Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-13T06:37:53.901Z Has data issue: false hasContentIssue false
  • English
  • Français

A note on the nutritional evaluation of worm meal (Eisenia fetida) in diets for rainbow trout

Published online by Cambridge University Press:  02 September 2010

L. Velasquez ,
I. Ibañez ,
C. Herrera  and
M. Oyarzun
L. Velasquez
Affiliation:
Facultad de Quimica, P. Universidad Católica de Chile, Santiago, Chile
I. Ibañez
Affiliation:
Facultad de Quimica, P. Universidad Católica de Chile, Santiago, Chile
C. Herrera
Affiliation:
Facultad de Quimica, P. Universidad Católica de Chile, Santiago, Chile
M. Oyarzun
Affiliation:
Piscicultura Llao-Llao, Abtao, Chile
Get access

Abstract

Worm meal obtained from worms (Eisenia fetida) raised on waste materials was evaluated for Rainbow trout as a replacement for fish meal at dietary concentrations of 250, 500 and 1 000 g replaced per kg. During the study period none of the diets was detrimental to fish health. The dietary concentrations of 250 and 500 g/kg replacement gave higher growth rates than that of the control group (0 g/kg replacement), the former having consumed less food. The biological parameters of food conversion efficiency and protein efficiency ratio, for these replacement levels, also showed values better than the control diet. Liver somatic index and the chemical composition of fish fillets showed no significant differences between diets, except for a significant decrease in lipid content with increasing worm meal inclusion.

Keywords

nutritionrainbow trout
Type
Research Article
Information
Animal Production , Volume 53 , Issue 1 , August 1991 , pp. 119 - 122
Copyright
Copyright © British Society of Animal Science 1991

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Association of Official Analytical Chemists. 1980. Official methods of analysis. 13th ed. Association of Official Analytical Chemists, Washington DC.Google Scholar
Duncan, D. B. 1955. Multiple range and multiple F-tests. Biometrics 11:1–42.Google Scholar
Edwards, R. W. and Densen, J. W. 1980. Fish from sewage. Applied Biology 5: 211–270.Google Scholar
Hartenstein, R., Newhauser, E. F. and Kaplan, D. 1979. Reproductive potential of the earthworm Eisenia foetida. Oecologia 43: 329–340.Google Scholar
Hilton, J. 1983. Potential of freeze dried worm meal as a replacement for fish meal in trout diet formulations. Aquaculture 32: 277–283.Google Scholar
Rouelle, J., L'Huissier, M. and Pussard, M. 1987. [Consequences of a thiaminolytic activity associated with Eisenia foetida andrei on the compost microorganisms.] Revue d'Ecologie et de Biologie du Sol 24: 665–671.Google Scholar
Sabine, J. R. 1978. The nutritive value of earthworm meal. In Utilization of soil organisms in sludge management (ed. Hartenstein, R.), pp. 122–130. State University of New York, Syracuse.Google Scholar
Stafford, E. A. and Tacon, A. G. J. 1984. Nutritive value of the earthworm, Dendrodritus subrubkundus, grown on domestic sewage in trout diets. Agricultural Wastes 9: 249–266.CrossRefGoogle Scholar
Stafford, E A. and Tacon, A. G. J. 1985. The nutritional evaluation of dried earthworm meal (Eisenia foetida, Savigny, 1826) included at low levels in production diets for rainbow trout, Salmo gairdneri Richardson. Aquaculture and Fisheries Management 16:213–222.Google Scholar
Tacon, A. G. J., Stafford, E. A. and Edwards, C. A. 1983. A preliminary investigation of the nutritive value of three terrestrial lumbricid worms for rainbow trout. Aquaculture 35:187–199.Google Scholar
Velásquez, L., Herrera, C. and Ibañez, I. 1986. [Earthworm meal. Part 1: Obtention, chemical composition, nutritional value and bacteriological quality.] Alimentos 11: (1), 15–21.Google Scholar
Watanabe, H. J. and Tsukamoto, J. 1976. Seasonal change in size, class and stage structure of lumbricid Eisenia foetida population in a field compost and its practical application as the decomposer of organic waste matter. Revue d'Ecologie et de Biologie du Sol 13: 141–146.Google Scholar