Evaluación morfológica y de calidad seminal de ovinos machos mestizos de la raza pelibuey y blackbelly de la estación experimental Pastaza.

Abstract

In the PROPEA research project, the morphological characteristics and seminal quality of mestizo male sheep of the Pelibuey and Blackbelly breed were evaluated at Estación Experimental de Pastaza for the selection of stallions for reproductive purposes. The number of specimens to be used was two for each breed, that is, four in total, where their data was taken every 15 days with a total of three data collections, both for seminal quality and for morphological measurements. The statistical evaluation of seminal quality determined the most efficient results for each of the macroscopic and microscopic variables, where the Blackbelly breed II male presented better values, while for the Pelibuey breed statistically no significant differences were found (P ≤ 0.05), but numerically male I presented better values. As for the morphological characteristics for each breed presented values similar to their racial standard, unlike the chest width and head length whose measurements vary significantly this is due to the points of taking the measurements. It concludes with the selection of male II for the Blackbelly breed and male I for the Pelibuey breed, which will be used for reproductive purposes and genetic improvement in the area.