29 



The four cows had been five to six months in milk at the beginning 

 of this experiment. They gained in live weight some ii8 pounds on 

 the Macon and some 69 pounds on the bran and gluten ration. It is 

 evident that the former ration with its less protein and wider nutritive 

 ratio was better suited to the putting on of flesh than for milk product- 

 ion, especially with animals that had been milked for a considerable 

 length of time. While it enabled the cows to produce a fair yield 

 and to lay on a little flesh, it lacked the digestible protein necessary 

 to stimulate the flow of milk. If a poor quality of hay had been em- 

 ployed in place of the extra quality of hay and rowen actually fed, 

 the difference in favor of the bran and gluten, it is believed, would 

 have been more marked. The food cost of milk and butter fat pro- 

 duced by the Macon ration was respectively 10 and 12.9 per cent 

 above that produced by the bran and gluten ration. 



MOLASSES FEEDS VS. HOME MIXED GRAIN RATIONS. 



In Bulletin 112 issued by the Station, the writer stated that a ready 

 ration for dairy stock whether proprietary or home mixed should be 

 bulky, palatable, free from mould and rancidity, and should contain 

 at least 16 lbs. of digestible protein and 70 pounds of digestible 

 organic nutrients, in 100 lbs. and not over 9 per cent of total fibre. 

 The propi ietary molasses feeds may be regarded as satisfactory in so 

 far as bulk and palatability are concerned ; they do not meet the other 

 requirements however, in that they have been found to average but 

 9.4 lbs. of digestible protein and 61 lbs. of total digestible organic 

 nutrients in 100 lbs. 



The comparison may be carried still further by studying the com- 

 position and cost of the following grain mixtures : 



I. 2. 



100 lbs. Bran, 

 100 lbs. Flour Middlings, 

 7 lbs. (7 qts.) Molasses Feeds 150 lbs. Gluten Feed, 



contain : Mix and feed 7 lbs. (8-9 qts.) daily. 



7 lbs. contain : 

 .66 lbs. digestible protein, 1.25 lbs. digestible protein, 



4.26 lbs. digestible organic matter, 5.00 lbs. digestible organic matter. 

 7 lbs. cost 9.8 cents, 7 lbs. cost 11.5 cents, 



lib. digestible protein costs 9.36 i lb. digestible protein costs 6.1 cents, 

 cents, I lb. digestible organic matter costs- 



I lb. digestible organic matter costs 2.30 cents. 



2.30 cents. 



