180 



Agbioulttjeal Experiment Station, Ithaca, ]Sr, 



As would be expected, the manure made in experiment No. 1, where 

 skim milk formed a considerable portion of the diet, was particularly 

 poor in nitrogen and phosphoric acid. Not only was the skim milk 

 more digestible, which resulted undoubtedly from a greater proportion 

 of these fertilizing constituents being used to build up the animal body 

 than was the case in experiment No. 2 where less digestible food was 

 fed, but the increased secretion of urine from the skim milk diet 

 required so great an amount of bedding to keep the calves clean that 

 the manure was necessarily poor. 



The difference in the j^ercentage of water of the manure of these 

 two experiments must not be taken in any way to represent the differ- 

 ence of water in the excrement, for in experiment No. 1 it was found 

 necessary to give nearly double the amount of straw bedding that was 

 given to the calves when hay and grain formed the ration. The excre- 

 ment recovered from these two trials with calves will not differ mate- 

 rially in quantity or quality from that recovered in ordinary practice, 

 for the food fed did not differ materially from that usually fed through- 

 out the country. So that the average value recovered per 1,000 

 pounds of live weight per animal per day, which is nearly seven cents, 

 will represent the value of the excrement produced from this class of 

 animals throughout the State as well as on the University farm. 



Experiments with pigs. — Three trials were made with pigs by keep- 

 ing them confined on galvanized iron pans, as described with sheep. 

 The pans were large enough to afford comfortable quarters for the pigs, 

 and enough cut straw was used for bedding to keep them clean. 



In each trial three thrifty grade Poland China pigs were selected 

 and the food fed was the same kind that had been fed to these pigs for 

 several weeks previous to the experiments. The following tables give 

 the food consumed and the details of each experiment. 



Food Consumed. 



