204 Feeds and Feeding. 



fed American meat, made into biscuits with oats, showed superiority 

 over those fed in the ordinary way. Meat biscuits have been recom- 

 mended for feeding race horses. Dried blood, the richest of all these 

 products, is particularly useful with young pigs and calves. (485) 



Since tankage is in part produced from the carcasses of diseased 

 animals, the question arises whether it may not carry disease to 

 animals fed on it. Mohler and Washburn, 1 who have studied the 

 matter, write: "As tankage is thoroly steam-cooked under pressure 

 it comes out a sterilized product, and owing to its dryness there is 

 little danger of infection." None of the many stations that have fed 

 tankage have reported any trouble of such nature. 



307. Dried fish. Along the coasts of Europe the waste parts of 

 fish, as well as entire fishes not used for human food, are fed in dried 

 form to animals. Speir of Scotland 2 reports no bad influence on milk 

 when reasonable quantities of dried fish are fed to dairy cows. Nil- 

 son 3 found that 80 parts of herring cake could replace 100 parts of 

 linseed cake in the ration for cows. The better grades of dried fish 

 meal should be used for feeding farm animals. 



308. Bone meal and ground rock phosphate. Trials at the sta- 

 tions have shown that pigs fattened largely or entirely on corn will 

 profit greatly by the addition of bone meal or ground rock phosphate 

 to the ration. The production of milk makes a steady drain on the 

 cow for lime, phosphorus, etc., which often causes a depraved appe- 

 tite, shown by eating horse manure, chewing old bones, etc. This 

 craving can often be satisfied by adding bone meal or probably 

 ground rock phosphate to the ration. Colts and growing horses may 

 likewise be benefited by such addition to their rations. (90, 892) 



309. Wet beet pulp. This by-product, of great volume at the beet 

 factories, contains about 90 per ct. water and 10 per ct. solids. The 

 dry matter of wet beet pulp is equal to that of roots in feeding 

 value, and the pulp can be used in the same manner as are roots for 

 feeding farm animals. The Colorado Station 4 found that 1 ton of 

 wet beet pulp had about the same feeding value as 200 Ibs. of corn 

 for fattening lambs. The wet pulp is relished by dairy cows and 

 produces a good-flavored milk. For fattening steers alfalfa or clover 

 hay should be combined with the pulp, but no concentrates should at 

 first be fed. On this combination the animal will for some time gain 

 rapidly in weight, tho the flesh will be soft and watery. After a 

 time such concentrates as corn, barley, etc., should be gradually sub- 



1 U. S. Dept. Agr., Bur. Anim. Indus., Cir. 144. 



2 Trans. Highl. & Agr. Soc., 1888, pp. 112-128. 



3 Kgl. Landtbr-Akad. Handl., 1889, p. 257. 

 Bui. 76. 



