Effects of melatonin administration on seminal plasma metabolites and sperm fertilization competence during the non-reproductive season in ram. - Satta V; Manca ME; Torres-Rovira L; Succu S; Mereu P; Nehme M; Epifani G; Gallus M; Berlinguer F; Naitana S; Leoni GG (Theriogenology, 2018)