10 BULLETIN 1138, U. S. DEPARTMENT OF AGRICULTURE. 
Pens 9 and 10 were fed rations containing 15 and 25 per cent, 
respectively, of ox tongue. Approximately a dozen tongues were 
used in preparing this lot of dried tissue. The results are similiar 
to those obtained with pens 7 and 8. Pen 9 contained one of the 
very resistant types of birds, No. 79, which materially lengthened 
the survival period of the pen to 32 days, that of the three other 
birds in the pen being 24 days. If allowance is made for this bird, 
it appears that there was no material difference in the antineuritic 
values of the rations containing 15 and 25 per cent, respectively, 
of ox tongue. The details are shown in Table 3 and Figure 8. 
TABLE 3.—Ezxperimental feeding of dried ox tongue and polished rice. 
Pigeon | Survival Change in! 
Meat ration. No. | period. weight. Result. 
p 
PEN 9. Days. | Per cent. 
15 per cent ox tongue No. 611..-.---- 77 18 —3.3  Polyneuritis. 
Ose orc ee enee ew See ce eee 78 | 25 —21. Do. 
DG 5.2056 <2 eg. a Oe 76 30 —9.6 Do. 
UD OE ee ne ce ee eee 79 55 —34.2 Very thin, weak, end of test. 
AV OTAGE sca. = oo ee Sea eee 32 —17.2 
PEN 10. - 
25 per cent ox tongue No. 611....-.-- 73 21 +5.9  Polyneuritis. 
DQ Fee sere acc tes eee 74 21! +10.6 Do. 
WO URE Ss Be ese ce cet eeree 75 25 —5.7 Do. 
DOR Eas ee ese tose coe ee ee 72 49 —16.7 Do. 
ASVOTASC St aoe tok cb cee eee aoa ee eee 29 —1.5 
tN EZ) PEN /O 
YLT LA ROL IN PERT ef ERE ENGST 
OX TONGUE OX TONGUE 
FEO a= [aa (ae | (eam |e Fa Ta | mms 
Ze ee Oca Fc |e a Wt (SS ese 
fame (cree, (ORS | Her aah Valey hate! fecal! Fouad hy pce | 
280 = | SSS sae : 
360} a a 
j lise fe ot =F) 
340 + += : —— 
EPS SEN Ea Zs CI 
Soo WALT et NSN 
| 
Tes CEL tice Bike 
260 So 4 | | : 
240: 3 : — . — 
220} a hs Fs ps (el = el 
ee i>) See sia ieee 
200 Fey i 9 eae a Roel Res] | i— : Tsp 
Vi l | a | i | i ! i J 
©° E50 HORIZONTAL SPICE REPRESENTS 10 DAYS 
Fic. 8.—Dried ox tongue; changes in weights of pigeons fed. 
‘:Pens 11 to 14, inclusive, were fed muscle tissue derived from veal 
calves. The hind quarters from two carcasses of the best grade of 
medium-weight veal were used. The results from these tests are 
very similar to those obtained in feeding the same percentages of 
muscle from the mature ox. The average survival period of all the 
pigeons fed calf muscle was 27.9 days, while that of the birds receiv- 
ing muscle from the mature ox was 26.6 days. The slight difference 
is not material. The results are shown in Table 4 and Figures 9 
and 10. 
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