DAIRY COWS. 



209 



yield of milk is decreasing more rapidly than before, the 

 quality is generally improved to some extent, the variation 

 being, as a rule, within i per cent. Variations of several 

 per cents of fat may sometimes occur from day to day, or 

 milking to milking, in the milk from single cows; variations 

 amounting to I per cent are common. Herd milk varies 

 much less, the percentages of fat on subsequent days being 

 as a rule within two tenths of one per cent, and only excep- 

 tionally near one per cent. 



RESULTS OP TESTS OF DAIRY BREEDS 



Conducted by American Agricultural 

 Experiment Stations. 



Breed. 



New York 



(Geneva): 



Jersey 



Guernsey 



Holstein 



Ayrshire 



Short Horn 



Devon 



American Hoi- 



derness 



Maine: 



Jersey 



Holstein 



Ayrshire 



New Jersey: 



Jersey 



Guernsey 



Holstein 



Ayrshire 



Short Horn . . . 



Average 



Yields per 



Lactation 



Period. 



Milk. Fat 



lbs. 



5045 

 5385 

 7918 

 6824 

 6055 

 3984 



5721 



5460 

 8369 

 6612 



3 7695 



4 i 7446 



3 I 8455 



4 7461 

 3 ,10457 



lbs. 



282.1 

 285 5 

 266.1 

 244.8 

 269.0 

 183.3 



297 

 285 

 233-0 



376.3 

 379-0 

 300.2 



275-3 

 396.3 



5.60 

 5 30 

 3-36 

 3.60 

 4.44 

 4.60 



5-5° 

 3-47 

 3-67 



4- 

 5-09 



3-55 

 3-69 

 3-79 



Average Cost of 



Food 



Eaten 



per Day. 



cents 



12.4 

 12.5 

 13-9 

 13-5 

 12.7 

 10.3 



12.2 



16.2 

 19.5 

 17. 1 



16. 1 

 14.9 



19-3 

 15.0 



15-4 



Produc- 

 ing TOO 



lbs. Milk. 



1 13.0 

 85.2 

 94-9 



87.1 

 78.1 

 79-3 

 76.0 

 79.2 



Produc- 

 ing I lb. 

 Fat. 



cents 



16. 1 

 16.1 

 19. 1 

 20.2 

 17.2 

 20.5 



20.1 



20.4 

 25a 

 26.8 



17.9 



15-3 

 22.4 

 20.6 

 20.6 



A-vernges for all Breeds and Lactation Periods. 



Jersey 



Guernsey 



Holstein 



Ayrshire 



Short Horn 



Devon 



American Hol- 

 derness 



Total 



13-9 

 13-5 

 17.2 

 145 

 14-3 

 10.3 



94-7 

 82.8 

 74-7 

 78.5 

 78.7 

 94.0 



76.0 



17.4 

 15-8 

 21.5 

 21. S 

 19.4 

 20.5 



20.1 



