570 EXPERIMENT STATION RECOED. 



a gain in live weiglit of 1 lb. On substituting for the niilli ration 1.1 lbs. of 

 rice gluten and 2J oz. of bone meal, wbich are estimated to be the equivalent 

 in nutrients of 1 gal. of separated milk, there was required to produce a gain 

 of 1 lb. live weight only 2.9 lbs. of cassava. While in former experiments 

 (E. S. R., 30, p. 174) the cassava bad been fed to the pigs in slices, cooked and 

 crushed, in these experiments it was fed raw, although chopped fine. 



How southern farmers may get a start in pig raising (U. S. Dept. Agi:, 

 Office ^cc. Hpcc. \('irc.\, 191 'i, Nov. .lo, pp. -'/). — Geiienil suggestions are given. 



Horse and mule raising in the South {U. »S\ Dept. Agr., Office Sec. Spec. 

 [Circ.], 191 Jf, Nov. 25, pp. Jf). — General suggestions are given. 



Poultry production, W. A. Lippincott (Philadelphia: Lea d Feblger, 191^, 

 pp. VII I -{-17-47 6, pi. 1, figs. 205). — This deals with the breeding, feeding, care, 

 and management of poultry, together with a chapter on preparing poultry 

 products for consumption. 



Suggestions on poultry raising for the southern farmer ( U. S. Dept. Agr., 

 Office Sec. Spec. [Circ], 191/,, Nov. 30, pp. 4)- 



Beport of the poultry husbandman, II. R. Lewis and A. L. Clabk (New 

 Jersey Stas. Rpt. 1913, pp. 211-228, 234-259, 271-276, 279-290, pis. 18).— A test 

 made in April to determine the efficiency of a 3,000-egg capacity incubator gave 

 a percentage of hatch of fertile eggs of 77.4, and a percentage in July of 85. 

 Comparing compartments run dry with those run wet it was observed that the 

 latter gave a much higher percentage of hatch as well as an increase in the 

 weight of the chicks, the average weight for the dry being 1.2 oz. and for the 

 wet 1.25 oz. 



Four brooders of 100 week-old chicks each were fed for nine weeks, two lots 

 receiving a regular chick ration and the two other lots receiving in addition 

 all the sour skim milk they would consume. The fii'st two brooders made a 

 total gain of 48.62 lbs. and 42.35 lbs., and the mortality was 71 and 73, re- 

 spectively, while the last two brooders made a total gain of 82.22 and 81.94 

 lbs., and the mortality was 28 and 28, resi>ectively. It was found to require 

 3.6 qt. of skim milk to produce a pound of body weight. It is stated that the 

 skim milk-fed chicks represented a more uniform flock than those not so fed. 

 It is thought that skim milk has the power to kill the organisms which cause 

 many poultry diseases, the bacilli being destroyed by the dilute acid of the 

 sour milk. 



A brief discussion of the ash and protein factor in poultry feeding, previously 

 reported from another source (E. S. R., 31, p. 568), is given. 



The gasoline colony brooder, outdoor lamp-heated brooder, adaptable hovers, 

 the underneath-pipe system, and the overhead-pipe system of brooders are de- 

 scribed. It is thought that for the general farm flock the colony brooders or 

 adjustable hovers are best, while for the egg farmer either of these two meth- 

 ods is suitable, or either of the pipe systems in a long house. 



In trials with three lots of Leghorn pullets, hatched February 26, April 8, 

 and June 10, respectively, the yearly egg production was 140, ISO. and 95 eggs, 

 the feed cost per bird $1.32, $1.64, and $1.25. and the profit per bird above feed 

 $1.98, $2.99, and $1.53, respectively. It was found that soy beans would pro- 

 duce a continuous supply of succulent green feed from August 15 until Novem- 

 ber, and that owing to their luxuriant growth they produced a liberal amount 

 of shade for the growing chickens. The soy-bean pods were not eaten by the 

 birds, thus probably making it possible to reseed by disking and rolling. The 

 value of mangels as a winter feed for poultry is discussed. The lower leaves 

 of the mangels were slipped three times during the summer and furnished a 

 large amount of green material. 



