Progesterona post inseminación y eﬁciencia reproductiva en un establo lechero de Huaura, Perú

Beatriz Quiñonez Córdova; Jaime Fernando Vega-Vilca; Carlomagno Ronald  Velásquez Vergara

doi:10.51431/par.v7i1.1016

Authors

Beatriz Quiñonez Córdova Escuela Académico Profesional de Ingeniería Zootécnica, Universidad Nacional José Faustino Sánchez Carrión, Huacho-Perú https://orcid.org/0009-0004-9633-5071
Jaime Fernando Vega-Vilca Departamento Académico de Zootecnia, Universidad Nacional José Faustino Sánchez Carrión, Huacho-Perú https://orcid.org/0000-0003-3037-3142
Carlomagno Ronald Velásquez Vergara Departamento Académico de Zootecnia, Universidad Nacional José Faustino Sánchez Carrión, Huacho-Perú https://orcid.org/0000-0001-7707-4591

DOI:

https://doi.org/10.51431/par.v7i1.1016

Keywords:

cow, embryonic mortality, hormonal treatment, conception rate

Abstract

Objective: to evaluate the impact of the application of progesterone on day 16 post-insemination, on conception rate and days open. Methodology: 70 Holstein cows in their second calving were evaluated in two groups of 35 animals each. After the ﬁrst insemination, progesterone was applied to one group 16 days after insemination (T1), while the other group did not receive hormonal treatment and served as a control (T0). Data were analyzed by the Chi-square and t-Student test. Results: No signiﬁcant association (p>0.05) was found between pregnancy and progesterone application at 16 days post-insemination. In addition, no signiﬁcant diﬀerences (p>0.05) were observed in days open. Conclusion: The application of progesterone at day 16 post-insemination had no impact on reproductive eﬃciency in the dairy herd evaluated.