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Turbidimetric assay for virginiamycin in feeds and premixes |
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| Authors: | D Mueller-Brennecke S J Reed J A Barkate |
| Abstract: | A turbidimetric assay method applicable to virginiamycin at level ranging from 5 g/ton in feeds to 50% in a premix is described. Incubation period is 4 h. Test organism is Streptococcus faecium ATCC 8043. On 6 levels of feed-grade material, the overall mean recovery was 6.75% Standard recovery studies resulted in RSD values ranging from 2.01 to 3.88% and a mean standard recovery of 100%. |
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