18 PROCEEDINGS OF THE ROYAL SOCIETY OF QUEENSLAND. 



IMiLK Production, Feeds, and Body Weights. 



Tables 10 and 11 give the data by groups relative to 

 yields, feeds, and alterations in body weights. 



Table 12 deals with the starch equivalents and content of 

 digestible protein of the rations. 



Table 11 . — Group Rations and Gains in Body Weights. Forty-day Periods. 



Comparing the yields, it is seen that prickly pear as the 

 sole roughage produced more milk but less butter-fat than did 

 the hay roughage. 



The part roughage of prickly pear (prickly pear and hay) 

 likewise produced more milk and less fat than the whole 

 roughage of hebj. 



The part roughage of prickly pear produced more milk 

 and more butter-fat than the whole prickly psar roughage. 



Prickly pey reduced the fat percentage in the milk, but 

 did not appreciably alter the content of soKds-not-fat. 



