Gomti close to the Lucknow City. Live tubifex worms
(Tubifex tubifex) and zooplanktons (copepods) were
cultured in laboratory. Dry tubifex were bought from
the market (Red sea freeze dried tubifex, Insha,
Mumbai), which contained 52% proteins, 12% fat,
2% fiber and 5% moisture. The spirulina was procured
from the local market, which were floating type, and
consisted 32% crude protein, 4% crude fat, 5% crude
fiber, 10% crude ash 9% moisture and 31% nitrogen
free extract. Freeze dried daphnia (Taiwan make) were
collected from the local market which consisted 52%
crude fat, 12% crude protein, 2% crude fiber, 2%
moisture and 12% ash. Fish eggs were collected by
dissecting a fresh gravid catfish Mystus vittatus (order
Siluriformes, family Bagridae) daily which were
cultured in the uncontaminated pond. Eggs were
washed in tap water to remove blood vessels before
providing in the recirculatory tank. Each tank was
stocked with ten healthy and almost the same size of
C. chitala. Before releasing the fish, they were dipped
with 1 ppm of KMnO4 solution for few seconds. About
50% of the water volume was exchanged each time by
means of siphoning and refilled, so that the fish were
sampled for length and weight increments. Water
exchange was done in the morning at 10.00 h prior to
feeding. On every 7th day, 10 post-hatchlings were
sampled. They were placed in paper towel in order to
absorb water and weighed in electronic balance to the
Gomti close to the Lucknow City. Live tubifex worms
(Tubifex tubifex) and zooplanktons (copepods) were
cultured in laboratory. Dry tubifex were bought from
the market (Red sea freeze dried tubifex, Insha,
Mumbai), which contained 52% proteins, 12% fat,
2% fiber and 5% moisture. The spirulina was procured
from the local market, which were floating type, and
consisted 32% crude protein, 4% crude fat, 5% crude
fiber, 10% crude ash 9% moisture and 31% nitrogen
free extract. Freeze dried daphnia (Taiwan make) were
collected from the local market which consisted 52%
crude fat, 12% crude protein, 2% crude fiber, 2%
moisture and 12% ash. Fish eggs were collected by
dissecting a fresh gravid catfish Mystus vittatus (order
Siluriformes, family Bagridae) daily which were
cultured in the uncontaminated pond. Eggs were
washed in tap water to remove blood vessels before
providing in the recirculatory tank. Each tank was
stocked with ten healthy and almost the same size of
C. chitala. Before releasing the fish, they were dipped
with 1 ppm of KMnO4 solution for few seconds. About
50% of the water volume was exchanged each time by
means of siphoning and refilled, so that the fish were
sampled for length and weight increments. Water
exchange was done in the morning at 10.00 h prior to
feeding. On every 7th day, 10 post-hatchlings were
sampled. They were placed in paper towel in order to
absorb water and weighed in electronic balance to the
การแปล กรุณารอสักครู่..
