286 THE BREEDS OF LIVE-STOCK 



period of seven consecutive days have now been made. 

 These tests are annually classified according to the age of 

 the cows at date of calving. A summary of such records 

 for a single year will serve to show the butter-making 

 possibilities of the elite of the breed. During the fiscal 

 year 1914-15, 3115 full-aged cows averaged: milk, 475.8 

 pounds; butter-fat, 16,947 pounds. Six hundred and 

 sixty-one senior four-year-olds averaged : milk, 453.6 

 pounds; butter-fat, 16.405 pounds. Nine hundred and 

 twenty-eight junior four-year-olds averaged : milk, 444 

 pounds; butter-fat, 16.076 pounds. Nine hundred and 

 fifty-five senior three-year-olds averaged : milk, 419.4 

 pounds; butter-fat, 14.865 pounds. One thousand two 

 hundred and three junior three-year-olds averaged : milk, 

 398. 7 pounds; butter-fat, 14.194 pounds. One thousand 

 one hundred and two senior two-year-olds averaged : milk, 

 360.1 pounds; butter-fat, 12.603 pounds. Two thousand 

 seven hundred and seventy-nine junior two-year-olds 

 averaged : milk, 324.1 pounds; butter-fat, 11.434 pounds. 

 Two thousand six hundred and twenty-five cows of the 

 breed have official records greater than 20 pounds of 

 butter-fat in seven days, and one thousand and eighty- 

 four cows of the breed have official records greater than 

 80 pounds of butter-fat in thirty days. Such records are 

 usually made at ten to fifty days after parturition. A 

 lapse of at least five days is required. There can be no 

 doubt as to the correctness of these records. In many 

 cases, especially when the yield was exceptionally large, 

 the cows were re-tested for periods ranging from twenty- 

 four to forty-eight hours by representatives of the experi- 

 ment stations, who kept constant watch in order that no 

 milk or cream should be introduced into the udders sur- 

 reptitiously. 



