McMahon T L, Casper H H
J Assoc Off Anal Chem. 1984 Sep-Oct;67(5):1026-8.
Four forage samples were analyzed by 16 laboratories for KNO3 content. Individual reported KNO3 values varied widely for each sample; coefficients of variation for the 4 samples were 36.0, 51.0, 12.8, and 55.0%. Recovery of KNO3 from the spiked sample averaged 105%. The analytical results, as a group, were unacceptable both statistically and for use in feeding recommendations. Three values reported could have resulted in feeding potentially toxic forage to livestock.
16个实验室对4个草料样本的硝酸钾含量进行了分析。每个样本报告的硝酸钾个体值差异很大；4个样本的变异系数分别为36.0%、51.0%、12.8%和55.0%。加标样本中硝酸钾的回收率平均为105%。总体而言，分析结果在统计学上不可接受，也不能用于饲养建议。报告的三个值可能会导致给牲畜投喂潜在有毒的草料。
