Influence of Aeration Timings on Growth, Survival and Production of Labeo rohita (Hamilton) Fingerlings during High Density Seed Rearing
Influence of Aeration Timings on Growth, Survival and Production of Labeo rohita (Hamilton) Fingerlings during High Density Seed Rearing
Date
2014
Authors
Pawar, Nilesh
Jena, J.K
. Das, P.C
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India)Cochin
Abstract
A 60 day study was conducted to evaluate the
impact of different timings of aeration during night
hours between 18.00-24.00 h, 21.00-03.00 h and
24.00-06.00 h on growth, survival and production
performance of rohu (Labeo rohita) fingerlings
against a control with no aeration, in 50 m2 outdoor
concrete tanks (10 m×5 m×1.3 m). L. rohita fry were
stocked at a density of 0.5 million ha-1. Compared
to control, aeration caused significant increase in
survival, harvested size, specific growth rate and net
biomass production while the feed conversion ratio
significantly reduced. However, varied timing of the
night aeration could not yield any significant
difference in these yield attributes among the
aerated treatments. Further, comparison of night
aeration between 21.00-03.00 h and 24.00-06.00 h
revealed relatively better performances of the
fingerlings in the later treatment, indicating effectiveness
of aerating the tanks after midnight (24.00-
06.00 h).
Description
Keywords
Aeration, growth, survival, Labeo rohita, fingerlings
Citation
Fishery Tech 51(1):1-7