1478 



CAlTIvE 



of the skim milk from the full food bill of each animal, values were 

 obtained for the cost of food per pound of butter fat produced. These 

 values varied from a minimum of ^.^d to a maximum of 14. 9^? per pound 

 with a mean of 9.41^. 



The variations of the percentage of fat deserve special mention. The 

 following table gives a summary of the data for 260 days. 



TABI.E IV 



The considerable difference between the percentage of fat in the 

 morning milk and the evening milk is due to the difference in the time elaps- 

 ed since the preceding milking. The greater the difference, between the 

 day and night intervals, the greater is the difference in the mean fat con- 

 tent of the milk at the two mil kings. 



1096 -Feeding Trials of Dairy Cows in Denmark. -I/Und, a v. in soth Comptc rendu 



lilt Laboratoiie d'essai-i de Copenhigue (coinunicated to the International .'nstitute of 

 Agriculture by its Danish Corrcspontlent. Baron Rosenkrantz) . 



A. Trials uith Mangels and Turnips. — The trials were intended to 

 compare the feeding value of mangels and turnips, and also the amount 

 of dry matter of the kinds moderately rich in this constituent, e. g. mangels, 

 Barres' Ovoid and Eckendorf; turnips, Bangholm and Superlative. The 

 results of three groups (I, II, III) of experiments are given. 



I. Comparison of Mangels and Turnips Having the Same Content of 

 Dry Matter. — In each experimental farm two groups of uniform cows 

 submitted to the same feeding during the prehminary period, were 



