THE JERSEY 337 



butter fat or butter, and also produces a living calf, which has 

 been carried at least one hundred and fifty-five days during the 

 test. Class B is for seven-day official tests of butter-fat or butter 

 production. A bull is entitled to entry in the register of merit 

 after three of his daughters from as many different dams have 

 been entered on the year's authenticated test. " These tests are 

 supervised by a representative of a State, Provincial or National 

 experiment station or agricultural college, who certifies as to the 

 weight of the milk, and the percentage of fat it contains on the 

 days on which the cow is under official test." 1 



The required yield in authenticated tests of Jerseys is as follows : 



If the test is commenced the day the cow is two years old, or previous to 

 that day, she must produce within one year from the date the test begins, 

 250.5 Ib. butter fat. For each day the cow is over two years old at the begin- 

 ning of her year's test, the amount of butter fat she must produce in the year 

 is fixed by adding o.i (one-tenth) of a pound for each such day to the 250.5 Ib. 

 required when two years old. This ratio of increase applies until the cow 

 is five years old at the beginning of her test, when the required amount will 

 have reached 360 Ib., which will be the amount of butter fat required of all 

 cows five years old or over. These standards are based upon one complete 

 year's record, from the time of beginning, regardless of any time which may 

 be lost by being dry or calving during that period. 



Since the establishment of the authenticated butter-fat tests a 

 large number of cows have secured a place in the register of 

 merit. During March, 1919, there were entered 2812 cows in 

 official tests, while the previous March, 2703 animals were tested. 

 The ten leading Jersey cows in butter-fat tests for one year, 

 as recorded in the register of merit, are as follows : 



Vive La France 319616 produced 1031. 64 Ib. fat 



Sophie's Agnes 296759 produced 1000.07 Ib. fat 



Sophie igth of Hood Farm 189748. . produced 999.10 Ib. fat 



Spermfield Owl's Eva 193934 . . . produced 993.30 Ib. fat 



Old Man's Darling 2d 319617 . . . produced 983.68 Ib. fat 



Eminent's Bess 209719 produced 962.80 Ib. fat 



Dosoris Park Lily 233783 produced 957.43 Ib. fat 



Jacoba Irene 146443 produced 952.90 Ib. fat 



St. Mawes Poppy 219992 produced 952.28 Ib. fat 



Olympia's Fern 252060 produced 937.80 Ib. fat 



1 Register of Merit of Jersey Cattle, December, 1917. 



