508 



Period 

 No. 



IOWA ACADEMY OF SCIENCE Vol. XXV, 19 IS 

 TABLE III. 

 Feed Consumption by Ten-day Periods. 



Calf No. ooo 



Milk 

 lbs. 



Salt 

 lbs. 



Calf No. 36 o 



Milk 

 Ibo. 



Salt 

 lbs. 



In the first 10 day period Calf No. 355 suclsed for 6 days and 

 No. 366 for 3 days. Tlie last period for No. 355 contains only 

 8 days and that for No. 366 only 6 days as No. 355 died when 

 208 days old and No. 366 at the age of 176 days. 



It will b€ noted that up until he was ahout 100 days old No. 

 355 had an increasing- capacity for milk but from that time the 

 appetite remained reg-ular for a little over a month and then 

 declined thouuli there was an increase in milk consumption for 

 a week or so before death. In the case of No. 366 maximum 

 capacity was reached earlier and remained constant until about 

 the same length of time before death when it again increased. 



The animal, No. 355, that received no salt until 70 days old, 

 showed an enormous appetite for salt during the first 30 days 

 in which it was available. From this time on his salt consump- 

 tion decreased and with the exception of a short time between 

 the ages of 170 and 190 days did not again reach a marked 

 elevation during the experiment. Calf No. 366 received salt 

 earlier in his life and did not at anv time have such an exces- 



