 317.20 

 261. 06 

 249. 13 

 237. 20 

 326. 97 

 171.60 

 118. 79 



230. 27 268. 74 



Yield 

 I <.f but- 



Net returns. 



Cost of!!'™: With •• With 

 1 Ib.of i}"^!;'^'^ milk at butter 

 butter. ^ ,. ^l^- 70 cts. : at 20 



wShtfiU^TV 



Cts. 



11.80 

 6.99 

 5.91 

 8.77 

 6.91 



11.02 

 9.40 

 7.04 

 6.21 

 9.88 

 7.51 



10.06 

 8.17 



11.42 

 8.33 



Lbs. 

 15.34 

 23.11 

 37.46 

 28.34 

 30. 00 

 19.91 

 27. 52 

 35.63 

 34.82 

 27. 02 

 25.18 

 26.09 

 31.59 

 19.30 

 17.61 



$14. 46 

 22. 94 

 25.95 



8.80 

 28.71 



9.30 

 12.98 

 25.20 

 24.86 

 12.53 

 18.16 

 10.19 

 20.33 



7.81 



6.12 



$14. 96 

 33.09 

 51.37 

 32.75 

 29.50 

 16.33 

 28.14 

 45.81 

 43.73 

 26.39 

 31.08 

 23.56 

 38.68 

 14.71 

 13.75 



17.30 31.47 



' Record for six months. 



* Average without No. 15. 



