Comparative efficacy of fertilizers applications on the production of fry of Mystus gulio (Hamilton) in nursery ponds

[摘要] Efficacy of different fertilizers on the growth and survival of brackishwater catfish,Mystus gulio(Hamilton) fry in nursery ponds has been evaluated with three fertilizer treatments (T) viz., T1 - only organic (cattle dung @ 5 tons/ha), T2 - only inorganic (urea @ 50 kg/ha + TSP @ 60 kg/ha) and T3 - mixture of organic + inorganic (cattle dung @ 2.5 tons/ha + urea @ 25 kg/ha +TSP @ 30 kg/ha). After four weeks rearing, survival of fry was highest (69.35 ± 8.79%) in T1 which was significantly higher than those of T2 (46.01 ± 4.17%) and T3 (57.19 ± 6.22). But no significant difference in final length (2.70 - 2.79cm) and final weight (0.83 - 0.93 g) among three treatments was observed. Physicochemical variables of water and planktons of different treatments were recorded and discussed.Bangladesh J. Zool. 41(1): 21-27, 2013

[学科分类] 动物科学

[关键词] Mystus gulio;survival;growth;supplementary feed;fertilizers