Growth performance in heavy lambs experimentally treated with 17 β-estradiol

Massimo Todaro, Roberto Puleio, Paolo Giambruno, Elena Bozzetta, Maria Rita Schiavo, Guido Ruggero Loria

Risultato della ricerca: Article

Abstract

European and Italian legislation have banned useof growth promoters in livestock since 1988, but epidemiologicaldata show that anabolic drugs are still being usedillegally. Recent surveys carried out on the cattle farms inNorthern Italy have confirmed the presence of growthpromotinghormones. Authors report data on growth performancesin 80 Valle del Belice×Comisana weaned lambsexperimentally treated with 17 beta-estradiol with 0.5 mlsolution of oil Depot Estradiol ® (containing 5 mg of 17β-estradiol valerate) by intramuscular injection into the thigh.The experiment was founded by the National Ministry ofHealth, to validate histological test for surveillance andcontrol of growth-promoting hormones in sheep. This studyconfirmed the strong correlation between clinical and anatomopathologicalfeatures and growth performances of treatedanimals. Otherwise, no significant differences were found on in vivo performance of the lambs. Estradiol treatmentshowed heavier shoulders and necks on treated lambs,while the loins were significantly lighter. Moreover, lambestradiol-treated groups showed lower separable and inseparablefat percentage than lamb-control groups.
Lingua originaleEnglish
pagine (da-a)1323-1328
Numero di pagine6
RivistaTropical Animal Health and Production
Volume44
Stato di pubblicazionePublished - 2012

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All Science Journal Classification (ASJC) codes

  • Food Animals
  • Animal Science and Zoology

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Todaro, M., Puleio, R., Giambruno, P., Bozzetta, E., Schiavo, M. R., & Loria, G. R. (2012). Growth performance in heavy lambs experimentally treated with 17 β-estradiol. Tropical Animal Health and Production, 44, 1323-1328.