Influence of Food on Kind of Milk 323 



experimenters also placed milk within a silo exposed 

 to the air for an hour, and silo air was forced through 

 the contents of some cans. In seven out of twenty 

 tests no silage odor could be detected, and it was less 

 in any case than when silage was fed before milking. 

 Canadian experiments, on the effect of feeding tur- 

 nips, seemed to warrant the conclusion that the mere 

 presence of a strong turnip flavor in the stable did not 

 affect the milk, and that when the turnips were fed in 

 small quantity (one peck) daily no flavor was imparted, 

 but that when one bushel or more was given the flavor 

 appeared whether the turnips were fed before milking 

 or after. On the other hand, in a Norwegian experi- 

 ment as higlj as 2.8 bushels of turnips were fed to 

 cows daily, and no turnip taste could be detected in 

 the milk. The cows were fed in one place and milked 

 in another, and so the experimenter concluded that 

 when this taste is observed it is due to absorption by 

 the milk after it is drawn. That warm milk may ab- 

 sorb odors is shown by Russell. These observations 

 illustrate fairly the somewhat inclusive condition of 

 the testimony on the points in question. 



NOTE. Physiological disturbances may result from feeding a 

 ration so selected or treated that it is greatly deficient in certain 

 nutrients. In recent experiments by Jordan, Hart and Patten, the 

 deficiency of phosphorus compounds in the rations of milch cows 

 appeared to cause, among other effects, a marked diminution of 

 the proportion of fats in the milk solids. By-product feeding stuffs 

 similarly deficient might cause a similar result. 



