ẢNH HƯỞNG CỦA THỨC ĂN, PHÂN CỠ VÀ GIÁ THỂ ĐẾN HIỆU QUẢ ƯƠNG GIỐNG CÁ LEO Wallago attu (Bloch & Schneider, 1801)

In order to elucidate the effects of feeding, segregation and refuges on growth freshwater catfish, Wallago attu, post-hatch larvae were fed with live zooplankton alone (moina) or combination between moina one following food: commercial pellets minced trash fish cow liver. For impacts W. these treatments applied seperately in refuges. The results indicated that final total length – (TLe: 54.0 ± 2.16 mm), specific rate (SGRL: 15.6 0.52%), body weight (BWe: 273.3 23.7 mg) (SGRW: 32.9 0.97%) liver treatment significantly higher than other (p<0.05). Size variation (CVL: 4.0 0.16% CVw: 8.7 0.81%) 4.6 0.22% CVW: 8.9 0.78%) less 9.0 0.8% 24.2 5.64%) 7.1 0.51% 12.0 1.5%). Segregation reduced cannibalism among comparition treatments. without non-segregation showed highest ratio (29.8%). There was no significant difference mortality ranged from 23.8% 27.3% (p>0.05).