Slalion Tests with Feeds for Dairy Cows. 



431 



661. Fis5i scrap. — According to Kiihn, ' milk and butter of 

 normal quality were produced on a daily allowance of 2.3 pounds 

 of fat-free fisli scrap supplied with a variety of other feed, no 

 deleterious effects resulting. (340, 551, 779) 



662. Feeding fat to dairy cows. — At the Cornell Station, ^ Wing 

 conducted two trials in which tallow was fed to dairy cows in 

 addition to the usual feed. In each trial fire cows were used. In 

 the first the cows were on pasture, receiving in addition eight 

 pounds of grain. In the second they were on winter feed, receiving 

 a like allowance of grain. The milk yield and its composition were 

 ascertained for one week before the trial began. After this pre- 

 liminary period, beef tallow was added to the ration, commencing 

 with four ounces per day for each cow. Wlien this was readily 

 eaten, more tallow was added, until after the fourth week the 

 allowance for each cow reached two pounds daily. With this 

 amount added to the ration the trial continued six weeks longer, 

 or until the tenth week, at which time tallow was dropped from 

 the ration, the observations continuing two weeks longer. In the 

 table below appear the results found with two cows by weekjy 

 periods, these being representative of all the animals under trial: 



Adding tallow to the ration of dairy cows; data for two cows, repre- 

 sentative of ten — Cornell Station. 



1 Jahresber. f. Agr. Chemie, 1894, p. 482. 

 ' Bui. 92. 



