Detección Inmunohistoquímica del Receptor de Estrógeno en el Endometrio de Ovejas de Alta Prolificidad y de Prolificidad Estándar

a factor that affects the reproductive capacity of sheep is the presence of estrogen receptors in the genital tract, where they regulate the expression of numerous genes involved in morphological and functional development. possibly the reproductive performance of different breeds of sheep could be determined by the differential expression of these receptors. in the present study, we evaluated comparatively level of estrogen receptor expression in endometrial tissue ewe lambs high prolificacy (texel) and standard prolificacy (araucana) by immunohistochemical analysis. it is concluded that the level of estrogen receptor expression in stromal tissue, epithelial lining and endometrial glandular texel sheep is of greater intensity than in ewes araucana, this difference in the expression level of these receptors could be related to the increased prolificacy of texel breed.