Sources of off-flavor in pangasius catfish (Pangasianodon hypophthalmus) ponds

Reza, Md. Shaheed

doi:10.15406/jamb.2021.10.00315

Cited by 2 publications

(1 citation statement)

References 27 publications

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“…The decomposition of these metabolic and feed-wastes makes the pond water nutrient rich that maximises the growth of phytoplankton which subsequently deteriorates the water quality through algal die-off and creates many unexpected problems, such as declined dissolved oxygen, reduced fish growth and off-flavour in fish muscle. Off-flavour lowers the consumer demand and market price of fishes (Schrader and Rimando 2003;Rahman et al 2021). In this situation, if algal bloom of culture ponds can be managed and utilised in a positive way converting algae into fishflesh then farmers might be benefited sustaining the fattening of carp practice.…”

Section: Introductionmentioning

confidence: 99%

Organoleptic qualities and proximate composition of fish grown in good aquaculture practice-based carp fattening pond

Hossain

Haque

et al. 2023

J Fish

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Organoleptic qualities and proximate composition of fish grown in carp fattening pond were studied under three treatments of feed and fertiliser management. Treatment T1 was designed with the use of organic fertiliser and stocking of silver carp, T2 with both organic and inorganic fertilisers and silver carp and T3 with both organic and inorganic fertilisers but excluding silver carp. One day in a week feeding restriction was followed in all the treatments. Fishes were stocked with a stocking density of 2470 fishes ha–1. Three fishes (Gibelion catla, Labeo rohita and Cirrhinus cirrhosus) were selected for organoleptic and proximate assessment. Cyanobacteria along with total phytoplankton cell density was significantly higher at treatment T2 followed by T3 and T1. However, in terms of productivity (Chl-a) treatment T2 was 27.1 and 13.3% higher compared to T1 and T3 respectively. Parameters assessed for proximate composition analysis did not vary across treatments and organoleptic test revealed comparatively higher acceptability of fishes collected from treatment T1 followed by T2 and T3 for all the fishes. Overall acceptability was higher for L. rohita from treatment T1. This study concluded that, inorganic fertilisation along with silver carp can improve the organoleptic properties of carps in pond.

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Section: Introductionmentioning

confidence: 99%

Organoleptic qualities and proximate composition of fish grown in good aquaculture practice-based carp fattening pond

Hossain

Haque

et al. 2023

J Fish

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Sources of off-flavor in high nutrient-load Nile tilapia (Oreochromis niloticus) ponds in north-central Bangladesh

Reza¹,

Razu²,

Haque³

et al. 2023

JAMB

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Recently, toxins and off-flavor compounds produced by phytoplankton in freshwater ponds have become a concern as it affects consumer acceptability and food safety. The purpose of this research was to investigate the relationship between phytoplankton abundance and water-sediment physicochemical parameters in high-nutrient-load Nile tilapia (Oreochromis niloticus) ponds from three sub-districts (upazila) in north-central Bangladesh. Water and sediment samples were collected from 9 randomly selected ponds of Sadar, Trishal, and Muktagachha upazila, and temperature, transparency, pH, phytoplankton concentration for water and pH, organic C and organic matter for sediment samples were determined. Water temperature and transparency were more or less similar across all the ponds, while pH varied significantly (p<0.05). Soil pH also varied significantly (p<0.05). The abundance of Bacillariophyceae, Chlorophyceae, and Euglenophyceae in pond water was almost equal but Cyanophyceae differed among the ponds with the highest in Muktagachha (5.22±2.30×104 cells/L) and the lowest in Trishal (4.84±0.740×104 cells/L). Correspondingly, Algal Genus Pollution Index (AGPI) was employed to study the water quality of Nile tilapia ponds, and it revealed that ponds in Muktagaccha had ‘probable high organic pollution’ compared to ponds in the other two locations. Five cyanobacteria genera were identified viz., Anabaena, Aphanizominon, Gomphosphaeria, Mycrocystis and Osoillatoria where Anabaena showed a strong positive correlation with water temperature and pH. The significantly higher abundance of cyanobacteria in Muktagachha is possibly linked to the favorable water temperature and pH and indicates a higher risk of off-flavor creation in the Nile tilapia ponds from this upazila. It is, therefore suggested that the right management measures must be put in place to control the cyanobacteria to ensure the profitability of fish farming.

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Sources of off-flavor in pangasius catfish (Pangasianodon hypophthalmus) ponds

Cited by 2 publications

References 27 publications

Organoleptic qualities and proximate composition of fish grown in good aquaculture practice-based carp fattening pond

Organoleptic qualities and proximate composition of fish grown in good aquaculture practice-based carp fattening pond

Sources of off-flavor in high nutrient-load Nile tilapia (Oreochromis niloticus) ponds in north-central Bangladesh

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