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This work mainly aims to evaluate the effect of using two forms of onion (Allium cepa L.) (powder or juice) separately on semen quality, serum sex hormone and antioxidant profile of bucks. Thirty V-Line bucks (9 months old) were treated for 8 weeks and divided into five groups. Groups 1 ,2 and 3 were supplemented with 0, 400, 800 mg of onion powder/kg diet, respectively, while, groups 4 and 5 were given orally 1.5 and 3ml fresh onion juice /kg BW /day, respectively. Semen quality such as libido time, volume, sperm count, sperm motility, fructose and acrosome reaction with some blood sex hormones (FSH, LH, Testosterone) and serum antioxidant status (T. antioxidant capacity, malonaldehyde, superoxide dismutase) were evaluated. Onion powder or juice treatments at any dose displayed a significant shortened the time of libido with increased ejaculated volume, individual motility, sperm concentration, total sperm output, live sperm, total motility and acrosome reaction as compared to the untreated group. Serum sex hormones such as Luteinizing H (LH), Follicle Stimulating H (FSH) and testosterone were significantly (P<0.05) boosted compared to the control. Results revealed that serum antioxidant profile significantly improved by all onion treatments. In conclusion, using two forms of onion (powder or juice) separately for male rabbits can improve their reproductive and antioxidant status Key word: rabbit – onion – sex hormones – semen quality – antioxidant

SEMEN QUALITY, SEX HORMONE AND ANTIOXIDANT STATUS OF MALE RABBITS AS INFLUENCED BY TWO FORMS OF ONION