Breeding potential of criollo lechero tropical bulls

Authors

  • Andrea Guadalupe Estrella-García Colegio de Postgraduados. Campus Veracruz. Predio Tepetates, Municipio Manlio Fabio Altamirano, Veracruz.
  • Silvia López-Ortíz Universidad Veracruzana, Facultad de Medicina Veterinaria y Zootecnia
  • Rodolfo Canseco-Sedano Universidad Veracruzana, Facultad de Medicina Veterinaria y Zootecnia
  • Ponciano Pérez-Hernández Colegio de Postgraduados/Campus Veracruz
  • Concepción del Carmen Ahuja-Aguirre Universidad Veracruzana, Facultad de Medicina Veterinaria y Zootecnia
  • Jonathan Guerrero-Hernández Colegio de Postgraduados. Campus Veracruz. Predio Tepetates, Municipio Manlio Fabio Altamirano, Veracruz.

DOI:

https://doi.org/10.19136/era.a8nII.2930

Abstract

Criollo Lechero Tropical livestock (CLT) have desirable characteristics for tropical livestock production. However, the reproductive performance of CLT bulls at different ages and in different seasons of the year has not been evaluated under tropical climate conditions. In this study, eight bulls were assigned to two age groups: 1) G1 (n=5): bulls at age 19.3 ± 0.4 months and 260 ± 9 kg of live weight, and 2) G2 (n=3): bulls at age 30.5 ± 3.1 months and 371 ± 29 kg of live weight. Throughout one year, libido was evaluated in a 0 to 10-scoring mehod and serum testosterone concentrations were determined. In the different seasons of the year, libido was scored 8 to 10 in both groups of bulls. Bulls from G2 had higher concentrations of testosterone (P<0.05) but concentrations were higher during the morning hours in both groups (P<0.05). In conclusion, CLT bulls from both groups showed a high reproductive potential during the different seasons of the year.

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Published

2021-12-02

How to Cite

Estrella-García, A. G., López-Ortíz, S., Canseco-Sedano, R., Pérez-Hernández, P., Ahuja-Aguirre, C. del C., & Guerrero-Hernández, J. (2021). Breeding potential of criollo lechero tropical bulls. Ecosistemas Y Recursos Agropecuarios, 8(II). https://doi.org/10.19136/era.a8nII.2930

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