Winter Growth of Carps under Different
Semi-Intensive Culture Conditions
Nadia Nazish* and Abdul Mateen
Department of Zoology and Fisheries, University of
Agriculture,
Faisalabad *Corresponding author:
nadianazish@ymail.com
Abstract
The experiment was planned to observe the
influence of different semi intensive culture conditions i.e. organic and
inorganic fertilizer with rice polish on the growth of carps during winter
season. Two earthen ponds were selected and each pond was stocked with Silver
carp (Hypophthalmichthys molitrix),
Rohu (Labeo rohita) and Mori (Cirrhinus
mrigala) at the ratio of 1:2:1 respectively with a total number of 44
fishes. Pond 1 was treated with poultry dropping and urea while pond 2 was
treated with poultry dropping, urea and rice polish. The ponds were treated with
at the rate of 0.2 g N/100gm of wet body weight of fish. Fertilizers were
added on weekly basis while rice polish was added daily. Total net fish
production of pond 1 and pond 2 was remained 797.3 and 1033.0 kg/ha/year. The
pond treated with fertilizer and artificial feed (rice polish) showed 3.6% more
fish production than the pond treated only with fertilizer.The physico-chemical parameters were measured on weekly basis.
Temperature, light penetration, pH and planktonic biomass showed non-significant
difference in both ponds. Pond 2 which was treated with poultry dropping, urea
and rice polish showed 1.26 times greater fish growth than pond 1 which was
treated with poultry dropping and urea.
Key words:
Chinese carp; Growth performance; Major carps; Organic fertilizer; Rice polish