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. 2007 Mar 14;586(1-2):171-6.
doi: 10.1016/j.aca.2007.01.026. Epub 2007 Jan 19.

Excretion profile of boldenone in urine of veal calves fed two different milk replacers

R Draisci  1 , R Merlanti, G Ferretti, L Fantozzi, C Ferranti, F Capolongo, S Segato, C Montesissa
Affiliations

Excretion profile of boldenone in urine of veal calves fed two different milk replacers

R Draisci et al. Anal Chim Acta. .

Abstract

The residue profiles of 17alpha-/17beta-boldenone conjugated (17alpha/beta-Bol) and ADD were investigated by liquid chromatography-tandem mass spectrometry (LC-MS/MS) in urine of male veal calves fed two commercial milk replacers, with different content of cholesterol and phytosterols. The urine samples were collected within 4 h after feeding and further from all the animals. Detectable amounts of 17alpha-Bol conjugated were measured in urine collected from all calves, but the concentrations of 17alpha-Bol were higher in urine from calves receiving the milk replacer with the greater amount of phytosterols. During the whole experiment, 17beta-Bol and ADD were never detected in urine samples collected.

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