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Metabolic and antioxidant enzyme activities in the hepatopancreas of Pacific white shrimp (Penaeus vannamei) in a limited water exchange aquaculture system: Influenced by adding different levels of wheat flour
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Mohammad Hossein Khanjani *   , Jamshid Eslami |
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Abstract: (486 Views) |
Introduction: The biofloc system affects the immune and antioxidant parameters of farmed shrimp. This study examined the activity of metabolic and antioxidant enzymes of the hepatopancreas of pacific white shrimp when wheat flour was added (compared to daily feed).
Materials & Methods: For this study, Pacific white shrimp with an average weight of
2.80±0.25 grams were used in five different experimental groups. A control group (without wheat flour addition) and four biofloc groups were included in the experiment, with wheat flour added to the rearing system at rates of 25, 50, 75 and 100% of daily feed. For the tests, 15 tanks with a volume of 150 l and a salinity of 32 g/l were used for 49 days. Each tank contained 54 shrimp (approximately 1 g/l).
Results: Biofloc system showed higher activity of metabolic and antioxidant enzymes in shrimp hepatopancreas than control group. Treatments WF50 (adding wheat flour to 50% of daily feed) and WF75 (adding wheat flour to 75% of daily feed) showed the highest levels of ALP enzyme activity, 61 and 60 u/mg protein, respectively, which were significantly different from other treatments (P<0.05). In WF50 and WF75 treatments, respectively, the highest SOD activity was 3.51 and 3.45 u/mg protein, and the highest CAT activity was 0.55 and 0.57 u/mg protein (P<0.05). The present study showed that biofloc increases the activity of metabolic and antioxidant enzymes in Pacific white shrimp.
Conclution: In the biofloc system, adding wheat flour to 50% to 75% of the daily feed increased enzyme activity (metabolic and antioxidant). In comparison to clear water, the biofloc system has key standards for use in the sustainable shrimp farming industry because of the improved activity of these enzymes. |
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| Keywords: Pacific white shrimp, Biofloc, Wheat flour, Metabolic enzymes, Antioxidant |
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Full-Text [PDF 711 kb]
(180 Downloads)
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Type of Study: Review |
Subject:
Special
Received: 2025/12/27 | Accepted: 2026/01/30 | Published: 2026/03/1
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