July is, 1918 Mineral Content of Southern Poultry Feeds 
131 
Table IX .—Mineral intake supplied by the feed , the outgo by way of the bowels, the 
amount of each element required to build up the tissue gain , based on the analyses of the 
bodies of i%-pound broilers , and the mineral balance —Continued 
Period and factor. 
Potas¬ 
sium. 
Sodium. 
Calcium. 
Magne- Sul- 
sium. phur. 
Chlorin. 
Phos¬ 
phorous. 
Iron. 
Sixth period: 
Intake. 
Gm. 
14.6050 
13.1084 
i-387s 
Gm. 
7.3420 
5-9358 
.9211 
Gm. 
34.1000 
31-8477 
6.0282 
Gm. 
4 - 7329 
5- 0382 
■2565 
Gm. 
5-3924 
3.0062 
1.7664 
Gm. 
4-8831 
3-4293 
.4605 
Gm. 
22.1251 
18.0121 
7.5090 
Gm. 
1.3106 
.044S 
.0326 
Outgo. 
Required. 
Balance. 
+ .1091 
+ • 4851 
- 3-7759 
— .5618 
+ .6198 
+ -9933 
— 3 - 396 o 
+1.2332 
Seventh period: 
Intake. 
i 4 -S 37 o 
13-3769 
1-0234 
7.8480 
4 - 4705 
.6794 
34-5710 
21.7299 
4.4462 
5-1029 
3 - 37 i 6 
. 1892 
5-2164 
3 - 346 o 
1.3029 
4.9866 
3.8460 
-3397 
20. 7737 
16.6019 
5 - 5384 
i- 5*77 
■0233 
.0240 
Outgo. 
Required. 
Balance. 
+ -1367 
+ 2.6981 
+ 8.3949 
+1.5421 
+ *5675 
+ .8009 
— 1.3666 
+ 1.4704 
Eighth period: 
Intake.. 
15.6800 
16.5110 
1.6921 
8.4780 
S' 9803 
1.1233 
25.2820 
33-2590 
7-3517 
2.8747 
5.9082 
.3128 
5 -8589 
4 -0527 
2 -1543 
5. 2620 
4 - 5030 
• 5616 
23 - 34 H 
19.2760 
9 -I 576 
o- 2393 
*0395 
.0398 
Outgo. 
Required... 
Balance. 
- 2.5231 
+ 1-3744 
— 15.3287 
— 3 - 4263 
— -3481 
+ -1974 
“ S-I 576 
+ .1600 
Total balance. 
+ 2-8356 
+ 14.6011 
+20. 5406 
-2.5371 
+2.2231 
+2.6542 
—12.0312 
+ 7- 5870 
Table VIII .—Total weight of mineral in the droppings for each period 
Period. 
Potas¬ 
sium. 
So¬ 
dium. 
Calcium. 
Magne¬ 
sium. 
Iron. 
Phos¬ 
phorus. 
Sul¬ 
phur. 
Chlo¬ 
rin. 
Total 
drop¬ 
pings. 
Gm. 
Gm, 
Gm. 
Gm, 
Gm. 
Gm. 
Gm. 
Gm. 
Gm. 
First..... 
1.9847 
1.0445 
16.7695 
2.3497 
o. 0020 
3 - 8349 
0.6728 
0.7905 
168.2 
Second. 
5.7272 
2. 2206 
* 5-9993 
5-1619 
.0203 
8.3507 
2.3389 
2.0876 
369-5 
Third. 
6.4260 
3 - 0704 
17.0000 
2.4208 
.0340 
9.1120 
1.3804 
3.1790 
340 
Fourth. 
7 - 7363 
4.5841 
30-4734 
2.6014 
.0314 
16.9410 
1.8724 
2.8585 
524-5 
Fifth. 
9 -5486 
3-7437 
32-1895 
3- 6274 
.0324 
14.9857 
2.6184 
3 - 4894 
54 i 
Sixth. 
13.1084 
5 - 9358 
31-8477 
5.0382 
.0448 
l8.0X21 
3.0062 
3-4293 
641 
Seventh. 
13-3769 
4 - 4705 
21. 7299 
3 - 37 i 6 
.0233 
16.6019 
3 - 3460 
3.8460 
641 
Eighth.. 
16.5110 
5-9803 
33-2590 
5.9882 
•0395 
19 -2760 
4.0527 
4 - 5030 
790 
DISCUSSION OF RESULTS 
In studying the mineral content of poultry feeds we found that the 
different samples of products grown in different sections of the country, 
or even different sections of a State, or on different plots of ground, vary 
in their inorganic content. Therefore we have given the averages of a 
large number of analysis from different lots of the same kind of feeds in 
order to show the average of these specific analyses (Table II) arid later 
a tabulation of the analyses of just the feeds used in these experiments 
(Table III). The latter table will enable us to determine definitely just 
the amount of mineral taken in in these feeding experiments. Not only 
the poverty of the soil, but also seasonal variations from year to year y 
such as drouth, may affect the mineral content of the feed. 
In the baby chick the bones are very thin walled and bend easily, 
indicating that thorough calcification has not taken place in all parts. 
It is to be expected that later in the life of the chick there would be a 
greater amount of mineral in the bones and consequently a greater per- 
* centage in the total weight of the bird. If the results of the analyses 
