New YorK AGRICULTURAL EXPERIMENT STATION. 29 
per ct. or more of the protein was derived from by-products of 
animal origin. [xcept a small amount of blood meal included in 
a grain mixture fed to each lot, these foods for Lot I consisted 
of “animal meal” and “meat meal,” Lot Il of blood meal 
and bone-meal, and for Lot III of “milk albumen” and bone- 
meal. 
The “ animal meal” used in one ration contained an excessive 
amount of bone, and bone-meal was added to the other rations 
to make the percentage of total ash about alike for all and to 
avoid any possible deficiency of mineral matter, especially of 
phosphate of lime. It is probable that more bone was fed than 
Is necessary or desirable. The total ash constituents of the food 
represented from a little less than 14 per ct. to something over 
17 per ct. of the total dry matter in the different rations. Aside 
from the different animal foods mentioned the rations were 
practically alike. | | 
The ducklings were hatched together and were all from the 
same stock. lxperimental feeding began when they were one 
week old. There were 30 birds in each lot for the first five 
weeks. The number was then reduced to 25 in each. 
FOODS. 
Besides the prepared foods mentioned, green alfalfa was fed 
to each lot, corn meal and a mixture, “8S,” composed of four 
parts of cream gluten meal, two parts each of pea meal and 
low grade flour and one part each of corn meal, wheat mid- 
dlings and blood meal. To every hundred pounds of this mix- 
ture five ounces of salt was added. Sand was regularly mixed 
in the. food. 
The accompanying table shows the average composition of 
each food. 
TABLE J.—CoMPoOSITION oF Foops USsEp FoR DUCKLINGS. 




‘ Nictras Ether 
FOOD. Moisture. | Protein. Ash. Fiber. eiiiaat extract, 
me ; (T’ats.) 
Per ct. Per ct. Per ct. Per ct. Per ct. Per ct. 
Mixture 677 2..8. 5.6% Paine Slee 17, 9 49.5 tarts} 
FOGTHCINGAL ¢ es care ss 5 14.6 S| 1.4 1.9 70.4 3.6 
Meat meal........... 7.8 G2, 4.6 (?) Rhee aly ees: 
Aninial: meal sas... 20 5.8 Sle: 39.8 (2) a7 17.3 
loo meal mi aes. es 11.0 Rok 3:0 (?) 6 5 
**Milk albumen’’..... 10.0 38.6 30°9 (?) 20.0 5 
Bone Meals Fe.5,.s4008 5.6 19.9 64.3 C2 4.3 5.9 
PRUE A RAE yest. s'. oete (iis St 2.0 6.0 9.9 Bi 




