254 



DISEASES OF CATTLE. 



The condition of the nursing cow and her milk is another potent 

 cause of trouble. The feed of the cow is important. The influence 

 of this is shown in the f ollowinff tables : 



Influence of feed on milk. {From Becquerel and Vernois.) 



In these examples the deterioration of the milk in casein on the less 

 nutritious winter feeding is very marked, although the relative 

 quantity of butter remains almost unchanged. In the case of the goat 

 the result is even more striking, the beet diet giving a very large 

 decrease of both casein and butter and an increase of milk sugar. 



The second table following, condensed from the Iowa Agricultural 

 Experiment Station Bulletin, giA'es the results in butter and total 

 solids when the same cows were fed on different rations in succession. 

 Each cow was fed a daily ration of 12 pounds corn fodder and 4 pounds 

 clover hay, besides the test diet of (1) 12^ pounds corn-and-cob meal, 

 and (2) 10 pounds sugar meal — a product of the glocuse manufac- 

 ture. This special feed was given seven days before the commence- 

 ment of each test period to obviate the effects of transition. The 

 analyses of the special rations are given below : 



Analyses of special rations. 



Constituents. 



Moisture 



Sails 



Fat 



Carbohydrates (heat formers) 



Woody fiber 



Proteids (flesh formers) 



The great excess of fat and nitrogenous or flesh-forming principles 

 in the sugar meal is very evident. 



