1921.] 



509 



and it was thought undesirable to modify it. It will be noted 

 that it contains considerably more dry matter and a higher 

 starch equivalent than the silage ration, a difference accounted 

 for by the somewhat large quantity of oat straw chaff included. 

 Messrs. Pitcher were anxious to ascertain whether by using silage 

 they could dispense with the oat straw altogether. Had the 

 amount fed in the mangold ration been reduced to 8 or 10 lb. 

 both rations would have contained approximately the same 

 starch equivalent and digestible carbohydrates. 

 Times of Feeding, &c. — 



5.30 a.m. Dried grains fed. 

 7 a.m. Cows watered. 



7.30 a.m. Half silage (25 lb.} to silage-fed cows. 



Half mangolds and chaff to mangold-fed cows. 

 10 a.m. Concentrates giv^en. 

 2 p.m. Other half of silage or mangolds and chaff. 

 4.30 p.m. Watered. 

 5 p.m. Hay. 



The hay was weighed several times throughout the course of 

 the experiments, and averaged 10 lb. per head per day. 



Experimental Results. — The experiment commenced on 

 December 6th, and the arrangements for the two lots were as 

 follows : — 



6<A Dec. to 2jid Jan. (incl.) 3rd Jan. to 30th Jan. (incl.) 



Lot A. Mangold Ration. Lot A. Silage Ration. 



Lot B. Silage Ration. Lot B. Mangold Ration. 



Lot A thus received the mangold ration for 28 days and Lot B 

 the corresponding silage ration. On 3rd January the rations 

 v/ere changed over. Lot A receiving the silage ration for 28 days 

 and Lot B the mangold ration for the same period. The cows 

 were milked twice daily, and the milk from each cow was 

 weighed at every milking. The results are set out in Table 1. 



TABLE 1, 

 MANGOiiD Ration. 



Lot A. 6th Dec— 2nd Jan. (incl.) Lot B. 3rd— 30tirjan. (incl.) ~ 

 lb. of milk lb. of milk- 

 Name of Cow. durinq the period Name of Cow. durinq the period 

 (2S days). (2Hdays). 



Wringle 1,203 Duchess 2nd ... r)17 5 



Foley 819-0 Smutt 2nd ... 703-0 



Spot 552-5 Curly 1,417-5 



Frost 3rd ... 537-5 Ada 962-0 



Darlington ... 901-0 Daisy 375-0 



Beauty 5520 



Total .Milk ... 4,565-0 11). Total Milk ... 4,1<;5 

 Total Milk from Mangoldi^ 8,730-0 lb. 



