ADVANCED REGISTRY 69 



more highly colored than some markets desire. On the other 

 hand, a few animals of Guernsey blood in a herd of Holsteins 

 quite naturally increase the color as well as the fat content and 

 enhance its selling- qualities. The length of the lactation period 

 of this breed varies with the intensity of dairy temperament and 

 with their feed and handling, as with other breeds. 



Adaptations. — There are a few places where the qualities of 

 the Guernsey are particularly needed. She fills rather better 

 than any other dairy breed, the needs of those small farmers who 

 do most of their own work and who have but a moderate quantity 

 of feed to use. Their problem is how to convert a moderate- 

 sized hay stack and other material into a product which will 

 bring the most money. Next to the Jersey the Guernsey con- 

 verts the largest proportionate amount of her feed into milk 

 fat (Fig. 25), but since the modern Jersey is rather sensitive 

 for general farm life in the northwestern sections of the United 

 States, the Guernsey is being largely adopted as her substitute. 

 A second peculiar place is, as mentioned, in the herds of some of 

 the breeds producing a very white milk for market. 



Advanced Registry. — In 1901 a system of advanced registry 

 was adopted and though the test period at first covered either 

 seven days or a year the rules were soon changed to recognize 

 only the full year test. Records included both the pounds of 

 milk yielded and the fat produced as measured by the Babcock 

 test. " The owner of the cow keeps the milk records in detail 

 throughout the year." Once every month an official represen- 

 tative of an experiment station or agricultural college visits the 

 f arm to confirm the yields recorded by the owner and to test the 

 milk produced at that time. A two-year-old cow will not be 

 admitted into advanced registry unless she produces 6000 

 pounds of milk and 250 pounds of fat. Older cows are required 

 to produce 3.65 pounds of milk per day more, up to five years of 

 age, and for each day past two years of age at the time of begin- 

 ning, one-tenth of a pound of fat additional is required. Mature 

 cows are admitted upon the production of 360 pounds of fat per 

 year. Bulls are admitted to advanced registry when two or 

 more of their daughters have been admitted. 



