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Author: search.filters.author.Tsutsui, IsaoSubject: search.filters.subject.Penaeus monodon

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    Utilization of micro-snail Stenothyra species as a co-feed for giant tiger prawn
    (2026-06-01)
    Aue-umneoy, Dusit
    ;
    Pinphoo, Piyarat
    ;
    Thuamsuwan, Worachet
    ;
    Janeauksorn, Kittipong
    ;
    Meethong, Grissada
    Giant tiger prawn (Penaeus monodon) is one of the most commercially important species in global intensive shrimp aquaculture. However, rising fishmeal prices have driven increases in feed costs, prompting some farmers to use lower-quality feeds, which can negatively affect shrimp growth performance. Natural micro-snails, such as Stenothyra sp., have been identified as potential co-feeds for P. monodon. Therefore, this study aimed to investigate the effects of Stenothyra sp. as a co-feed on the growth performance and feed efficiency of P. monodon. Juvenile shrimp were assigned to two treatment groups (n = 20 per group): control (fed artificial pellets) and co-feed (fed artificial pellets supplemented with live micro-snails). The specific growth rate was higher in the co-feed group (8.4 ± 0.11% per day) than that in the control group (7.2 ± 0.34% per day). The final body weight was approximately 61% higher in the co-feed group than that in the control group. Similarly, feed efficiency (119.6 ± 2.73% vs. 77.5 ± 2.90%) and total protein intake (6.8 ± 0.17 g vs. 1.7 ± 0.06 g) were significantly higher in the co-feed group than those in the control group, indicating better feed and nutrient utilization following Stenothyra sp. supplementation. In conclusion, under the tested conditions, providing Stenothyra sp. as a co-feed improved growth performance and feed efficiency in juvenile P. monodon, possibly due to increased total protein intake. Overall, this study presents an innovative co-feeding strategy with potential benefits; however, its broader practical and economic implications require further evaluation.
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    Growth of giant tiger prawn, Penaeus monodon Fabricius, under co-culture with a discarded filamentous seaweed, Chaetomorpha ligustica (Kützing) Kützing, at an aquarium-scale
    (2010-06-01)
    Tsutsui, Isao
    ;
    Kanjanaworakul, Poonmanee
    ;
    Srisapoome, Prapansak
    ;
    Aue-umneoy, Dusit
    ;
    Hamano, Kaoru
    Growth of juvenile giant tiger prawn, Penaeus monodon Fabricius, was evaluated at an aquarium-scale in co-culture with a discarded filamentous seaweed, Chaetomorpha ligustica (Kützing) Kützing. Juveniles at different ages in days were examined, designated as J 16, J 44, J 58, J 93 and J 128, where a 1-day-old juvenile (J 1) is equivalent to a 20-day-old post-larva (PL 20)). Juveniles at every age group grazed directly on live C. ligustica, even those fed an artificial shrimp diet to satiation. Mean specific growth rate (SGR: % day<sup>-1</sup>) was higher in early age juveniles. Compared to mono-culture, significant differences in growth were observed at J 16 (4.44% day<sup>-1</sup>) and J 44 (1.60% day<sup>-1</sup>); however, no significant differences were recorded at J 58 (1.16% day<sup>-1</sup>), J 93 (0.75% day<sup>-1</sup>) or J 128 (0.45% day<sup>-1</sup>). It was concluded that co-culture of giant tiger prawn with C. ligustica has a dietary advantage, especially in early age juveniles. © 2009 Springer Science+Business Media B.V.