156 <><(t Olid Tare Sila(/e 



Table X. Percentages of digest ihle nutrients in oat and 

 tare hay sample {calculated to dry mailer). 



Oudp protein* 9-48 



Ether extract 0-77 



Nitrogen-free extractives 32-66 



Crude libre ... ... 1700 



Production stareli equivalent (Kellner) per 100 lbs. dry oat and tare hay =43-24. 



* Ap))arent digestion coefficient used in calculation. 



Tnl)l(' XI. Nitrogen balance during period 

 and weights of sheep. 



Daily ration N consumed N voided Av. daily 



1000 gni. oat Av. per , * < N 



and tare hay day In faeces In urine Total balance 



gm. gm. gm. gm. gm. 



Sheep I 18-67 5-79 11-23 1702 +1-65 



Sheep II 18-67 6-09 12-18 18-27 -(-0-40 



Sheep I Sheep II 



St. lb. St. lb. 



Oct. 13, 1921 9 4 10 8 



Nov. 3, 1021 9 1 9 12 



Change in weight -3 - 10 



It is scarcely a matter for surprise tliat tlie slieep during this period 

 lost a little weight, since the ration was scarcely up to maintenance 

 requirements, owing to the necessity which arose of having tg cut down 

 the amount of hay to secure complete consumption. Both sheep, how- 

 ever, showed a sUght retention of protein during the trial. 



Oat and Tare Silage Period. 



Quality of silage used in experiment. The condition of the crop at the 

 time of cutting (June 23, 1921) has already been described. The material 

 was carted within three hours of cutting, so that Uttle or no wilting was 

 allowed to take place. The silage was made in a miniature wooden silo^, 

 which was 4 feet in diameter and 6 feet high and rested on a foundation 

 of gault clay. The forage was first cut by the usual chaif-cutter and then 

 filled into the small silo, precautions being taken that the material settled 

 down compactly. A thick layer of soil was placed on top. The silo was 

 opened on Nov. 8, 1921, and after rejecting the small amount of waste 



' A number of such experimental silos have been erected on the Howe Hill Farm in 

 connection with work being carried out by Mr A. Amos and the writer on the making of 

 silage mider controlled conditions, an account of which will be published shortly. 



