96 



decrease in the quantity of milk produced by both lots of 

 cows in both Experiments K and L. 



Practical feeders are well aware that a change of diet is 

 beneficial to the general health of cattle. It may be that the 

 above changes are an indication of the length of time that 

 any particular ration is likely to produce the most economical 

 results. 



Another reason, as previously mentioned, for tabulating 

 the fluctuations during the first eight weeks of these experi- 

 ments is to make the results more comparable with those 

 obtained in Eixperiments I and J in Bulletin No. 2. 



At the commencement of Experiment K both lots of cows 

 had gone off their milk, though only to a slight extent. This 

 was to be expected. It must be noticed that lot I. had gone 



TABLE XXXVIII. AVERAGE QUANTITY OF MILK IN PINTS PER 

 LOT PER DAY FOR 8 WEEKS AND 10 WEEKS. 



* The times of milking were 5a.m., 12-30 p.m., ami 6-30 p.m. 



