FEEDING FISH 223 



2. Animal f eedingstuffs : 



a. Meat meal or tankage. American tankage is rather deficient 

 in lime (p. 124) ; the addition of 5 per cent of feed lime or 10 to 20 per 

 cent fish meal is recommended. German tankage (meat meal) contains 

 more lime, and additional mineral matter is unnecessary. Meals of good 

 quality should be soft, mealy, and light brown in color. Dark, granu- 

 lar meals have been overheated; they are hard to digest and are apt 

 to produce intestinal trouble. From 1^ to 2 cwt. of tankage will pro- 

 duce 2 cwt. of carp meat. 



b. Fish meal. Fish meals of good quality have high nutritive 

 value and contain every necessary element for the building up of the 

 tissues of the fish. 



c. Blood meal. This closely resembles fish meal in properties and 

 value. 



d. Dairy by-products (sour milk, whey, curd) serve as by-feeds. 



e. May bugs or cock chasers (Melolontha vulgaris), caterpillars, 

 the larvae of flies, etc. These also serve as by-feeds. 



3. Feed mixtures. The various meals can not be fed as such; they 

 would be carried away by the wind. They must be worked up into 

 solid masses before feeding. Favorite mixtures follow: 



1. 2. 



Tankage 1 part Fish meal 1 part 



Fish meal 1 part Tankage 1 part 



Rye meal or flour 1 part Boiled mashed potatoes 4-5 parts 



These ingredients are mixed, stirred or 



up with water, cooked to make a thick Fish meal and tankage, of each 1 part 



gruel or paste and molded into little Corn meal 2-3 parts 



balls. Prepared as directed under No. 1. 



