56 



MASS. EXPERIMENT STATION BULLETIN 158. 



Table II. — ■ Duration of Experiment, 1913. 



Dates. 



Corn Meal Ration. 



Molassine Meal Ration. 



May 2-May 23, 

 June 6-June 27, 



Fancy II., Cecile, White, . 

 Amy, Betty, Samantha II., 



Amy, Betty, Samantha II. 

 Fancy II., Cecile,' White. 



1 June 13 to July 4 for Cecile. 



Twenty-two days elapsed between the two parts of the e.xperiment in 

 case of Cecile, as she could not be induced to eat the full ration of Molas- 

 sine (4 pounds), and it was finally found necessary to reduce the amount 

 to 3 pounds and add 1 pound of corn meal. The intermediate period for 

 the other cows was fourteen days. 



Care and Feeding of Animals. — Thej'' were kept in roomy stalls, 

 carded daily and turned into a protected barnyard during each pleasant 

 day. They were fed twice daily; the hay was given some time before 

 milking in the afternoon, and the grain just before milking, wliile in the 

 morning the grain was given just before and the hay just after niilking. 

 Water was supplied constantly by aid of a self-watering device. 



Character and Cost of Feeds. — The hay was an admixture of timothy, 

 red top and some clover. Unfortunately, it varied in texture, and during 

 part of the experiment it was rather coarse, which caused the animals to 

 leave small amounts on different days. The bran was of the spring 

 variety. The cottonseed meal w^as of fair quality, containing about 39 

 per cent, of protein. The corn meal was local-ground and of good quality. 

 The jMolassine meal has already been described. The market price of 

 the several feeds at the time of the experiment was as follows: — 



Hay, 



Corn meal, 

 Cottonseed meal. 

 Wheat bran, 

 Molassine meal, . 



Per Ton. 

 $23 00 



26 00 

 .34 00 



27 00 

 40 00 



Weighing the Animals. — Each cow was weighed for three consecutive 

 days at the beginning and end of each half of the trial, before the after- 

 noon feeding. 



Sampling Feeds and Milk. — The hay w-as sampled at the beginning, 

 middle and end of each half of the trial in the usual way, as described in 

 other experiments of tliis character. The grains were sampled daily, and 

 the samples preserved in glass-stoppered bottles and brought to the labo- 

 ratory at the end of each half of the trial for dry-matter determinations 

 and complete analyses. 



The milk of each cow w^as sampled daily for five conseeutive days for 

 each week of the trial. The usual method of sampling w'as followed. 



