EXPERIMENT STATION BULLETINS. 



177 



Holstein cows and, below, their calves sired by the Holstein bull, Count 

 Colantha Alban, 25148, shown in illustration No. 3. 



The upper row of figure 5 represents two Shorthorn grade cows pur- 

 chased for the College grade dairy herd in 1904; directly beneath these 

 cows is to be seen their calves sired by the Holstein bull, Count Colantha 

 Alban, (111. 3). We wish to direct the attention of our readers just 

 here to the fact that in this case a Holstein bull was bred to two 

 cows of his own breed, and two high grades of another breed, and 

 that all four calves show Holstein type in marked degree. It is un- 

 fortunate that all the breed type characteristics existing in these in- 

 dividuals cannot be brought out by the camera. This group of illus- 



LL r ; T RATION NO. 3. 



trations demonstrates the quality known as prepotency in no small 

 degree. Breed prepotency is shown in the characteristic Holstein type 

 of all four calves in the illustration and individual prepotency espe- 

 cially in the likeness of the two calves from the pure bred cows to 

 their sire. 



DESIRABILITY OF CO-OPERATION OF BREEDERS. 



It would seem highly desirable that some forms of co-operation, in 

 breeding methods, should be established by communities, such for in- 

 stance as the joint ownership and use of males by several parties rather 

 than one. In theory this proposition sounds well, but in actual prac- 

 tice it has not worked satisfactorily in the majority of instances, as 

 illustrated by the universally undesirable results from the formation 

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