Neonatal administration effects of zeranol on calves'testes and body weight

  • Ricardo Enrique Toso UNLPam Facultad de Ciencias Veterinarias
  • Mirta Susana Toribio UNLPam
  • Leonardo Morini UNLPam. Facultad de Cs. Veterinarias
  • Hilton Magalhaes Profesor Titular aposentado de Terapeutica Veterinarias do Centro de Ciencias Rurais UFSM. BRASIL

Keywords:

Seranol, Promoters, Testes

Abstract

To determine if zeranol neonatal implants (NI) produce testes alterations the same way as the estrogenic hormones,20 male Abeerden Angus calves were used divided in two gruops of equal number. The implanted group (IG) received a 24 mg zeranol NI while the control group (CG) did not get any treatment. The animals were weighed at birth and at 8 months of age, when they were castrated. The body weight gain between the IG was compared and testicular development difference between both groups was estimated through testes weight. A decrease of testes development (p0.001) and an increase in body weight gain (p0.10) were found in the IG regarding the CG. It is concluded that zeranol NI upon the testes and body gain, produces a similar effect to that of the estrogenic gonad hormones

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Author Biography

Ricardo Enrique Toso, UNLPam Facultad de Ciencias Veterinarias

Formación en Farmacología. Dirige el Centro de Invest. y Desarrollo de Fármacos (CIDEF) de la FCV-UNLPam donde participa en el desarrollo de trab. de invest .Desarrollo protocolos de extracción de compuestos vegetales y ensayos para determinar su bioactividad utilizando mod. in vivo e in vitro

Published

2017-09-22

How to Cite

Toso, R. E., Toribio, M. S., Morini, L., & Magalhaes, H. (2017). Neonatal administration effects of zeranol on calves’testes and body weight. Ciencia Veterinaria, 1(1), 15–19. Retrieved from https://cerac.unlpam.edu.ar/index.php/veterinaria/article/view/2026

Issue

Section

Artículos de Investigación