ANIMAL PRODUCTION. 



761 



From records kept of two sows and litters during two years it was found that 

 it cost a total of ^lo.oO i)er sow and litter to feed the sow and 10 pigs during 

 the winter. 



The results of an experiment to determine the effect of feedins rice meal to 

 fattening hogs are given in the following table : 



Summary of experiments in feeding rioe meal to fattening hogs. 



Lots. 



Feed. 



Rice meal, skim milk, and mangel;? 



Wheal shorts, skim milk, and mangels 



Rico meal, wheat shorts, skim milk, and 



mangels 



Grain, wlieat shorts, skim milk, and mangels. 



Rice meal, ground alfalfa, and mangels. . . 



Wheat shorts, grain, ground alfalfa, and 



mangels 



Rice meal, dried blood, and mangels 



V\' neat shorts, grain, dried blood, and mangels. 

 Rice meal, ground alfalfa, dried blood, and 



mangels 



Wheat shorts, ground alfalfa, dried blood, and 



mangels 



W'heat shorts, boiled potatoes, skim milk, and 



mangels 



Rice meal, boiled potatoes, skim milk, and 



mangels 



Rice meal, skim milk, and mangels 



Grain, skim milk, and mangels 



Cost per 



pound of 



gain. 



CIS. 

 6.30 

 4.30 



4.70 

 4.66 



8. IS 



7.00 

 7.92 

 g!63 



7.76 



0. 12 



5.18 



6.75 

 5. 78 



Average weight per pig. 



-Vverage 

 daily 



gain per 

 pig- 



Lhs. 

 0.75 

 1.09 



.92 



1.05 



.59 



.91 

 .58 

 .91 



.68 



1.00 



1.03 



.58 



.75 



1.22 



Viscera. 



Liver. 



Lhs. 

 22.31 

 23. 44 



19.70 

 22. 55 

 20.01 



21.17 

 20. 75 

 22.03 



23.15 



25.55 



27.90 



18.05 



21.45 



Lhs. 

 2.54 

 3.41 



2.88 

 3.75 

 2.38 



2.54 

 2.10 

 2.05 



2.67 



3.22 



3.17 



2.30 



2.60 



Heart 



and 



lungs. 



Lhs. 

 2.09 



2.44 



2.11 

 2.50 

 2.00 



2.38 

 2.08 

 2.00 



L55 



2.37 



1.55 

 1.55 



"i.'ss 



Phosphorus metabolism, of lambs fed a ration of alfalfa hay, corn, and 

 linseed meal, E. L. Ross, M. H. Keith, and H. S. Geindley (t/. S. Dept. Agr., 

 Jour. Agr. Research, Jf (1915), No. 5, pp. //59-}73). — In connection Avith studies 

 conducted at the Illinois Experiment Station to determine the influence of 

 different quantities of protein upon the nutrition of young growing lambs, data 

 relating to the pho.sphorus metabolism of tlie lambs when weighing, on the 

 average, 115 lbs. were reported. Differences in the quantities of protein fed 

 were necessarily accompanied by corre.sponding differences in tlie quantities of 

 phosphorus ingested by the lambs. 



Two 9-month-old lambs were chosen from each of thi-ee lots which had been 

 fed rations consisting of alfalfa hay, shelled corn, and linseed meal. At the 

 time of this experiment the concentrates of the ration for the low-protein lot 

 consisted of 95 per cent of shelled corn and 5 per cent of linseed meal ; for the 

 medium-protein lot, 75 per cent of corn and 25 per cent of linseed meal ; and 

 for the high-protein lot, equal parts of corn and linseed meal. The lambs were 

 put in metabolism cages and analyses made of all tlie feed consumed and of 

 the excreta. 



In analy.ses of the feetls it was found that there were marked differences in 

 the percentages of the different forms of phosphorus occurring in alfalfa hay, 

 corn, and linseed meal, and in the ratio of phosphorus to protein in these feeds. 

 A large part of the phosphorus of alfalfa hay consisted of the acid-soluble in- 

 organic form ; that of corn was equally divided between acid-insoluble and acid- 

 soluble, the soluble being largely organic ; and that of linseed metd was largely 

 in the acid-insoluble form, the soluble being about equally divided between in- 

 organic and organic phosphorus. 



