FIELD APPLICATION OF ANABOLIC STEROIDS IN CARP SEED PRODUCTION II. REARING OF SPAWN TO FRY STAGE
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Authors
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BORA U.
Central Fisheries Extension Training Centre (CIFE)
Kahinada - 533 007 A.P.
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RAO P. S.
Central Fisheries Extension Training Centre (CIFE)
Kahinada - 533 007 A.P.
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VENKATESHVARAN K
Central Fisheries Extension Training Centre (CIFE)
Kahinada - 533 007 A.P.
Abstract
Two synthetic androgenic steroids, Ethylestrenol (17 ~ - Hydroxy - 17 a
ethyl- estr - 4 - en- 3 - one) and Stanozolal (17 ~ -Hydroxy- 17 a -methyl - 5 a -
androstano - (3, 2 - C) - pyrazole) were fed via diet at 3 ppm to the spawn of
Rohu and Mrigal which were reared upto fry stage over a period of 15 days in
earth ern carp nurseries. Both hormones enhanced growth of spawn. A maximum
of 25.78% increase in length and 25.69% increase in weight as compared to the
controls has been recorded. Growth rate was recorded to be 0.8 mm & 2.48 n1g/
day (control), and 1.13Inm & 2.67 mg/day (Stanozolol treated) in case ofMrigal
spawn; and 0.91 n1m & 2.39 mg/day (control), 1.12 mm & 2.90 mg/day (Ethylestrenol
treated), and 1.10 mm & 2.57 mg/day (Stanozolol treated) in case of Rohu
spawn. A decrease in the values of Relative Condition Factor upon hormone
administration was also noticed.
Keywords : anabolic steroids, carp nursery
