XL -THE ARTIFICIAL FEEDING OF CARP.* 



By Carl Nicklas. 



The rational feediiijj of carp, and in fact of all fish, is possible only 

 when, like the feeding of domestic land animals, it rests on a scientific 

 basis; and when, in accordance with such scientific principles, the 

 various nutritive matters are given to the car}) in such proper propor- 

 tion as its nature demands. 



Starting from this point of view, I made an attempt as early as 1879, 

 in my textbook of Pond culture,t to establish a proper rule for feeding 

 carp, iind have reached the conclusion that the most rational one is to 

 reckon to each 1 ,000 pounds of live carp 9 pounds of dry substance, 

 containing 4 pounds of albumen, 2 pounds of hydrate of carbon, inclusive 

 of fat, which would make the i)roportiou of nutritive nnitter 20 to 1. 



The proportion of nutritive matter is exceedingly close in itself, and 

 still more so if compared with the food standard of land animals; and 

 the demand for hydrate of carbon is consequently very small. 



The quantity corresponds to the demand for food by 1,000 ])ounds of 

 live hogs, if the greatest jmssible quantity of tlesh ami fat is to be pro- 

 duced. I was of opinion that I must make the standard quantity of 

 albumen the same as that demanded by the liog, and I did this for the 

 purpose of not making it too low, remembering the fact that the hog is 

 the most voracious of our domestic animals, requiring more food in pio 

 imrtion than any other, and that the rapidity of its growth resembles 

 that of the carp. 



The proportion of nutritive matter, and the demand for hydrates of 

 carbon, is based on calculations made with data obtained from careful 

 observations made by Miller and Bausignault, as to the quantity of car- 

 bon received in the body and exhaled from it, and on practical feed- 

 ing experiments made on a full grown sheep at the agricultural station 

 of Wende.t 



According to Miller the following quantities of carbon were exhaled 



* Eiins'liche Fulterung der Earp/cu. Fom Giilei-Jitspcclor Carl ^^cklas. From 

 '^Deutsche Fhcherei Zeitung," Vol. V, Nos. 36, 38, 40, 43, 45, Stettin, ScptembcT 5 and 

 19, October 3 and '24, and November?, 1882.— Translated from the German by Hehman 

 Jacobson. 



t Lehrbuch de)- Tdchwirthsohoff, pp. 201-2-2.5. 



tDr E Wolff- '' Futterung der laiidu-irthschaftlichen Nufzthure," 1874, p. 35. 

 S. Mis. 46 64' 1009 



