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OFFERTON BULLETIN No. 1. 



Experiments on the Feeding of Dairy 



Cows. 



Published October, 1905. 



BY C. BRYXER JONES. 



MODERATE VERSUS HEAVY RATIONS OF 

 CONCENTRATED FOOD. 



Object The special object of these experiments was- 

 to test the effect of moderate and heavy rations respectively 

 of concentrated food upon the quantity and quality of milk. 

 It was not the intention of those responsible to enter upon the 

 larger question of the effect of food upon milk generally, but 

 rather to determine, once the cows receive an adequate allow- 

 ance of concentrated food in their daily ration to keep them 

 in a good and thriving condition, whether there is any real 

 advantage in increasing this allowance with the idea of 

 improving the milk either in yield or quality, or both. 



Two series of experiments have now been completed, in 

 each of which two lots of cows were fed with different 

 quantities of the same concentrated food, all other conditions 

 being the same. 



Sampling and testing I n the preliminary trials, the 

 cows were tested individually at weekly intervals. In all the 

 experiments, the mixed milk of each lot of cows was sampled 

 daily, morning, noon, and evening, each sample being placed 

 in a bottle and labelled. There were, thus, every day, three 

 samples taken from each lot. The total milk of each lot was- 

 weighed at each milking, and the quantity recorded on 

 sheets printed for the purpose. The butter-fat was estimated 



