55-Title: Effects of exogenous melatonin administration on serum nitric oxide, antioxidant capacity and semen quality in dromedary camels (Camelus dromedarius)

55-Title: Effects of exogenous melatonin administration on serum nitric oxide, antioxidant capacity and semen quality in dromedary camels (Camelus dromedarius)

Authors: Sandeep Dholpuria, Sumant Vyas and GN Purohit

Source: Ruminant Science (2022)-11(2):519-524.

How to cite this manuscript: Dholpuria Sandeep, Vyas Sumant and Purohit GN (2022). Effects of exogenous melatonin administration on serum nitric oxide, antioxidant capacity and semen quality in dromedary camels (Camelus dromedarius). Ruminant Science 11(2):519-524.


Healthy male camels were randomly administered either melatonin (18 mg/28 kg) (MLT, n=6), subcutaneously (SC) on 1st September and animals that did not show behavioural signs till 6th October were again administered MLT (1 mg/kg SC). Untreated control (C) male camels (n=6) received plain corn oil. Semen was collected from camels that evidenced signs of rut. Blood was collected from all camels at weekly intervals for 20 successive weeks. The serum NO concentration decreased non-significantly before and during the breeding season. The serum antioxidant capacity (TAC) concentration fluctuated from 10.71±0.85 Units/mL to 19.12±1.00 Units/mL in both treated and control groups. The serum concentration of TAC was non-significantly higher in MLT-treated camels compared to the control before and during the breeding season. Significantly higher (P<0.05) semen volume, sperm concentration, motility and proportion of live sperms were observed in treated camels compared to the control. It was concluded that the exogenous melatonin causes non-significant alterations in serum NO and TAC in male dromedary camels yet improve semen parameters during the non-breeding and the subsequent breeding season.


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