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Black soldier fly oil (BSFO), as well as coconut oil (CCO), naturally enriched in medium-chain fatty acids (MCFAs), are demonstrated to play roles in modulating energy metabolism and improving physiological health in cultured animals. This study was conducted to investigate the feasibility of BSFO and CCO application in diets for Pacific white shrimp (Litopenaeus vannamei), focusing on their protein-sparing and health-promoting effects. Six experimental diets were formulated: a higher-protein (42% protein, HP) diet, a lower-protein (40% protein, LP) diet, and four LP diets with fish oil partially replaced by 1% or 2% BSFO (LP-BSFO1, LP-BSFO2) or CCO (LP-CCO1, LP-CCO2). Following an 8-week feeding trial, shrimp fed the LP diet showed a significantly lower weight gain rate (298.27%) and a higher feed conversion ratio (2.03) than those fed the HP diet (336.54% and 1.66, respectively). However, the inclusion of BSFO or CCO in the LP diet notably compensated for the impaired growth performance, fully restoring it to a level comparable with the HP group. Similarly, compared to the LP group, BSFO or CCO inclusion effectively improved apparent digestibility for protein, lipid, phosphorus and calcium, modulated serum biochemical profiles (including parameters related to protein synthesis, glucolipid metabolism, and hepatic function), enhanced intestinal health (enhanced villus morphology and reduced Vibrio abundance) and hepatic energy metabolism (via regulation of key lipid and energy metabolism genes). Under hypoxic stress, shrimp in the BSFO and CCO groups exhibited higher survival rates (60.0–73.3%) than those in the HP group (53.3%). In conclusion, BSFO and CCO can be effectively incorporated into low-protein diets for L. vannamei to spare dietary protein and enhance health, by improving nutrient digestibility, optimizing energy metabolism, and reinforcing intestinal and hepatopancreatic function.
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Black soldier fly oil (BSFO), as well as coconut oil (CCO), naturally enriched in medium-chain fatty acids (MCFAs), are demonstrated to play roles in modulating energy metabolism and improving physiological health in cultured animals. This study was conducted to investigate the feasibility of BSFO and CCO application in diets for Pacific white shrimp (Litopenaeus vannamei), focusing on their protein-sparing and health-promoting effects. Six experimental diets were formulated: a higher-protein (42% protein, HP) diet, a lower-protein (40% protein, LP) diet, and four LP diets with fish oil partially replaced by 1% or 2% BSFO (LP-BSFO1, LP-BSFO2) or CCO (LP-CCO1, LP-CCO2). Following an 8-week feeding trial, shrimp fed the LP diet showed a significantly lower weight gain rate (298.27%) and a higher feed conversion ratio (2.03) than those fed the HP diet (336.54% and 1.66, respectively). However, the inclusion of BSFO or CCO in the LP diet notably compensated for the impaired growth performance, fully restoring it to a level comparable with the HP group. Similarly, compared to the LP group, BSFO or CCO inclusion effectively improved apparent digestibility for protein, lipid, phosphorus and calcium, modulated serum biochemical profiles (including parameters related to protein synthesis, glucolipid metabolism, and hepatic function), enhanced intestinal health (enhanced villus morphology and reduced Vibrio abundance) and hepatic energy metabolism (via regulation of key lipid and energy metabolism genes). Under hypoxic stress, shrimp in the BSFO and CCO groups exhibited higher survival rates (60.0–73.3%) than those in the HP group (53.3%). In conclusion, BSFO and CCO can be effectively incorporated into low-protein diets for L. vannamei to spare dietary protein and enhance health, by improving nutrient digestibility, optimizing energy metabolism, and reinforcing intestinal and hepatopancreatic function.
| Insgesamt | Letzte 365 Tage | In den letzten 30 Tagen | |
|---|---|---|---|
| Aufrufe von Kurzbeschreibungen | 154 | 154 | 22 |
| Gesamttextansichten | 9 | 9 | 0 |
| PDF-Downloads | 19 | 19 | 0 |