Simultaneous detection of androgen and estrogen abuse in breeding animals by gas chromatography–mass spectrometry/combustion/isotope ratio mass …

G Janssens, S Mangelinckx, D Courtheyn… - Journal of agricultural …, 2015 - ACS Publications
The administration of synthetic homologues of naturally occurring steroids can be
demonstrated by measuring 13C/12C isotopic ratios of their urinary metabolites. Gas …

Determination of selected testosterone esters in blood serum of slaughter animals by liquid chromatography with tandem mass spectrometry

I Matraszek-Zuchowska, B Wozniak, K Sielska… - Steroids, 2020 - Elsevier
Anabolic hormones, which cause muscle growth, have been banned for anabolic purposes
in animal husbandry in Europe since the 1980s. Control of hormones from the list of Annex I …

Toward a new European threshold to discriminate illegally administered from naturally occurring thiouracil in livestock

J Wauters, J Vanden Bussche, BL Bizec… - Journal of agricultural …, 2015 - ACS Publications
Thiouracil is a thyrostat inhibiting the thyroid function, resulting in fraudulent weight gain if
applied in the fattening of livestock. The latter abuse is strictly forbidden and monitored in the …

Determination of testosterone esters and nortestosterone esters in animal blood serum by LC-MS/MS

M Rejtharová, L Rejthar, K Čačková - Food Additives & …, 2018 - Taylor & Francis
ABSTRACT A sensitive and robust confirmatory method for determination of steroid esters in
blood serum is essential for reliable monitoring of possible illegal use of steroid hormones …

EURL Reflection paper 2.0: Natural growth promoting substances in biological samples: Presence-and formation-of hormones and other growth promoting substances …

AA Larrañaga, MJ Groot, MH Blokland, IM Barbu… - 2022 - library.wur.nl
From 29 November to 1 December 1995, Directorate-General VI, Agriculture, of the
European Commission organised the “Scientific conference on growth promotion in meat …

Determination of testosterone esters and estradiol esters in bovine and porcine blood serum

M Rejtharová, L Rejthar, K Čačková - Food Additives & …, 2017 - Taylor & Francis
Monitoring of steroid esters in blood serum is desirable in order to detect the possible illegal
use of natural hormones as growth promoters. A method for the determination of …

Discrimination between the exogenous and endogenous origin of thiouracil in farm animals, the final chapter?

MH Blokland, FE van Tricht, MJ Groot… - Food Additives & …, 2021 - Taylor & Francis
ABSTRACT Thiouracil (2-thiouracil) is a thyreostatic compound that can be used as an
illegal growth promoter. In bovine, porcine and other farm animals, low concentrations of …

Plasma metabolomic profiling based detection of drug specific responses to different bovine growth promoting regimes

RA Kinkead, CT Elliott, FT Cannizzo, B Biolatti, A Gadaj… - Food Control, 2018 - Elsevier
The use of anabolic substances for growth promoting purposes in food producing animals is
prohibited within the EU, yet ongoing applications of hormones such as oestradiol prove …

Determination of steroid esters in hair of slaughter animals by liquid chromatography with tandem mass spectrometry

I Matraszek-Żuchowska, B Woźniak… - Journal of Veterinary …, 2019 - sciendo.com
Introduction: The use of growth promoters in animal husbandry to increase weight gain and
efficiency of feed conversion into muscle has been banned in the European Union since …

Residue control in the European Union, the present and future challenges: Experiences from the Netherlands

SS Sterk - Procedia Food Science, 2015 - Elsevier
Residue control in the European Union has the primary goal to protect consumers from
intolerable health hazards which may be associated with residues of veterinary drugs or non …