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of food supplied largely dependent upon the amount of milk 

 produced, provided that the cows are at all times adequately 

 ied. 



THE EFFECT OF BREWERS' GRAINS ON MILK. 



Object. In a district where brewers' grains are largely 

 used for the feeding of dairy cows, and where opinion largely 

 differs as to their merits as a food and their specific effect upon 

 the produce, an experiment dealing with this matter might 

 reasonably be expected to yield interesting results. Such an 

 experiment was conducted at Offerton during the winter of 

 1905-6, the special object in view being to discover the effect 

 on the quantity and quality of the milk of a ration containing 

 a certain amount of brewers' grains as compared with a ration 

 which contained none, and thus to determine the general 

 effects of brewers' grains when used under ordinary circum- 

 stances. 



EXPERIMENT I. 



Preliminary trials. A number of cows were tested in the 

 usual manner, ten cows being finally selected for the purpose 

 of the experiment, and they were arranged in two lots of five 

 -according to the yield and quality of the milk. Unfortunately, 

 owing to the scarcity of grains at the time, the experiment 

 could not be commenced for some weeks after the preliminary 

 trials were completed. The two lots of cows, however, were 

 ied in the meantime exactly alike. The experiment com- 

 menced on December 1G, 1905. The cows were milked three 

 times a day as usual, and the milk was sampled and tested as 

 in all the other experiments. 



At the end of the preliminary trials, the two lots stood as 

 follows : 



Average yield of milk Per cent, of Average 



per cow per day. butter-fat. live-weight. 



Lot 1 28-36 pints ... 3'57 ... 1,156 Ib. 



Lot II 28 08 pints ... 3'55 ... 1,132 Ib. 



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