The effect of the stage of development of the follicular wave (growth phase, static and regression of the dominant follicle) prior to the natural mounting on the ovulation rate, and the recovery rate and embryo quality in alpacas was evaluated. It was used 51 female alpacas with presence of dominant follicle greater than or equal to 7 mm, which were synchronized with a GnRH analogue. The groups were T1 (n=16): growth phase; T2 (n=19): Static phase and T3 (n=18): Regression phase. The day of the copula was considered as day 0. Ultrasonographic evaluations were conducted on day 2 (occurrence of ovulation) and on day 7 (to measure the size of the corpus luteum). The embryo recovering was done 7 days after the service. Two animals of T1 did not ovulate. There were no significant differences between groups by size of the dominant follicle at the time of service, ovulation rate or size of the ...

The effect of the stage of development of the follicular wave (growth phase, static and regression of the dominant follicle) prior to the natural mounting on the ovulation rate, and the recovery rate and embryo quality in alpacas was evaluated. It was used 51 female alpacas with presence of dominant follicle greater than or equal to 7 mm, which were synchronized with a GnRH analogue. The groups were T1 (n=16): growth phase; T2 (n=19): Static phase and T3 (n=18): Regression phase. The day of the copula was considered as day 0. Ultrasonographic evaluations were conducted on day 2 (occurrence of ovulation) and on day 7 (to measure the size of the corpus luteum). The embryo recovering was done 7 days after the service. Two animals of T1 did not ovulate. There were no significant differences between groups by size of the dominant follicle at the time of service, ovulation rate or size of the ...

Evalúa el efecto del estadio de desarrollo de la onda folicular: crecimiento, estático y regresión del folículo dominante previo al servicio sobre la tasa de ovulación, tasa de recuperación y la calidad embrionaria en alpacas luego del servicio por monta natural. El estudio fue realizado durante los meses de enero a abril del 2015, en el departamento de Puno. Se trabajó con alpacas hembras vacías (n = 53) seleccionadas de acuerdo a la presencia de un folículo dominante ≥ de 7 mm; las cuales fueron evaluadas con un ecógrafo Aloka SSD 500 y transductor lineal 7.5 MHz, para ser sincronizadas y distribuidas a uno de los siguientes tratamientos: T1 (n=16): Fase crecimiento; T2 (n=19): Fase estática y T3 (n=18): Fase regresión. Posteriormente las alpacas hembras fueron sometidas a empadre controlado por un periodo de tiempo mayor a 15 minutos, para asegurar la ovulación y poster...