Chandrasiri, A.D.N.Ibrahim, T.A.Wahid, H.2014-11-122014-11-121995Tropical Agricultural Research, 7:p.186-192https://dl.nsf.gov.lk/handle/1/12075Veterinary ScienceRamAnimal breedingIn vitro fertilizationZona-free hamster oocyte sperm penetration assay (SPA)Hamster zone free oocyte sperm penetration test:a bioassay to test ovine sperm capacitationA