Control of the illegal administration of natural steroid hormones in urine and tissues of veal calves and in plasma of bulls

Scippo, Marie‐Louise; Gaspar, P.; Degand, Guy; Brose, François; Maghuin‐Rogister, Guy; Delahaut, Philippe; Willemart, Jean-Pierre

doi:10.1016/0003-2670(93)80276-q

Cited by 33 publications

(20 citation statements)

References 3 publications

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“…Plausible mean concentrations (Table IV) were extrapolated for the oestrogen concentrations by combining data from Tables II and III. At present, it is impossible to give a sound evaluation of the oestradiol treatment effect on oestradiol-17a concentration, because the three studies that focused on oestradiol-17a (or total oestrogens) yielded somewhat contradictory results. (Henricks et al, 1983a,b;Meyer et al, 1984Meyer et al, , 1985Scippo et al, 1993). The analytical difference might result from different coverage of oestradiol conjugates.…”

Section: Oestrogen Concentrations In Tissues Of Untreated and Oestradmentioning

confidence: 99%

Possible health impact of animal oestrogens in food

Daxenberger¹

2001

Human Reproduction Update

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Oestrogens govern reproductive functions in vertebrates, and are present in all animal tissues. The theoretical maximum daily intake (TMDI) of oestradiol-17beta by consumption of cattle meat is calculated to be 4.3 ng. Following the use of oestradiol-containing growth-promoting agents, TMDI is increased by a factor of 4.6 to 20 ng oestradiol-17beta, assuming that single dosage and 'good animal husbandry' are observed. Pork and poultry probably contain similar amounts of oestrogens as untreated cattle. The mean concentration of oestradiol-17beta in whole milk is estimated at 6.4 pg/ml. Scarce data available on eggs report up to 200 pg/g oestradiol-17beta. The risk evaluation of oestrogenic growth-promoting agents is limited by analytical uncertainties. Residues of oestradiol-17alpha and the importance of oestrogen conjugates are widely unknown. The performance of mass spectrometry still needs to be improved for confirmation of oestrogen concentrations in most food. At present, the potential relevance of oestradiol acyl esters, the actual daily production rate of oestradiol in prepubertal children, and the role of oestradiol metabolites in cancer are obscure. The presence of different cytoplasmic oestrogen receptor subtypes and potential oestradiol effects in non-reproductive functions require further examination.

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Section: Oestrogen Concentrations In Tissues Of Untreated and Oestradmentioning

confidence: 99%

Possible health impact of animal oestrogens in food

Daxenberger¹

2001

Human Reproduction Update

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“…This technique allowed the detection of steroid hormones at the action limit of 2 g kg −1 . Based on recent literature, there are a lot of publications on the application of immuno-assays for the detection of steroid hormones in urine [80][81][82][83][84] but routine application for steroid hormones in edible matrices of animal origin is, based on available literature, to date sparse. It also has to be stressed that binding assays represent potential screening methods but need to be confirmed by chromatographic separation methods such as f.i.…”

Section: Methods For Steroid Hormone Detectionmentioning

confidence: 99%

“…In the case of natural hormones, background concentrations of these compounds have to be taken into account [79]. As the list of steroid hormones in animal fattening is ever-changing and the analytical requirement, including validation procedures, are increasingly stringent, specific immunoassays [80,85], which allow the determination of a single compound or a small group of steroid hormones are now being replaced by multi-residue screening methods using chromatographic separation [52].…”

Section: Methods For Steroid Hormone Detectionmentioning

confidence: 99%

Novel analytical methods for the determination of steroid hormones in edible matrices

Noppe

Bizec

Verheyden

et al. 2008

Analytica Chimica Acta

162

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“…Their body concentration is influenced by sexual maturity of the animal, presence of hormone in the diet, and overall rearing conditions (Scippo et al, 1993;Schilt et al, 1996). The occurrence of estrus and thus the level of sex hormones can be influenced by dozens of plants found in animal feed, i.e.…”

Section: Introductionmentioning

confidence: 99%

Phenotypic connection of the main body parts of rabbits and layers

2011

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Nowadays in some west European countries increase the need of rabbit meat. The production of rabbit?s meat in these countries is based on some practical knowledge and methods of selection and breeding. The success in production of this kind of meat depends from the rabbit?s fat or from the quality of the body during the transport (confectioning meat). That is the reason why in these countries the selection of rabbits is making with a big attention. That is why is important to examine the phenotypic connection of the slaughter?s characteristics during the confirmation of the optimal selective criterion. The mass of the thighs and the mass of the muscle layer of the thighs are very important for the rabbit?s selection. The thigh?s mass has strong phenotypic correlation and full genetic correlation with the mass of the clean body. The purpose of this investigation is to find the range of connection of the thigh?s dissection based on correlative and regressive analysis in the prediction of the thigh?s meat contribution and also from the clean body. Based on the obtained results we can conclude that the mass of the thighs is a reliable indicator as to the yield of the thigh as for the whole body musculature.

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Control of the illegal administration of natural steroid hormones in urine and tissues of veal calves and in plasma of bulls

Cited by 33 publications

References 3 publications

Possible health impact of animal oestrogens in food

Possible health impact of animal oestrogens in food

Novel analytical methods for the determination of steroid hormones in edible matrices

Phenotypic connection of the main body parts of rabbits and layers

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