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- Title
STUDIES ON GROWTH RESPONSE OF GRASS CARP (CTENOPHARYNGODON IDELLA) TO DIFFERENT TERRESTRIAL PLANT LEAVES FEEDS AND THEIR IMPACT ON WATER QUALITIES IN REARING PONDS.
- Authors
Swamy, A. V.; Murthy, H. Shivananda
- Abstract
The effect of different terrestrial plant leaves feed on water quality (Temperature, pH, dissolved oxygen, free CO2 & alkalinity), growth parameters (Fish length, weight, survival, net production and specific growth rate), feed efficiency parameters (Food conversion ratio & protein efficiency ratio) and body indices (Hepato somatic index & viscero somatic index) were studied. Three different plants leaves viz., Colacasia (Colacasia esculanta), Halwana (Erythrina variegata) and Duranta (Duranta repens) were analyzed for proximate composition. Higher carbohydrates content was observed in Halwana leaves (37.64 %) followed by Duranta leaves. All of the water quality parameters measured during the experimental period was not significantly different among treatments. Different plant leaves (Colacasia, Duranta & Halwana) were evaluated as feed in grass carp production and their effect on length as well as weight of grass carp was analysed. Maximum average length of grass carp was recorded in Halwana leaves (22.38 cm) and maximum average weight was observed in Halwana (153.03 g). Maximum survival of grass carp was recorded in the Colacasia (98.14%), but there was no significant difference noticed among treatments. The net production was significantly higher in Halwana (3519.69 g/18M2). Maximum Protein Efficiency Ratio (PER) was not differed significantly among different feed leaves. Maximum Specific Growth Rate (SGR) was recorded in Halwana leaves feed. Colacasia and Halwana leaves feed recorded higher Viscero Somatic Index (VSI) and Hepato Somatic Index (HSI). Hence, Halwana leaves can be used as feed for grass carp in sustainable fish production.
- Subjects
CTENOPHARYNGODON idella; FOLIAR feeding; WATER quality; FOLIAGE plants; PONDS
- Publication
Journal of Experimental Zoology India, 2021, Vol 24, Issue 2, p1689
- ISSN
0972-0030
- Publication type
Article