220 DAIRYING. 



or aborting, and the requirements for entry vary with the age, 

 being not less than 7.2 lbs. butter-fat in seven consecutive days 

 for a heifer calving at just two years of age or younger, and in- 

 creasing proportionately to not less than 12 lbs. butter-fat for a 

 cow calving at five years old or older; there being no increased 

 requirements for increased age after a cow reaches the age of 

 five years. Only bulls having four or more daughters which 

 have been entered in the Advanced Register on official records 

 of butter-fat are accepted for entry. 



The rules for the entry of cows in the H.-F. Advanced Register 

 are very stringent, being designed to place every H.-F. record 

 beyond even a shadow of doubt. Every milking during the 

 period of test is watched, weighed, sampled, and tested by a 

 representative of a State Agricultural College; and thus, because 

 of resulting expense, the bulk of its records are for short periods, 

 mainly for one week. It will be readily admitted that 18 lbs. 

 of butter-fat will make 21 lbs. of the best of butter, or an average 

 of three pounds butter per day when 18 lbs. of fat is produced 

 in seven consecutive days, and that very few cows other than 

 Holstein-Friesian have ever under strict rules produced such an 

 amount. The records of the H.-F. Advanced Register show that 

 224 H.-F. cows have produced officially in excess of 18 lbs. 

 butter-fat; of which 82 cows have produced between 18 and 

 19 lbs.; 64 cows, between 19 and 20 lbs.; 46 cows, between 20 

 and 21 lbs.; 15 cows, between 21 and 22 lbs.; 8 cows, between 

 22 and 23 lbs.; 6 cows, between 23 and 24 lbs.; i cow, between 

 24 and 25 lbs.; i cow, between 25 and 26 lbs.; and i cow, 

 over 27 lbs. It must be remembered that while many of these 

 records were made by cows much under five years of age, there 

 were a large number of records made by two and three-year-old 

 heifers, which were, considering age, proportionately as large, 

 yet fell short of the i8-lb. limit required for this list. 



As to the per cent of fat in average H.-F. milk, 1545 cows and 

 heifers of all ages entered in the 17th volume of the H.-F. 

 Advanced Register, of which more than one-half were heifers, 

 produced in seven consecutive days an average of 376.7 lbs. 

 milk, containing 12.75 lbs. butter-fat, showing an average of 

 3.39 per cent fat. There were 71 cows and heifers producing 

 over 18 lbs. butter-fat; and these cows averaged 540.9 lbs. milk, 



