Abstract
The aim of the present study was to determine the protective effects of pomegranate juice in tris-based extender on semen parameters, computer-assisted sperm analysis (CASA) motion characteristics and field fertility of post-thawed Nili Ravi buffalo (Bubalus bubalis) bull spermatozoa. Two consecutive ejaculates/collection from each of the five adult Nili Ravi buffalo bulls were collected with artificial vagina at 42°C for a period of 7weeks, diluted in extender containing different concentrations of pomegranate juice (0.0%, 2.5%, 5%, 7.5% and 10%). Diluted samples were packed and frozen in 0.54ml French straws. The addition of 10% pomegranate juice in extender significantly improved post-thaw sperm morphology (%), motilities (CASA total motility, progressive motility (%) as well as VAP, VSL, VCL, STR, DAP, DSL) compared to the control group (p<0.05). Plasma membrane, acrosome membrane and DNA integrity were significantly higher in extender with 10% pomegranate juice than the control group (p<0.05). Field fertility rate (60.39% vs. 46.53%) was higher (p<0.05) in extender with 10% pomegranate juice as compared to the control. It is therefore concluded that the addition of 10% pomegranate juice in tris-based extender improves post-thaw semen parameters, CASA motion dynamics and field fertility in Nili Ravi buffaloes.
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