Reproduction Abstracts

Introduction: Frozen and thawed ovine semen undergo morphological and functional changes that prevent or decrease the efficiency of fertilization. Sperm selection methods seek to improve the quality and viability of the fertilizing materials.Material and methods: Four sperm selection methods by centrifugation were employed, using two silica colloidal solutions coated with silane (Ovipure™– Nidacom, Gothenburg, Swedis) or by polyvinylpyrrolidone...