482 Scientific Proceedings^ Royal Dublin Society. 



Goat 2. 



1. Reduction in daily ration (change from ration A to B) produces — 



(a) No change in milk yield. 



(J) Reduction in daily per cent, fat of 0'25 (3'75 to 3'5). 



(c) Reduction in daily total fat of 0-015 lbs. (0-135 to 0-120). 



2. Addition of 1-06 lbs. wheaten starch to daily ration (change from ration 

 B to C) produces — 



(«.) No change in milk yield. 



ih) Increase in daily per cent, fat of 0-75 lbs. (3-5 to 4-25). 



(c) Increase in daily total fat of 0-03 lbs. (0-12 to 0-15). 



3. Addition of 1-13 lbs. wheaten starch to daily ration (change from ration 

 E to F) produces — 



(a) No change in milk yield. 



(b) Increase in daily per cent, fat of 0-75 (5-0 to 5-75). 



(c) Increase in daily total fat of 0-02 lbs. (0'125 to 0-145). 



Sj. Substitution of 0-5 lbs. fat for 1-13 lbs. starch (change from ration 

 r to F^) produces — 



(a) No change in milk yield. 



/ The fact that this increase is of 

 (J) Increase in per cent. fat. j short duration, and that the yields 

 U\ total fat. I tend to return to original level, dis- 



(counts this result. 



4. Substitution of 1-13 lbs. casein for 0-5 lbs. fat, and hence for 1-13 lbs. 

 starch (change from ration Fj to G), produces — 



(ft) No change in milk yield as compared with ration F. 

 (&) „ „ daily per cent, fat „ „ „ „ 



{c) „ „ daily total fat „ „ „ „ 



5. Reduction in daily ration (change from ration G to H) produces — 



(ft) No change in milk yield. 



(6) Reduction in daily per cent, fat of 0-5. 



(c) Reduction in daily total fat of 0-025 lbs. (0-145 to 0-120). 



