2021, Vol. 1, Issue 2, Part A
Digestibility of fermented and unfermented water hyacinth meal in the diets of juvenile Nile tilapia (Oreochromis niloticus)
Author(s): Yibrehu Emshaw, Abebe Getahun and Akewake Geremew
Abstract: The apparent digestibility coefficients of dry matter (ADCdrymatter), crude protein (ADCprotein) and gross energy (ADCenergy) of the unfermented water hyacinth leaf and whole plant and the Aspergillus niger fermented water hyacinth leaf and whole plant were determined for juveniles (15.8 ± 1.75 g) Nile tilapia. Each test ingredient was included at 20% level of inclusion with 80% reference diet containing chromium oxide as an indicator. Faces were collected twice a day by siphoning from each aquarium. The one way analysis of variances indicated that digestibility coefficients of fermented water hyacinth leaf and whole plant were significantly different from the unfermented counterparts. ADC protein ranged from 56.0 to 76.8% in the fermented water hyacinth and from 45.3 to 56.0% in the unfermented water hyacinth based diets irrespective of leaf and whole plant, indicating that fermentation process had increased the protein digestibility of both water hyacinth leaf and whole plant (P<0.05). Among the test diets, the fermented water hyacinth leaf showed the highest nutrient and energy digestibility. Fermentation by Aspergillus niger fungi is a highly recommendable treatment when water hyacinth should be include into diets for Nile tilapias.
Pages: 48-55 | Views: 784 | Downloads: 542
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How to cite this article:
Yibrehu Emshaw, Abebe Getahun, Akewake Geremew. Digestibility of fermented and unfermented water hyacinth meal in the diets of juvenile Nile tilapia (Oreochromis niloticus). Zool Entomol Lett 2021;1(2):48-55.