Semen quality improved

摘要

Fresh and frozen sperm quality was enhanced in bulls fed an organic trace mineral supplement compared to bulls fed a more traditional inorganic mineral supplement.Mature Angus and Balancer bulls were fed zinc, copper, cobalt and manganese from inorganic and organic sources by University of Arkansas researchers. These minerals are most commonly fed to livestock as inorganic molecules of sulfates or carbonates. More recently, however, organic sources (complexes of a mineral and an amino acid or carbohydrate) are more often being utilized, due to improved bioavailability.