Pre-sincronización con Progesterona para la Inducción de Ciclicidad en Vacas Bos taurus indicus en Periodo de Anestro Posparto
Cargando...
Fecha
2021
Título de la revista
ISSN de la revista
Título del volumen
Editor
Unilasallista Corporación Universitaria, Editorial Lasallista
Resumen
The objective of this study was to evaluate the effect of pre-synchronization with progesterone (P4) for 3 and 6 days in Nelore cows in postpartum anestrus period, submitted to a fixed-time artificial insemination program (FTAI). Materials and methods: Seventy-four multiparous Nelore cows with a body condition of 2.5 were used. The cows were submitted to three experimental groups, control group and groups pre-synchronized with P4 for a period of 3 and 6 days. For the determination of postpartum anestrus status, ultrasound scans and blood samples were taken to verify the absence of endogenous P4. Forty-five days after AI, gestation was diagnosed. Data were obtained by descriptive analysis and in the case of presentation of significant differences the Chi-square test was used, considering a frequency of P < 0.05. Results: A higher gestation rate was observed for the group that was pre-synchronized for three days with P4 (40 %), in relation to the groups of six days of pre-synchronization and control (25 % and 32 %, respectively). Conclusion: It is possible to conclude that the pre-synchronization with P4 for three days improved the gestation rate of Nelore cows in the postpartum anestrus period.
Descripción
Palabras clave
Unilasallista Corporación Universitaria
Citación
Revista Lasallista de Investigación-Vol. 18 No. 2