Productive performance and economic analysis of intensive fattening of lambs treated with injectable zeranol and androgens under tropical conditions

Authors

  • Carlos Luna-Palomera Universidad Juárez Autónoma de Tabasco, Tabasco, México https://orcid.org/0000-0002-0465-8622
  • David Sánchez-Romero Universidad Juárez Autónoma de Tabasco, Tabasco, México
  • Ramsés Cervantes-Hernández Universidad Juárez Autónoma de Tabasco, Tabasco, México
  • Noel Mauricio Maldonado-García Universidad Juárez Autónoma de Tabasco, Tabasco, México
  • Juan Enrique Orlanzzini Rodríguez Productores y Comercializadores de Productos Agrícolas, Pecuarios y Acuícolas SPR de RL de CV, México
  • Leonel Cano-Ascencio Gobierno de México, Secretaria del Bienestar, México

DOI:

https://doi.org/10.15381/rivep.v34i2.23474

Keywords:

Anabolic steroids, androgens, profitability, hair lambs

Abstract

The aim of this study was to compare the productive performance and profitability of the fattening of Kathadin male and female lambs (n=97) in confinement treated with Zeranol (ZNL), androgens (AND) and ZNL+AND under a 2x4 factorial design. The lambs treated with ZNL received 0.2 mg/kg of body weight (BW) every 28 d, those treated with AND received Nandrolone Decanoate + Trenbolone + Boldenone Undecinelate, via IM in doses of 0.3 mg/kg + 0.4 mg/kg + 0.3 mg/kg of BW, respectively, every 28 d, those treated with ZL+AND received the same doses of the mentioned drugs, while those in the control group received 0.5 mL of saline solution. Final body weight (FBW), daily weight gain (DWG), feed conversion (FC) on dry basis (DM) and wet basis (WM), and voluntary intake (VC) in DM and WM were evaluated. The FBW was different (p<0.05) between treatments in males and females. The DWG was higher (p<0.05) for females treated with AND compared to those treated with ZNL and AND+ZNL, the latter being similar to those of the control group. Females treated with AND registered a lower (p<0.05) VC compared to those treated with ZNL and AND+ZNL. Net utility, benefit: cost ratio and profitability were better in animals treated with AND. The administration of AND represents a viable alternative to make more efficient the confinement fattening systems of lambs.

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Published

2023-04-28

Issue

Vol. 34 No. 2 (2023)

Section

Artículos Primarios

License

Copyright (c) 2023 Carlos Luna-Palomera, David Sánchez-Romero, Ramsés Cervantes-Hernández, Noel Mauricio Maldonado-García, Juan Enrique Orlanzzini Rodríguez, Leonel Cano-Ascencio

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

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How to Cite

Luna-Palomera, C., Sánchez-Romero, D., Cervantes-Hernández, R., Maldonado-García, N. M., Orlanzzini Rodríguez, J. E., & Cano-Ascencio, L. (2023). Productive performance and economic analysis of intensive fattening of lambs treated with injectable zeranol and androgens under tropical conditions. Revista De Investigaciones Veterinarias Del Perú, 34(2), e23474. https://doi.org/10.15381/rivep.v34i2.23474