168 HATCH EXPERIMENT STATION. [Jan. 



Results. — The following are the most important results : — 



1. Cotton-seed meal with a minimum percentage of oil 

 did not alter the percentage composition of the milk. 



2. The addition of one-half to three-fourths of a pound 

 of cotton-seed oil to the cotton-seed meal appeared to in- 

 crease the fat percentage in the milk about four-tenths of 

 one per cent. (5 to 5.4), and this increase was maintained 

 during the six weeks of the feeding period. 



3. The substitution of Cleveland flax meal for the cotton- 

 seed meal and oil resulted in a decrease of the fat in the 

 milk to about the percentage found in the first period, while 

 the nitrogen percentage was increased. This change in 

 composition was probably due to the removal of the cotton- 

 seed oil from the ration, and not to the influence of the flax 

 meal. 



4. Cotton-seed meal with minimum oil caused no marked 

 variation in the chemical composition of the butter fat. 



5. The addition of cotton-seed oil to the cotton-seed meal 

 ration produced a noticeable increase in the melting point 

 and iodine number of butter fat. 



6. Cotton-seed meal with a minimum oil produced a firm 

 butter. 



7. The addition of cotton-seed oil, while it increased the 

 melting point of the butter fat, produced a softer, more 

 yielding butter than that produced by either the cotton- 

 seed meal or the standard ration. 



8. An excess of cotton-seed oil in the ration is likely to 

 affect the health of the animal. 



