90 MILK SURVEY OF THE CITY OF ROCHESTER 



In Table No. 38 it is to be noted that the number of hours of human 

 labor per cow increases gradually with the increase in the volume of 

 milk produced. This is because of the length of time required to milk 

 large producing cows, and because the feeding and other services require 

 more time for large producing cows than for small producing cows. The 

 use of brewers' grains on the farms with larger producing cows required 

 more time for the hauling of grain. On the other hand, when these hours 

 of labor are compared with the quantity of milk produced, the opposite 

 condition is true. It is seen from Column No. 3 that the hours of labor 

 per 100 pounds of milk are very much larger with small producing cows 

 than the hours of labor per 100 pounds of milk for the large producing 

 cows. In shoct, less labor is required in connection with the production 

 of the same quantity of milk from large producing cows than small pro- 

 ducing cows. 



In the last two columns it will be noticed that the rate charged for 

 the human labor was nearly the same for all cows ; but that the rate re- 

 ceived increased from a loss of 29 cents per hour to a maximum gain of 

 25.3 cents. While this did not pay the cost of the labor, yet the last 

 column shows that the increase in the volume of milk produced per cow 

 brought in a much larger labor income. 



The quantity of feed required to produce 100 pounds of milk is 

 shown for each of the same groups of farms producing from less than 

 4,000 to over 9,000 pounds per cow annually, in Table No. 39 : 



TABLE No. 39 

 RELATION OF PRODUCTION PER COW TO FEEDING 



POUNDS OF GRAIN POUNDS SUCCULENT FEED POUNDS DRY FORAGE 



Production Per Per IOC libs. Per. PerlOOlbs. Per PerlOOlbs. 



Per Cow. Cow. Milk. Cow. Milk. Cow. Milk. 



4000 or under 1381 48.6 5194 1828 4738 1668 



4001-5000 1661 35.5 7087 5L6 4752 017 



5001-6000 2023 37.1 11285 2072 3199 587 



6001-7000 2480 38.3 11263 174.0 3410 527 



7001-8000 3250 43.6 10657 143.1 4074 547 



8001-9000 4342 52.1 12880 154.7 3548 426 



9001 and over 4245 43.5 12578 129.0 3874 397 



Table No. 39 shows clearly that while the pounds of grain per cow 

 increases with increased production, the pounds of grain per 100 pounds 

 of milk are approximately the same. The pounds of succulent feed also 

 increase gradually with the production per cow; but decrease per 100 

 pounds of milk produced. The pounds of dry forage per cow diminish 

 with an increase in production and also to a much larger extent diminish 

 per 100 pounds of milk. The number of cows in each of these groups and 

 the quantity of milk produced by them as well as the percentage of the 

 total milk sold to the City of Rochester in each group is shown in 

 Table No. 40: 



