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Access type: UnknownAuthor: search.filters.author.Yuangsoi, Bundit

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    Effects of Substituting the Two-Spotted Cricket (Gryllus bimaculatus) Meal for Fish Meal on Growth Performances and Digestibility of Striped Snakehead (Channa striata) Juveniles
    (2023-02-01)
    Prachom, Noratat
    ;
    Yuangsoi, Bundit
    ;
    Pumnuan, Jarongsak
    ;
    Ashour, Mohamed
    ;
    Davies, Simon J.
    This study aimed to investigate the potential of using field two-spotted cricket Gryllus bimaculatus as the main protein source in fish feed for striped snakehead (Channa striata) juveniles. A 10-week feeding effect on growth performance, feed utilization, digestibility of major nutrients, including amino acids, and physiological outputs of nitrogen and phosphorus were determined. A total of 225 C. striata juvenile fish (Initial weight, 15.0 ± 0.1 g) were randomly distributed into three dietary groups in triplicate (25 fish per rectangular aquarium within a semi-recirculating system). Each group was hand-fed one of the experimental diets containing the graded level of a cricket meal (CM) replacing 0%, 50%, and 100% (CM<inf>0%</inf>, CM<inf>50%</inf>, and CM<inf>100%</inf>, respectively) of fish meal (FM) protein component. The results showed that growth performance and protein retention tended to increase with increasing dietary CM levels, whereas the waste outputs of nitrogen (N) and phosphorus (P) decreased. Apparent net protein utilization (ANPU) and P retention values increased with increasing levels of cricket meal inclusion level in the diet. There was a significant reduction in both N and P solid waste and dissolved waste output for snakehead with increased CM inclusion. There were significant effects of CM level on fish whole-body composition in terms of elevated protein and fat content. In conclusion, the CM is a viable alternative protein source for aquaculture feeds and can be included up to 100% as a replacement for FM without compromising the growth performance of striped snakehead Channa striata juveniles. This may also have a more favorable impact, with the potential to reduce N and P loading to the environment.
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    Replacement of Fish Meal Protein with Giant Worm (Zophobas morio) and Black Cricket (Gryllus bimaculatus) in Diet of Cobia (Rachycentron canadum)
    (2022-01-01)
    Chainark, Pitchaya
    ;
    Prachom, Noratat
    ;
    Boonyoung, Suttisak
    ;
    Yuangsoi, Bundit
    Replacement of fish meal with alternative protein ingredients is becoming increasingly important in aquaculture diets. In the present study, giant worm (Zophobas morio) and black cricket (Gryllus bimaculatus) were used to replace fish meal in diets of cobia (Rachycentron canadum). Cobia fingerlings, with average initial weight 80.84±0.65 g, were fed for eight weeks with three diets: basal diet (100% fish meal as the main protein ingredient), 30 % replacement of fish meal with giant worm meal, and 30 % replacement with black cricket meal. The results showed that the apparent digestibility coefficients of dry matter (63.2-69.1 %) and crude protein (83.9-88.1 %) of cobia were not significantly different (p>0.05) among the three diets. No significant difference in growth was observed among treatments (p>0.05); the average final weight of the experimental fish ranged between 113.11±3.67 and 120.01± 2.89 g, and average specific growth rate ranged between 0.53±0.06 and 0.61±0.04 %. Similar results were revealed for feed conversion ratio (1.16±0.07-1.21±0.05) and survival rate (100 %), wherein no significant (p>0.05) differences were observed among treatments. Therefore, the present results clearly demonstrate that giant worm meal and black cricket meal can be used to replace fish meal in cobia diets, at least at 30 % replacement.