FIFTIETH ANNUAL CONVENTION 23 



The cows that freshened in September, October, No- 

 vember, December and January averaged high in produc- 

 tion of both milk and butterfat. For each of these five 

 groups the average butterfat production was above 250 

 pounds, but for cows that freshened during other months 

 the average butterfat production never went above 250 

 pounds. The cows that freshened in April, May, June and 

 July were lowest in average, production of butterfat and 

 those that freshened in July had the lowest average income 

 over cost of feed. 



Considering butterfat production alone, October fresh- 

 ening ranks highest for the 64 associations, although No- 

 vember, December, September and January are not far be- 

 hind. The regularity with which yearly butterfat produc- 

 tion went down as the date of freshening approached mid- 

 summer is only a little less marked than the regularity and 

 rapidity with which yearly butterfat production went up 

 as the date of freshening advanced from June to October. 

 It must be remembered that these figures are the averages 

 for 64 associations and that they do not hold true for every 

 one of the associations. 



How the Months Ranked. 



Table 9, which was made from the averages of the 64 

 associations, shows that the cows that freshened in the fall 

 and winter months ranked high in production of milk and 

 butterfat and in income over cost of feed. 



TABLE 9. — Months when cows freshened ranked from 1 to 12 on 

 yearly records of production, costs, and income. 

 Month Milk production 

 Butterfat production 



Value of product Cost of roughage 



Cost of grain Total feed cost Income over 



January 4 5 5 7 5 6 4 



February 7 6 712 7 7 7 



March 8 8 8 8 10 10 6 



April 12 11 9 6 12 11 8 



May 10 10 11 11 11 12 10 



June 11 12 10 8 9 9 11 



July 9 9 12 10 8 8 12 



August . 6 6 6 5 6 5 9 



September 5 4 4 4 4 4 5 



October 112 1112 



November 3 2 3 3 2 3 3 



December 2 3 12 3 2 1 



