460 



PRINCIPLES OF AGRICULTURAL CHEMISTRY 



cipitated chalk to the ration, which should be increased gradually 

 from 8 to 10 grams per day. 



Experiments have shown that a nutritive ratio of 1 : 4 is best 

 until the pigs are 5 months old, as it gives the greatest increase of 

 live weight for the food consumed. After this age, the ratio 

 i : 6 is better. 



Standards for Growing Animals. The following are standards 

 for feeding growing animals : 



PER DAY AND 1,000 POUNDS LIVE WEIGHT. 



Pounds 

 Total 



Proteids 

 pounds 



Productive 



value 

 pounds 



Nutritive 

 ratio 



(I) Growing cattle, for milk cows 

 or work: 



Age 2- 3 months 23 



" 3-6 " 24 



" 6-12 " 26 



" 12-18 " 26 



" 18-24 " 26 



(II) To be fattened: 



Age 2- 3 months 23 



" 3- 6 " 



" 6-12 " 26 



" 12-18 " 26 



" 18-24 " 26 



(III) Growing hogs, to be fattened: 



Age 2- 3 months 44 



" 3-5 " 36 



" 5-6 " 32 



" 6-8 " 28 



" 9-12 " 2 5 



Growing hogs, for breeding: 



Age 2- 3 months 44 



3-5 " 36 



11 5- 6 " 32 



" 6-8 " 28 



" 9-12* " 25 



3-4 

 2.8 



2-3 

 1.8 



4-5 

 3-5 

 2.8 



2.2 

 1-5 



6.2 



4-5 

 3-5 

 3- 

 2.4 



6.2 



4.o 



4-6 

 3-7 

 3-i 

 2.6 



2-3 



4-9 

 4-3 

 3-6 

 2.8 



2.5 



8-5 

 8.0 

 6.6 

 6.1 

 5-0 



8-5 

 6.8 

 5-8 

 5-0 

 3-9 



4-6 



4-9 

 6.0 

 7.0 

 8.0 



4.4 

 4-6 

 5-5 

 6-5 

 7-5 



4.0 

 5-0 

 5-5 

 6.0 



6.5 



4.0 

 5-0 

 5-5 

 6.0 



6.5 



