Ill 



4. The weight ol" cows in milk. 



The cows used were pure bred Jerseys of only av- 

 erage productive ability. In selecting them attention 

 was paid to the milk flow, length of time in milk, size, 

 aod age. 



Plan of the Experiment 



Two lots of five cows ea h were used in the experi- 

 ment. They were fed during a fourteen day prelimi- 

 nary period to accustom them to the rations. They 

 were then fed for a twenty-eight day test period as 

 follows : 



LOT I received a mixtur of cor leal, 7 parts, and 

 high grade cottonseed meal, 8 parts, with corn 

 silage 

 LOT II received velvet beans and pods, ground, and 



corn silage. 

 At the close of this period seven days were used to 

 reverse the rations of the two lots. 



For the second twentj-eight day test period they 

 were fed as follows: 



LOT I received velvet beans and pods, ground, and 

 sila:;e. 



o 



LOT II received a mixture of corn meal, 7 parts, and 

 high grade cottonseed meal, 8 parts, with 

 silage. 



Feeds Used 



The feeds used were all of good quality. The shelled 

 corn was ground into a coarse meal. The beans in the 

 pods were found to be approximately one-third j ods 

 and two-thirds beans by weight, and were fed on the 

 basis of the shelled beans — that is, one and one-half 

 pounds of beans and pods were considered to be the 

 equvalent of one pound of beans. 



The mixture of corn meal and cottonseed meal was 

 fed at the rate of one pound for each tw^o and one-half 

 pounds of milk produced, while the beans and \ ods 

 were fed at the rate of one and one-half pounds for 

 each two and one-half pounds of milk produced, as 

 explained before. The silage was made of corn cut in 

 the dent stage. Silage was the only roughage used 

 and the cows were given all they would consume. Wa- 

 ter was kept before the cows at all times and salt was 

 given them at regular intervals. Cottonseed meal or 

 a mixture of com meal and cottonseed meal is general- 

 ly used in this section for the concentrate part of a ra- 

 tion for dairy cows. It was the desire to make a com- 



