OAT BY-PRODUCTS FOR FARM STOCK. 



125 



Care of the Animals. — The animals were cared for in the usual way, 

 as described in previous experiments. 



Sampling Feeds ami Milk. — The hay was sampled three times during 

 each half of the trial, by taking forlcfuls here and there, running the 

 same through a power cutter, sub-sampling, and placing the sub-samjiles 

 in glass-stoppered bottles which were brought to the laboratory at once, 

 dry matter determinations made, and composite samples analyzed. The 

 grain mixtures were sampled each time a new lot was mixed, and the 

 samples placed in glass-stoppered bottles for analysis. The oat feed was 

 sampled at regular intervals during the experiment. 



The milk was sampled for five consecutive days for two or three weeks 

 during each half of the trial, preserved with formalin, and analyzed for 

 total solids and for fat by the Babcock method. The usual method of 

 sampling was followed as described in previous experiments. 



Table VI. — Grain Mixtures fed (Pounds). 



Notes of the'Experiment. — In Experiment I, a preliminary test of the 

 oat feed used showed it to contain 4.95 per cent of protein and 26.89 

 per cent of fiber, and it was regarded as a representative lot. The final 

 analysis, however, made from a number of different samples, gave 7.12 

 per cent of protein and 22.62 per cent of fiber, indicating the presence of 

 an undue amount of oat middUngs. The results of this experiment are 

 reported, but they are not included in the average. 



In Experiment III, twelve cows were employed, but during the progi-ess 

 of the experiment Colantha II showed such an abnormal milk shrinkage 

 that she could not be continued, and the experiment was completed with 

 eleven cows. 



