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- Title
OPTIMIZATION OF FEEDING DOSAGE OF HALWANA (ERYTHRINA VARIEGATA) LEAVES IN SUSTAINABLE GRASS CARP PRODUCTION.
- Authors
Swamy, A. V.; Murthy, H. Shivananda
- Abstract
Grass carp is one of the largest herbivorous freshwater fish native to eastern Asia, with a range that extends from northern Vietnam to the Amur river on the China-Siberian border. Aquatic plants are almost completely eaten by grass carp. In present study, different feeding doses (50 to 125%) of Halwana leaves were evaluated on grass carp and its effect on growth parameters were studied. The result revealed that, maximum average length of grass carp was recorded in T3-Halwana leaves 100% (35.16 cm) but all the feeding doses (50 to 125%) were statistically on par with each other. Maximum average weight was observed in T3-100% (192.50g). Feeding of Halwana leaves at 100% recorded maximum carp length and weight compared to other doses and control at 120th day of rearing. Feeding doses of Halwana leaves from 50% to 125% were does not affected the survivality of grass carp. The net carp production was significantly higher in T3-100% Halwana leaves (3395.16 g/18m2). But net production was decreased at T2-125% feeding dosage. T4-125% feeding dose showed the significantly higher (71.80 ± 0.58) Food Conversion Ratio. Significantly higher Protein Efficiency Ratio was recorded in T1-50% (0.202 ± 0.01) compared to the other doses of feed (75-125%). In case of specific growth rate, there was no significant difference noticed among feeding doses (50-125%). Maximum Hepato Somatic Index (HSI) was recorded in T1-50% Halwana (1.97) and T3-100% Halwana (1.97). The feeding dosages (50-125%) does not significantly affect the Viscero Somatic Index (VSI) of grass carp.
- Subjects
VIETNAM; CTENOPHARYNGODON idella; FRESHWATER fishes; NATIVE fishes; DRUG dosage; FOLIAR feeding; AQUATIC plants
- Publication
Journal of Experimental Zoology India, 2021, Vol 24, Issue 2, p1717
- ISSN
0972-0030
- Publication type
Article