Effect of implementation levels of biosecurity measures and genetic type on the epidemio-zootechnical characteristics of farmed Clarias gariepinus (Burchell, 1822)

https://doi.org/10.5281/zenodo.13886930

Authors

  • Georges Fonkwa Laboratory of Aquaculture and Demography of Aquatic Resources, Department of Aquaculture, Institute of Fisheries and Aquatic Sciences, University of Douala, P.O. Box 7236 Douala-Cameroon
  • Amidou Nsangou Kpoumie Laboratory of Aquaculture and Demography of Aquatic Resources, Department of Aquaculture, Institute of Fisheries and Aquatic Sciences, University of Douala, P.O. Box 7236 Douala-Cameroon
  • Judith Georgette Makombu Department of Fisheries and Aquatic Resources Management, Faculty of Agriculture and Veterinary Medicine, University of Buea, P.O. Box 63 Buea- Cameroon.
  • Rita Erika Tchounbou Laboratory of Aquaculture and Demography of Aquatic Resources, Department of Aquaculture, Institute of Fisheries and Aquatic Sciences, University of Douala, P.O. Box 7236 Douala-Cameroon
  • Franck Junior Djamou Kametieu Laboratory of Aquaculture and Demography of Aquatic Resources, Department of Aquaculture, Institute of Fisheries and Aquatic Sciences, University of Douala, P.O. Box 7236 Douala-Cameroon
  • Minette Eyango Tomedi Laboratory of Aquaculture and Demography of Aquatic Resources, Department of Aquaculture, Institute of Fisheries and Aquatic Sciences, University of Douala, P.O. Box 7236 Douala-Cameroon
  • Tchoumboue Applied Hydrobiology and Ichthyology Research Unit, Department of Animal Science, Faculty of Agronomy and Agricultural Science, University of Dschang, P.O. Box 222, Dschang-Cameroon.

Keywords:

Biosecurity, Diseases, Epidemiozootechnics, Clarias gariepinus, Hatchery

Abstract

Fish diseases and inbreeding are among the factors limiting fish production. The present study aimed to assess the effect of biosecurity measures implementation levels (BMIL) and genetic type on epidemiological and zootechnical characteristics in hatcheries, in order to contribute to healthy and sustainable fish farming.  Crosses (Beninese males x Cameroonian females and Cameroonian males x Cameroonian females) were carried out between two strains of domestic broodstock. The epidemiozootechnical characteristics evaluated (mortality rate, prevalence of pathologies, fertilization rate, hatching rate, productivity and economic profitability) were subjected to descriptive statistics, Student's t-test and two-factor analysis of variance. The resulting larvae were distributed in duplicate to three hatcheries, in which biosecurity measures were selectively applied to obtain the desired BMILs (low, medium and high) for each hatchery. As results, the highest mortality rate (100%) was recorded in the hatchery where the BMIL was low, then decreased significantly in crossbreds for both medium and high BMILs. Apart from fish deformities, the prevalence of other pathologies (anorexia and abnormal swimming) decreased significantly with BMIL. The prevalence of pathologies was about two times significantly higher for the pure strain than for the crossbreds. Fertilization and hatching rates dropped significantly with BMIL, with hybrid cross recording the highest values. Productivity and economic profitability increased significantly with BMIL. Values were 16 and 2 times higher in crossbreds than in the pure strain for medium and high BMIL respectively. Overall, the increase in BMIL and the use of genetic types have improved the epidemio-zootechnical characteristics of Clarias gariepinus in hatcheries. Fish farmers need to focus on biosecurity measures and use crossbreds from the Cameroon x Benin cross for optimum production.

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Published

2024-10-03

How to Cite

Fonkwa, G., Kpoumie , A. N., Makombu, J. G. ., Tchounbou, R. E., Kametieu , F. J. D. ., Tomedi, M. E., & Tchoumboue. (2024). Effect of implementation levels of biosecurity measures and genetic type on the epidemio-zootechnical characteristics of farmed Clarias gariepinus (Burchell, 1822): https://doi.org/10.5281/zenodo.13886930. Journal of Advanced Veterinary Research, 14(7), 1215-1219. Retrieved from https://advetresearch.com/index.php/AVR/article/view/2018

Issue

Vol. 14 No. 7 (2024): October

Section

Original Research

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Copyright (c) 2024 Journal of Advanced Veterinary Research

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