Arizona Agricultural Experiment Station 465 



-lover which can be used as roughage if supplemented by protein 

 )nccntrates. 



An experiment was planned to determine whether chopped cane 

 fodder supplemented by cottonseed meal can satisfactorily replace 

 alfalfa hay in the ration. Two lots of cows were used, five cows in 

 each lot. One lot was fed alfalfa hay, cottonseed meal, bran, and 

 silage, while the other lot received cane fodder (chopped), wheat 

 bran, cottonseed meal, and silage. The rations used were as fol- 

 lows : 



ration a r.\tion b 



Alfalfa liav 15 pounds Cane fodder (chopped) 15 pounds 



Silage 25 pounds Silage 25 pounds 



Mixture: Mixture: 



Wheat bran 5 i)arts Cottonseed meal 4 parts 



Cottonseed meal 1 part Wheat bran 2 parts 



The mixture of concentrates in each case was fed so that the 

 llolstein cows received one pound of concentrates to each five 

 pounds of milk produced daily, while the Jerseys received one 

 pound for each four pounds of milk. 



This test was run for two periods, and at the end of the first 

 l)eriod the rations were reversed, so that the lot of cows receiving 

 Ration A during the first period received Ration B during the 

 second period, and vice versa. 



This test was not continued for a long enough time to give 

 any conclusive data, but the results indicate that while alfalfa 

 hay as a roughage causes a larger milk production, cane fodder 

 can be used satisfactorily, if accompanied by three to four pound.! 

 of cottonseed meal to provide sufficient protein. More work will 

 be done along this line. 



MILK SUBSTITUTES FOR FEEDING CALVES 



On farms where the whole milk is sold and no separating is 

 done, many dairymen sell the calves, both bulls and heifers, as soon 

 after birth as a buyer can be found, and on some farms all grade 

 bull calves are killed at birth. This practice makes it necessary 

 for such farmers to replenish their milking herds from time to time 

 1jy the purchase of cows, thereby exposing the herds to possibh^ 

 infectiqn by disease germs, and preventing any intelligent improve- 

 ment by breeding. Where there is a market for whole milk at a 

 good price, one cannot afford to raise grade calves on it, as the 

 value of the milk consumed up to five months of age is greater 

 than the value of the calves. An experiment was planned and 



