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Functional amino acids supplementation for shrimp increases water stress resistance under low oxygen and low salinity acute challenges
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B. Pratoomchat   , B. Kersanté * , R.T. Pereira , G. Le Reste |
| BCF Life Sciences, Boisel, 56140 Pleucadeuc, France |
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Abstract: (142 Views) |
| Two consecutive trials were conducted to evaluate the effects of functional amino acid mix obtained from poultry keratin in white shrimp (Litopenaeus vannamei) diets. Three diets were formulated, a control and two diets containing the supplementation of 0.50% (KFAA0.5%), and 1% (KFAA1%) of functional amino acids mix. For the low oxygen acute challenge, shrimp were suddenly transferred from 4.2 mg/L of dissolved oxygen into a 0.5 mg/L of dissolved oxygen (no aeration) 20 L tanks. For the low salinity acute challenge, shrimp were suddenly transferred from 15 ppt salinity into 0 ppt salinity 20 L tanks. Shrimp fed KFAA1% had significantly higher hemocyanin levels (+29.4%) and higher levels of plasmatic protein (+2.1%) through the 16 days of feeding. Differences in hemocyanin and plasma protein levels were detected mainly at 16 days of feeding. Shrimp under low oxygen acute challenge and fed KFAA1% resisted significantly longer to lose balance (+18.3%) and hemocyanin and plasma protein levels significantly decreased (-25.3% and -4.8%, respectively). Similarly, shrimp under low salinity acute challenge and fed KFAA1% resisted significantly longer to lose balance (+79.1%) and plasmatic protein significantly decreased during the stress (-4.2%). These results suggest the shrimp supplemented the functional amino acids mix had a more prepared physiological state which later, during the acute challenge, shrimp could benefit from to achieve higher water stress resistance. For challenge-oriented nutrition strategies, this study encourages discussion on understanding amino acids and their role in physiology above and beyond the traditional approaches as essential and dispensable. |
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| Keywords: Sustainability, Functional amino acids, Water stress resistance |
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Full-Text [PDF 902 kb]
(109 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2025/05/28 | Accepted: 2025/04/30 | Published: 2025/04/30
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