Mar. i, 1921 Green Feed versus A ntiseptics for Growing Chicks 871 



abundance of fiber which is considered so beneficial in the digestive tract. 

 In view of this possibility, lots 4 and 5 were fed straw pulp. The only 

 difference in the treatment of these two lots was that No. 4 received but 

 one-half as much of the straw pulp as did No. 5. This pulp was prepared 

 by taking strawboard (made of straw) and reducing it to a pulp with 

 water. This pulp, after most of the water was expelled, was mixed with 

 the dry mash. This was bulky, especially the mixture fed lot 5. The 

 actual dry-weight consumption of paper was approximately 2}4 and 5 per 

 cent of the ration for lots 4 and 5, respectively. This pulp was palatable 

 when mixed in the feed, and the chicks would eat it fairly well. 



Lot 6 received the basal ration with hydrochloric acid added to the 

 drinking water at the rate of 1 part 36 per cent hydrochloric acid (HC1) 

 to 500 parts of drinking water. This is sometimes recommended as a 

 substitute for buttermilk for use as a preventive or corrective of black- 

 head in turkeys and of bacillary white diarrhea and coccidosis in chickens. 



Tobacco dust, a by-product of tobacco manufacturing and a valuable 

 remedy against intestinal parasites, was given to lot No. 7 at the rate of 

 2 parts added to the basal ration. In like maner lot No. 8 received 2 

 parts of sulphur, and No. 9 received 6 parts of lactose. Lot No. 10 re- 

 ceived the basal ration with copper sulphate added to the drinking water 

 at the rate of 1 part copper sulphate crystals (CuS0 4 ) to 1 ,400 parts 

 of water. 



The mortality records and weights for the different lots are given in 

 Table I. 



Table I. — Weight and mortality of chicks 



Lot 



No. 



Basal only 



Basal -(-straw 



Basal -j- straw and greens 



Basal-j-2^2 per cent straw pulp 



(No. 1) 



Basal +5 per cent straw pulp 



(No. 2) 



Basal+HCl 



Basal -j- tobacco 



Basal -(-sulphur 



Basal -(-lactose 



Basal +CuS0 4 



Basal -f greens a 



Basal+greens & 



Basal -j- no greens c 



Basal+greens d 



Age, 8 weeks. 



Weight. Mortality. 



2 57 

 252 



257 

 247 



252 



305 



223 



305 

 295 

 306 



243 

 186 



225 



20=< 



Age, 14 weeks. 



Weight. Mortality. 



Gm. 

 644 



475 

 524 



630 



638 

 639 



535 

 605 

 617 



653 



384 

 360 

 486 

 458 



a Experiment No. I (1918), White Leghorns, fed same ration as Lot No. 3. 

 b Experiment No. II (1919), White Plymouth Rocks, fed same ration as lot No. 3. 



c Experiment No. II (1919), White Plymouth Rocks, no greens; basal ration containing 10 parts of pro- 

 tein from meat scraps only, instead of meat scraps and soybean meal, 

 d Experiment No. II (1919), White Plymouth Rocks fed same as lot No. 13 with addition of greens. 



