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Dietary Starch in Animal Feed Method Applicability Comparison to Method group 012 from User lab
AAFCO Check
Sample No.
Rob Mean
Value
Rob SD
R-Bar
#Labs
201430
30.06
30.04
2.13
.33269
36
201431
.41488
.55
.43966
.04918
21
201432
30.581
31.33
2.1870
.44907
36
201521
4.2488
3.89
.57905
.1469
27
201522
36.759
36.18
2.9984
.32589
27
201523
2.5539
1.81
1.6667
.10953
20
201524
18.906
18.185
1.6280
.25999
34
201525
18.441
17.585
1.6061
.30553
39
201526
6.1023
5.635
1.6242
.19636
34
201527
35.762
35.275
1.9284
.42745
32
201528
33.052
32.99
1.9750
.35037
32
201529
17.096
12.12
1.9859
.30663
33
201530
25.772
24.96
1.3459
.33156
31
201531
7.5558
7.145
1.4958
.21688
26
201591
8.3709
7.74
1.4240
.20552
23
201532
13.302
13.32
1.0062
.32238
30
201621
8.4036
8.135
2.2589
.19904
23
201622
19.985
19.1
2.0445
.29413
29
201623
32.036
30.2
2.0401
.43485
33
201624
15.22
14.675
1.5278
.30109
32
201625
33.688
32.300
2.0603
.32512
32
201626
7.8288
6.8850
1.5867
.20835
34
This data includes all methods that AAFCO includes under Method code 012. One important thing to
note is that Free Glucose is not included in the calculation for values supplied by my laboratory to
AAFCO and may be the reason for why our values are slightly lower than the Rob Mean. It is still
important to note that this method was within one standard deviation from the Rob mean on all of the
samples tested.