Abstract
An experiment was conducted to find out growth rate of a commercial carp, Ctenopharyngodon idella (Valenciennes) at two concentration of ammonia; 0.027mg/l and 0.029 mg/l of un-ionized ammonia. The experiment was conducted in eight, 350 liter fiberglass tanks. The experiment continued for 84 days. The initial mean body weight of fingerling ranged from 71.2 to 74.16 g. The fish was fed daily with commercial formulated feed (22% protein, 8% fat and 1 % premix
vitamin). The water quality was monitored on weekly basis. The rate of
growth was monitored at the end of experiment by weighing individual
fish in each batch. The faster growth rate was viz. 15 mg/g/day in control
tank. The fish in tanks with 0.027 mg/l and 0.029 mg/l of un-ionized
ammonia showed growth at the rate of 12.5 mg/g/day and 11.2 mg/g/day respectively. This study revealed that ammonia has major effect on growth of pond fish, such as C. idella
NASREEN IJAZ, ZAFAR IQBAL, JAMIL ANWAR CHAUDHARY. (2010) EFFECTS OF AMMONIA ON GROWTH OF CTENOPHARYNGODON IDELLA (VALENCIENNES) FINGERLINGS , Punjab University Journal of Zoology, Volume 25, Issue (1&2).
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