A GUIDE FOR KEEPERS OF POULTRY 169 
then pressed under heavy pressure to extract the fats, 
after which it is dried and coarsely ground. This also is 
very rich in protein and a valuable feed. 
Green cut bone is almost invariably butcher's bone 
ground at home in a bone-cutting mill. It is rich in lime, 
phosphorus and protein, with some fat. This green cut 
bone is the most valuable of all feeds, but not too much 
should be fed, as it is laxative when too much of it is fed 
at a time or when fed too frequently. The following 
table gives the nutritive value of the several animal feeds: 
THE ANIMAL FEED USED FOR POULTRY. DIGESTIBLE NUTRIENTS IN 
100 POUNDS. 
Dry matter. Ash. Protein. iets, NUE 
Bloodmeal..... .......665 92.7 19.7 32 23 1:0.7 
Beef serap...............- 89 4.1 66.2 33.3 1:0.5 
Green cut bone .......... 65 11.5 18 43 1:2.5 
Dried Ash peccs, sacs se se 89.2 39.2 44.1 23.2 1:0.5 
SkimmikK,. eices vee oe os 9.4 0.7 2.9 5.9 1:2 
Dried fish is sometimes used as a poultry feed. It is 
very rich in protein and contains more phosphorus than 
ordinary meat feeds, but it is likely to flavor the eggs 
when fed to laying hens. It is not to be recommended as 
a regular feed. 
Skimmilk is very highly recommended as a poultry 
feed. \Vhile it contains but a low percentage of nutritive 
elements to its whole bulk, it has been found to be a very 
cheap nutrient in those places where it could be bought 
at the price most commonly charged. 
FERTILITY AND “HATCHABILITY.”—It was 
found in experiments at the Maine station that hens 
which laid through the winter laid as large a percentage 
