Efecto de la buserelina y dispositivo intravaginal para tratar anestros en vacas multíparas.

Abstract

Rocon Farm seeks to improve the reproductive performance of the herd to prevent or treat postpartum anestrus because it alone is the promoter of significant economic losses testing different pharmacological brands when applied through the ovsynch process at the present time of the year for the induction and synchronization of heat. Aiming to evaluate the effect of buserelin and intravaginal device to treat anestrus in multiparous cows, avoiding that this entails increasing the interval between births, decreasing the greater number of open days. The implemented methodology had an experimental quantitative approach, using a statistical analysis of a Student T-test for means of two paired samples and a descriptive statistical analysis. For the development of the present investigation was used 20% of the total of the multiparous cows existing in the farm, were 80 cows, resulting in 8 cows per treatment, the treatments with ovsynch protocol that were experienced were two: Treatment 1 (T1)= (Buserelin acetate 0,0042 mg/ml (GnRH) + intravaginal device (plusellar 0,6) + prostaglandin (PGF2α) + fixed-time artificial insemination (FTAI) at 16 hours) and Treatment 2 (T2)= (Buserelin acetate 0.0042 mg/ml (GnRH) + intravaginal device (plusellar 0,6) + prostaglandin (PGF2α) + fixed-time artificial insemination (FTAI) at 24 hours). Through this methodology it was obtained as results that there are no significant differences in the 2 treatments represented with 81,25% average, which corresponds to 13 cows that passed the anestrus. In this context, it is concluded that cows inseminated at 16 hours after the second application of buserelin showed a higher conception rate compared to cows inseminated at 24 hours after the second application of buserelin.