Análisis de la eficiencia reproductiva de los hatos lecheros y novillas de vientre de la hacienda la estancia, Lenguazaque, Cundinamarca.

Abstract

In this work, the reproductive efficiency of belly heifers and the 3 dairy herds of the La Estancia farm are disclosed, taking the data from the daily log and the Dairy Plan C21 and Livestock Software of the hacienda, in the months of August, September, October and November. The following reproductive indices were obtained: an average of 14.07 months of age and 300 kg at the first service in heifers, for lactation cows an interval between deliveries of 416.06 was achieved, services by conception of 3.51 inseminations per pregnancy, a conception rate at first service of 29.6% and 29.2% for the months of August and September respectively, an average of 157 days open, with 73 days at first service, a jealous detection rate of 43 , 87% on average for 4 months and a pregnancy rate of 12.6% and 12.0% for the months of August and September respectively. The high precocity of the Jersey breed gave the opportunity to perform the first service at 14 months of age and at an optimal weight for conception without affecting the productive future of heifers. The rate of jealousy detection should be improved as the parameter that directly affects open days and the interval between deliveries.