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[3]

Added to this excellent milk production performance a further examination shows that this cow was carrying a calf for 273 days of the lactation period, and that she was only given 19 clear days of rest, instead of sixty to eighty, between the close of one laction period and the beginning of the next.

The following notes indicate the value of this milk production record.

a.

In 1885 a cow by the name of De Kol 2nd, was im- ported into the United States of America from Europe. Soon after her arrival in the United States of America, she produced 18,004 pounds of milk which established a world's record for the time. b. From a study in New York State, U.S.A. in 1935-36, where 27,800 cow records were examined, it was found the average cow in that state produced 8,265 pounds of milk and 315 pounds of butter fat in a

year.

In the milk production performance of Secundus Sylvia 1, Culty 1 theie are several significant results:

1. In each of ten months this cow has produced as much milk as a native cow does in a whole lactation period. 2. She has produced 5,122 pounds of milk more during a lactation period than the average farm cow in New York State U. S. A.

3. Her complete lactation production is equal to the complete lactation production of eleven native cows. 4. Her best day's performance was 47 pounds of milk. 5. In each of nine months she, more than once, made

40 or more pounds of milk a day.

6. She carried a calf for 273 days of the lactation period

February 1945.

West China China Union University,

Agricultural Research Institute, Chengtu, Szechuan, China.

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