DAIRY FAKMING DAIRYING AGROTECHNY. 469 



Tankage for hogs in cattle feed lots, B. E. Carmichael (Ohio Sta. ('ire. 

 ~l.i, in). .}).— Definite information gathered from 45 Ohio cattle feeders showed 

 tliat only 10 supplied other feeds than corn to pigs following steers. The re- 

 maining 35 feeders either supplied no feed in addition to wliat the pigs could 

 gather or else fed them corn. As the steers are very largely fattened on corn 

 it follows that the pigs are fattened almost exclusively on this grain. Tests 

 were therefore undertaken to determine whether the prevailing practice can 

 be improved. 



Two lots of 7 steers each were fed a ration of shelled corn, cotton-seed meal, 

 corn stover, corn silage, and mixed hay, while 2 similar lots were fed a dry 

 ration made up of the same materials, with the silage omitted. For 63 days 3 

 pigs followed each lot of cattle. They were then replaced by 4 thinner pigs 

 and the test continued for 56 days. In addition to what they could gather, 1 

 lot of pigs following the silage- fed steers and 1 lot following the steers receiving 

 no silage, were fed i lb. per head daily of digester tankage. 



Considering the test as a whole, the pigs fed the tankage gained 1,230 lbs. and 

 those fed no tankage SOS lbs., a gain of 52.22 per cent in favor of feeding 

 tankage. 



" The tankage was fed in the form of a thin slop, once daily. It may be 

 very conveniently fed in this manner and was greatly relished by the hogs, 

 in fact, they exhibited an almost ravenous appetite for it. . . . 



'• It is possible that the tankage-fed hogs consumed somewhat more corn than 

 did those which received no tankage. Definite data are not at hand in regard 

 to this matter, since in each of the lots a small amount of the grain was left 

 in the manure by the hogs. It seems certain, however, tbat the gains made by 

 the tankage-fed hogs are cheaper as well as larger. 



" While, on account of its cheapness as a carrier of protein and ash conven- 

 ience for feeding, digester tankage was used in the work reported herein, it is 

 l)elieved that other feeds, such as linseed-oil meal, soy beans, skim milk, butter- 

 milk, or middlings, would greatly increase the efficiency of the 'cattle hog' in 

 making economical gains. Feeders need, however, to exercise keen discrimina- 

 tion. in the purchase of feed stuffs, for there is a likelihood of a heavy demand 

 for certain feeds making it possible for the manufacturers to raise prices beyond 

 the amount justified by the feeding value. 



" Further work is needed along this line to determine what feeds are best 

 suited for this purpose, and in what amounts they should be fed." 



This line of experimenting will be continued at the station. 



Animal husbandry in Denmark, 1906, A. Appel (Tid-sskr. Landokonom., 

 1907, No. 6. pp. 329-3-^.'/). — A general survey. — f. w. woll. 



Cattle raising, Vicomte de Villebresme (Bui. Soc. Agr. France, n. set:, 39 

 (1907), May 1, Sup., pp. 377-388 ) .—The French cattle-raising industry is dis- 

 cussed with special reference to breeds, feeding, profits, and related questions. 



Sheep on arable farrt^, ,J. Wyllie (Trans. Highland and Agr. Snc. Scot., 5 

 ser., 19 (1907). pp. 1)7-161). — The data summarized have to do with the feed- 

 ing, care, and management of sheep under local conditions. 



Ostrich raising in Africa, D. Kurchoff (Tropenflanzer, 11 (1907). \o. 5. 

 pp. 302-SlJi). — A summary and discussion of data regarding ostrich raising in 

 Africa. 



DAIRY FARMING— DAIRYING— AGROTECHNY. 



Investigations on the proteid requirement of milch cows, O. Kellner 

 (Fiihling's Landiv. Ztg., .56 (1907), No. 17, pp. 5>i9-593 : Milcli Ztg.. 36 (1907), 

 No. JfO, pp. .'i69, ^70). — The author considers briefly some of the results obtained 

 in metabolism experiments with cows, the object of which was to determine the 



