Fish oil associated to ascorbic acid in diluter for cryopreservation goat semen

ABSTRACT The study aimed to evaluate the effect of fish oil inclusion associated with ascorbic acid in the thinner for goat semen cryopreservation. Two male Boers underwent semen collection through the artificial vagina method, ejaculates being then assessed for physical and morphological aspects. After evaluation, a pool was formed, followed by the split into five groups: G1 - yolk-citrate extender and G2, G3, G4 and G5 - yolk-citrate extender plus 1.0; 2.0; 3.0 and 4.0% fish oil and 0.05% ascorbic acid, respectively. After thawing, physical evaluations of semen were assessed and additional testing slow heat resistance (TTR), hiposmotic (HO), acrosome integrity and compression of sperm chromatin. There was linear increase (P0.05). There was linear increase for intact acrosome and decreasing acrosome irregular (P0.05) were observed. The inclusion of 4% fish oil plus ascorbic acid in diluter improved motility and acrosome integrity after cryopreservation.