In the current study, for each boat, a team of observers accompanied
on two fry/fingerling delivery runs to grow out farms. During each of
the trips water quality parameters, temperature, pH, and dissolved
oxygen, ammonia and nitrite concentrations (in ppm) in the hold
containing the fish were measured at hourly intervals, at three points.
The measurements were done using, Sera Test Kits (Hersteller Sera
GmbH, D 5218 Heinsberg, Germany). Also, the number of mortalities
was estimated by direct observation (dead, free floating fish) at hourly
intervals.
On delivery of the fry/fingerlings to grow out operators daily mortalities
were estimated up to the seventh day. Also, the temperature, pH,
and dissolved oxygen, ammonia and nitrite concentrations at three
points (surface) of the ponds into which fry/fingerling were introduced
were also determined, at the time of transfer of the fish.