For sperm morphology, 200 spermatozoa per replicate per animal were assessed to determine their normality. Smears were stained with Eosin Y (Leica Biosystems Richmond Inc., Buffalo Grove, IL, USA) and spermatozoa with the following morphologies were considered to be abnormal: (i) headless, (ii) hookless, (iii) double headed, (iv) broken tail, (v) coiled tail, and (vi) double tailed.27 (link)28