In:
Tạp chí Khoa học và công nghệ nông nghiệp Trường Đại học Nông Lâm Huế, University of Agriculture and Forestry, Hue University, Vol. 5, No. 2 ( 2021)
Abstract:
In order to elucidate the effects of feeding, segregation and refuges on the growth of freshwater catfish, Wallago attu, post-hatch larvae were fed with live zooplankton alone (moina) or combination between moina and one of the following food: commercial pellets or minced trash fish or cow liver. For impacts of segregation and refuges on the growth of W. attu, these treatments were applied seperately or in combination between segregation and refuges. The results indicated that final total length – (TLe: 54.0 ± 2.16 mm), specific growth rate of length – (SGRL: 15.6 ± 0.52%), final body weight – (BWe: 273.3 ± 23.7 mg) and specific growth rate of weight – (SGRW: 32.9 ± 0.97%) of fish fed with cow liver in treatment were significantly higher than that of other treatments (p 〈 0.05). Size variation of fish fed with cow liver (CVL: 4.0 ± 0.16% and CVw: 8.7 ± 0.81%) and minced trash fish (CVL: 4.6 ± 0.22% and CVW: 8.9 ± 0.78%) were less than moina treatment alone (CVL: 9.0 ± 0.8% and CVw: 24.2 ± 5.64%) and commercial pellets (CVL: 7.1 ± 0.51% and CVw: 12.0 ± 1.5%). Segregation and combination between segregation and refuges reduced the cannibalism among the larvae in comparition with the other treatments. The treatments without refuges and non-segregation showed the highest cannibalism ratio (29.8%). There was no significant difference in the mortality between treatments ranged from 23.8% to 27.3% (p 〉 0.05).
Type of Medium:
Online Resource
ISSN:
2588-1256
Uniform Title:
EFFECT OF DIFFERENT DIET MIXTURESS, SEGREGATION AND REFUGES ON LARVAL REARING OF Wallago attu (BLOCH & SCHNEIDER, 1801)
DOI:
10.46826/huaf-jasat.v5n2y2021
DOI:
10.46826/huaf-jasat.v5n2y2021.575
Language:
Unknown
Publisher:
University of Agriculture and Forestry, Hue University
Publication Date:
2021