ANTMAL PRODT^CTION. 571 



(lie liii^li cost nf (lie l,iiik;i.i,'c lias made liH> siiiallcr ainounl of laiika,i,'(' iiioro 

 lirolitalilf. 



"A notulik' advaiila^ic in the I'oodin.i^ ut taiika^'i' is srcn in tlic ni()i'(> rajjid i^aiiis 

 iiiado by the hogs iuul the consequent shortening of tlie feeding period. 



•'Another argiunent for tankage is that it is a concentrated protein food. Only 

 t; small anunuit is rciiuircil (o produce the result desired. 



'■ In all the experiments made at this station, the hogs fed tankage c(msuined 

 niitre feed, made larger gains, and were not easily put off feed, while the hogs 

 fed straight shelled corn were easily thrown off feed after the first G weeks, 

 consumed less feed, and made slower gains. From the limited test made we ad- 

 vise adding tlie tankage to the soaked corn just before feeding, rather than 

 mi.xing with the coi-ii liefore soaking and allowing the tankage time to soak and 

 possilily lic(()iii»' rani-i(i liefore feeding." * 



In the test in which the effect of feed on the strength of bones in growing pigs 

 was studied the rations fed the 4 lots, each containing 9 pigs, for 12 weeks con- 

 sisted of soaked corn alone and with 10 per cent tankage, 10 per cent ground 

 bone, and 2.5 per cent shorts, respectively. For the succeeding 4 weeks 10 per 

 cent of the corn was re])laced by alfalfa hay in each ration and then, as the 

 alfalfa hay was not eaten readily, the unthrifty pigs (1 from each lot) were dis- 

 carded and the original ration was resumed for 5 weeks. At the beginning of 

 the test the weight of the pigs ranged from .57 to GO lbs. on an average. The 

 smallest gain, 114 lbs., was noted with the lot fed the corn ration and the great- 

 est gain, 1G4 lbs. per pig, with the lot fed ground bone. Three pigs in each lot 

 were slaughtered and the strength of the leg bones determined with a testing 

 machine. Considering the average for 2 bones in each leg, the bones were 

 markedly stronger in the case of the pigs ^ed the animal by-products, 1,081 lbs. 

 (the highest value) being required to cause breaking in the case of the ground- 

 bone fed lot as compared with 714 lbs. (the lowest value) in the case of the corn- 

 fed lot. Similar results were noted with the fore leg radius bone and the lower 

 hind leg til)ia. 



After continuing the feeding for 4 weeks 4 pigs in each lot were killed and the 

 I)reaking tests repeated. As before, the strongest bones were noted with the 

 lot which had received animal by-i)roducts, the average values (8 bones) ranging 

 from 4;'4 lbs. with the corn-fed lot to 1,0.57 lbs. with tlie lot fed tankage. 



"It is appiirent frcui these results that th(> fee<ling of tankage or ground 

 bone to young gi-owing pigs produces a very marked effect on the strengtli of 

 bone wlien com|iai-e(l with a corn ration and that its influence is still marked 

 when compared witli corn and shorts on alfalfa pasture." 



The test is regarded as ]>reliniinary and final conclusions are not dr:iwii. 



Analyses of commercial feeding stuffs, .T. F. IIai.i.iua.x {Loidsiaiia Htas. 

 Bui. SS. in). GJ). — In carrying out the ])rovisions of the State feeding-stuff law 

 1.815 sami)les were analyzed, including cotton-seed meal, rice bran, molasses 

 feeds, corn and oat feeds, wheat bran and mixed feed, brewers' grains, conniier- 

 cial and pro])rietary feeds, and beef scrajts and similar poultry feeds. Special 

 fiber determinations were also made in 12.''> sam])les of feeding stuffs. 



" (Jood whc-t bran is a scarce article in Louisiana. Some of tiiese brans are 

 adulterated with oat offal, and contain screenings. . . . 



" Many of the mixed feeds sold in this State are adulterated with ground 

 corncobs. These feeds came up to tlieir guarantee in nuist cases, but the 

 consumer in buying these feeds jiays fully as much as for the geiniine article. 

 .\ true nuxed feed, under this head, is composed of bran and middlings in vary- 

 ing pi-oportions. Tlie consumer should demand a mixed feed carrying at least 

 111. .5(1 ]ier cent jtroteiu. 



