276 EXPERIMENT STATION RECORD. 



The variations in tlio quality (tf the milk were nol sufliciently pronounced 

 to warrant any i)articular deduction. It required substantially equal amounts 

 of digestible matter to produce equal amounts of milk and milk products. 

 Owing to the excess of fertilizer ingredients, es])ecially nitrogen, in the wheat 

 bran, that ration would furnish a somewhat riclier manure. It is believed that 

 if the grain rations had consisted of simplj- alfalfa and corn meal, or bran and 

 corn meal, the results would have been more favorable to the bran. The author 

 sees no advantage in replacing bran by alfalfa meal, for the reason that the 

 quality of the latter is measured by the grade of the hay employed and is likely 

 to vary considerably. Late-cut alfalfa has a low digestibility, and will prove 

 decidedly inferior to a good quality of bran. 



Animal residues as a food for farm, stock, .J. B. Lindsey {Massachusetts 

 Sla. Rpt. 1908, pt. 2, pp. l-'id-l-jl). — This is a discussion of the use of meat 

 and fish meals as feed for stock. An experiment is also reported, the object 

 of which was to compare the total protein of dried blood with an equal amount 

 of protein in cotton-seed meal upon the yield of milk and milk ingredients. 



Two lots of 2 cows each w^ere fed by the usual reversal method for 2 periods 

 of 2 weeks each separated by an interval of 7 days. The average basal ration 

 consisted of 20 lbs. hay, 3 lbs. bran, 3 lbs. hominy, while the supplementary 

 ration was 1 lb. hominy and 1.13 lbs. blood, against 2.25 lbs. cotton-seed meal. 

 The extra pound of hominy was added to make up the deficiency of carbohy- 

 drate material in the blood. 



The yields of milk, total solids, and fat were practically identical in each 

 period and practically the same amounts of dry and digestible matter were 

 required. The blood meal ration favored a noticeable increase in live weight. 

 Estimating the hay to be worth $15, bran $22, hominy $24, cotton-seed meal 

 $29, and blood $55 a ton, the milk cost 1.04 cts. and butter 17.7 cts. per pound 

 with the blood meal ration and 1.02 and 16.9 cts., respectively, with the cotton- 

 seed meal. It was not possible to detect any objectionable flavor which could 

 be attributed to the blood. The blood ration in no way interfered with the 

 normal condition of the animals, all of which consumed it readily. 



The following conclusions are drawn : 



" Dried blood contains some 85 per cent of protein, and when properly pre- 

 pared (not overheated) has proved itself to be highly digestible and well suited 

 as a concentrated 'protein nutrient for farm stock. 



" For cows in milk it may be fed in amounts varying from 1 to 2 lbs. daily, 

 mixed with concentrates of vegetable origin. A satisfactory combination for a 

 day's ration consists of 2 to 3 lbs. of wheat bran, 2 to 3 lbs. of corn or hominy 

 meal and 1.5 lbs. of dried blood. Other mixtures can be made containing blood 

 as a constituent. 



" It is believed to be the part of economy to first utilize blood as an animal 

 food rather than to apply it directly as a fertilizer. 



" The present price of prepared blood, its lack of distribution in local mar- 

 kets and the ignorance of the consumer concerning its merits as a food have 

 thus far preventetl its general use for feeding purposes." 



Effect of soy bean meal and soy bean oil upon the composition of milk 

 and butter fat, and upon the consistency or body of butter, J. B. Lindsey. 

 E. B. HoLLAiND, and P. H. Smith {MassacJiusetts Idtu. Rpt. 1D08, pt. 2, pp. 66- 

 110). — This is a continuation of a series of experiments designed to study the 

 effect of different feeds upon the character and composition of dairy products. 



Two lots of 6 cows each were fed 3 periods. One lot received throughout an 

 average daily ration of bran, ground oats, corn meal, gluten feed, cotton-seed 

 meal and mixed hay, the grain mixture amounting to 7.5 lbs. The second lot 

 were fed the same ration in the first period, which lasted 14 days, but in the 



