206 



lu estimating the water-free substance consumed by each animal it 

 was assumed, during the first period, that the quantity eaten contained 

 the same percentage of water as that rejected by the animals and weighed 

 back. This was found to involve an error, as will be seen by reference 

 to Mr. Farrington's analyses beyond. In the second and third periods, 

 therefore, the dry matter actually consumed was calculated by deter- 

 mining the water-free substance in the feed given and in the rejected 

 portion, and subtracting the latter from the former. ''The percentage 

 of waste in feeding both corn fodder and silage is less than is indicated 

 by the percentage of fresh substance not eaten. " The results are tabu- 

 lated herewith. 



Dry matter actually eaten per pound of increase in live weight. 



Period T '^i davs ^^otT: Corn fodder 



i-enou i, .4 aays--^ Lot II: Silage 



Period II, 39 ^^^ -^^^^^"^ :":::-: -":. 

 Periods I and II, c3 days ■ { LIh: 8?^'.'!': i::::::;:::: 



Period m, 21 days. .JI;O^Ii^f{^;;-Jodd.r^;;:::;;":;;;;:;; 



C Lot I : Corn fodder 



Total for periods I, II, HI, 84 days. . < Lot II : Silage and corn 



( fodder 



Dry matter con- 

 sumed. 



Daily av- 

 erage per 

 animal. 



Founds. 

 11.28 

 12.87 

 13.4 

 13.9 

 12.6 

 13.5 

 13.2 

 13.2 

 12.8 



13.4 



Total for 

 period 

 per ani- 

 mal. 



Pounds. 

 210.7 

 308.9 

 522.2 

 540. 2 

 792.9 

 849.1 

 278.0 

 276.6 

 1, 070. 9 



1, 125. 7 



gain per 

 animal 

 for pe- 

 riod. 



Pound*. 



46.6 



64.9 



71.4 



62.8 



118.0 



127.7 



23.3 



10.0 



141.3 



137.7 



Dry mat- 

 ter con- 

 sumed 

 per pound 



of in- 

 crease in 



live 

 weight. 



Pound*. 

 5.82 

 4.76 

 7.31 

 8.60 

 6.72 

 6.65 

 11.93 

 27.60 

 7.58 



8.17 



During the first period, twenty-four days, the heifers fed silage ate 

 38.2 pounds more of dry matter per animal than the lot fed corn fod- 

 der ; but they gained 18.3 pounds more in live weight each than the 

 corn-fodder lot, making the amount of dry matter consumed per j)ound 

 of increase in live weight nearly 1 pound less in the case of the silage 

 lot. In the second period the advantage would seem to have been 

 slightly in favor of the lot fed corn fodder, for they ate 18 pounds less of 

 dry matter per animal, gained S.6 pounds more in live weight each, and 

 consumed 1.3 pounds less of dry matter fOr every pound of increase 

 made than the lot fed silage. Taking the two periods together, how- 

 ever, during the sixty-three days the silage-fed lot gained 9.C pounds 

 more in live weight, for which they ate 50 pounds more of dry matter 

 per animal than the corn-fodder lot f the amount of dry matter cou- 

 ^^umed per pound of increase in live weight averaged practically the 

 same for both lots. 



During the third period the heifers i)reviously fed corn fodder did 

 better than those which had previously been fed silage, and which now 

 received corn fodder. The latter fell off" in weight considerably, there 

 l)eing in the case of two animals a total loss in live weight for the whole 

 period. 



