Investigating the safety of antibiotics added to collared peccary () semen extender through a multiparametric thermoresistance test.

The effects of antibiotics on sperm longevity in collared peccary () fresh diluted semen was evaluated. Semen samples from six adult males were collected by electroejaculation and diluted in Tris-citrate-fructose alone (control) and plus streptomycin-penicillin (2 mg/ml-2000 IU/ml) or gentamicin (70 µg/ml). Membrane integrity and functionality, mitochondrial activity and sperm morphology were assessed subjectively.