90 



CANADIAN FARM YEAR BOOK. 



Increase in Feed. 



Prof. G. E. Day, O. A. C, Guelph, 

 showed in experiments that the 

 quantity of feed consumed per 100 

 lbs. increase in hogs increases rapid- 

 ly with the weight. 



Increasing from 54 lbs. to 82 lbs. 



pigs required 3.10 lbs. of meal per 

 lb. gain. Increasing from 82 to 115 

 lbs. Bhotes reqffired 3.7 5 lbs. of 

 meal per lb. gain. Increasing from 

 115 to 148 lbs. hogs required 4.38 

 lbs. meal per lb. gain. Increasing 

 from 148 lbs. to 170 lbs. hogs re- 

 quired 4.55 lbs. of meal per lb. gain. 



DAILY GAIN AND KILLING PER CENT OF STEERS 



Age 



CLASS in 

 Days 



Short-horn, I year old 642 



2 year old 963 



3 year old 1321 



Hereford, 1 year old 663 



2 year old 1020 



3 year old. 1349 



Devon, 1 year old 634 



2 year old 1045 



3 year old 1311 



Aberdeen- Angus, 1 year old 668 



2 year old 1008 



3 year old. 1346 



Sussex, 1 year old 677 



2 year old 989 



3 year old 1285 



Red Polled, 2 year old 1002 



3 year old 1362 



Galloway, 2 year old 1027 



3 year old 1344 



Average Live 

 Daily Weight at Dressing 

 Gain Slaughter Per Cent. 



TABLE I. GRADING-UP A SCRUB HERD 



Disappearance of unimproved blood by the continuous use of pure bred sires on succed* 



ing generations. 



Sires 



Dams 



Offspring 



Generations 



Per cent, 

 purity 



Per cent, 

 purity 



Per cent, 

 purity 



Per cent. 



unimproved 



blood 



1 100 50 (>^) 50(1-3) 



2 100 50 75 (^) 25 (X) 



3 100 75 87.5 (7-8) 12.5 (1-8) 



4 100 87.5 93.75(15-16)6.25(1-16) 



5 100 93.75 96.87(31-32)3.12-41-32) 



6 .• 100 96.87 98.44(60-64) 1.5 (1-64) 



a Principles ©f Breeding by Davenport, p. 602. 



