46 ILLINOIS STATE DAIRYMEN'S ASSOCIATION 



Vitamine B or a water-soluble vitamine, is a vitamine 

 which prevents beri beri, a disease which the Filipinos, 

 Japanese and Chinese used to have when they used all pol- 

 ished rice. We do not need to worry about vitamine B in 

 stock feeding, because ordinary grains and hays are rich 

 in it. That is an exceedingly important matter for us, be- 

 cause a certain concern has been carrying on extensive 

 propaganda to try and persuade us to feed yeast to live- 



stock. '-^^mm 



We have experimented with pigs, starting at weaning 

 time, and yeast feeding has not been beneficial or eco- 

 nomical, no matter whether fed dry or fermented. The 

 pigs in the latter case did not appreciate their blessings. 

 The action of yeast is to change carbohydrates into alcohol, 

 and we got a good experimentation with these pigs. The 

 results, I think, with the other experiments carried on by 

 the men with calves in our station, and with swine, show 

 that we do not need to feed yeast to dairy cows or calves. 



Vitamine C, I could discuss in considerable detail. I 

 will not. Lack of vitamine C causes scurvy, which affects 

 only man, monkeys and guinea pigs. It does not affect 

 farm animals, therefore we do not need to worry about 

 vitamine C in stock feeding. 



I shall discuss this afternoon vitamine D, which has 

 a very great and profound relationship to the mineral nu- 

 trition of animals. 



Vitamine E, the last vitamine, or Vitamine X as it is 

 sometimes called, was found by Evans of California. We 

 know very little about it, yet it is concerned with repro- 

 duction, and if animals do not secure this vitamine they 

 are not able to reproduce. The ordinary feeds contain 

 vitamine X; I doubt whether vitamine X is going to play a 

 very important part in our study of vitamines in relation 

 to stock feeding. 



Now for a short summarizing with one or two general 

 statements. What do all of these new discoveries in feed- 

 ing mean in the practical feeding of dairy cows? There 

 have been a tremendous number of experiments carried on 

 by scientists in various parts of the world. All these dis- 



