Effect of organic manure and inorganic fertilizer on the growth and proximate composition of common carp, Cyprinus carpio

The experiment was conducted to evaluate the effect of chicken manure and inorganic fertilizer (single super phosphate and urea) on growth performance viz. increase in wet body weight, length, specific growth rate (SGR), condition factor (CF), survival rate and proximate composition of Cyprinus carpio. Experimental water in tubs was treated in duplicates with low (PT,) @8000 kgha(-1), medium (PT,) @10,000 kgha(-1) and high (PT,) @12,000 kg/ha(-1) doses of chicken manure and also with low, medium and high dose of inorganic fertilizer(urea + SSP) @ 104 kgha(-1) + 155 kgha(-1) (IT), @218 kgha(-1) + 310 kg/ha(-1) (IT) and 322 kgha(-1) +470 kgha(-1) (IT,) respectively, along with control. At the end of the experiment, C. carpio showed maximum growth in PT, with significant higher SGR and CF. Survival rate ranged between 93.3 to 100 % in all the treatments. Level of crude protein and total fat were also highest in PT, Moisture and carbohydrate showed no significant changes while ash content changed significantly in all the treatments and control. These observations indicate that chicken manure alone was effective to stimulate productivity and growth of fish without affecting proximate composition of fish meat.