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<p>A ninety (90) day experimental trial was conducted to evaluate the effect of acid-fermented chicken intestinal waste silage (CIWS) in the diet of rainbow trout fingerlings (<i>Oncorhynchus mykiss</i>) by the partial replacement of fishmeal. After an acclimatization period of seven (7) days, a total of one hundred and sixty fingerlings (160) were distributed to sixteen (16) fiber tanks of 100&#xa0;L capacity by following a completely randomized design. Four iso-nitrogenous (42% crude protein) diet plans were prepared to replace 0%, 10%, 20%, and 30% of fishmeal with acid-fermented chicken intestinal waste silage, and in accordance with four treatments, each with four replicates, were designed as Control T<sub>0</sub>, T<sub>1</sub>, T<sub>2</sub>, and T<sub>3</sub> diets, respectively. Fish were fed twice a day at a rate of 5% of their body weight. The growth performance and haemato-biochemical parameters were significantly affected by dietary treatments (<i>p</i> &lt; 0.05). T<sub>2</sub> yielded the best growth performance, with the highest final weight (797.68 ± 5.19&#xa0;g), body weight gain (576.25 ± 5.03&#xa0;g), SGR (1.15 ± 0.01), and weight gain percentage (260.25 ± 2.2%) in comparison to other treatments (<i>p</i> &lt; 0.05). Haematological parameters, including haemoglobin (9.18 ± 0.45&#xa0;g/dL), RBC (1.45 ± 0.06 × 10⁶/mm³), and haematocrit (37.32 ± 0.18%), were also highest in T<sub>2</sub>, while ALT and AST were lowest, indicating improved hepatic health. T<sub>3</sub> showed a decline in growth and haemato-biochemical indices, with elevated cholesterol (42.19 ± 3.17&#xa0;mg/dL) and triglycerides (39.15 ± 2.68&#xa0;mg/dL). The lowest FCR was recorded for T<sub>2</sub> (1.73 ± 0.01) depicting improved feed utilisation. Haematological parameters such as haemoglobin (9.18&#xa0;g/dL) and RBC (1.45 × 10⁶/mm³) improved progressively up to 20% inclusion, while T<sub>3</sub> showed a decline. Survival was recorded @100% across all treatments. Therefore, the current study demonstrated that acid-fermented CIWS can effectively replace fishmeal up to 20% in rainbow trout diets without adverse effects on growth and health indices.</p>

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Partial replacement of fishmeal with acid-fermented chicken intestinal waste silage in the diet of rainbow trout, Oncorhynchus mykiss fingerlings to ascertain growth, survival and haemato-biochemical parameters

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  • 发表日期：

    2026年5月7日

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  • Ubaid Shakeel Wani,
  • Faisal Rashid,
  • Oyas Ahmad Asimi,
  • Mansoor Ahmad Rather,
  • Gowhar Iqbal,
  • Khandakar Zakir Hossain,
  • Girija Behere,
  • Kawkabul Saba

摘要

A ninety (90) day experimental trial was conducted to evaluate the effect of acid-fermented chicken intestinal waste silage (CIWS) in the diet of rainbow trout fingerlings (Oncorhynchus mykiss) by the partial replacement of fishmeal. After an acclimatization period of seven (7) days, a total of one hundred and sixty fingerlings (160) were distributed to sixteen (16) fiber tanks of 100 L capacity by following a completely randomized design. Four iso-nitrogenous (42% crude protein) diet plans were prepared to replace 0%, 10%, 20%, and 30% of fishmeal with acid-fermented chicken intestinal waste silage, and in accordance with four treatments, each with four replicates, were designed as Control T0, T1, T2, and T3 diets, respectively. Fish were fed twice a day at a rate of 5% of their body weight. The growth performance and haemato-biochemical parameters were significantly affected by dietary treatments (p < 0.05). T2 yielded the best growth performance, with the highest final weight (797.68 ± 5.19 g), body weight gain (576.25 ± 5.03 g), SGR (1.15 ± 0.01), and weight gain percentage (260.25 ± 2.2%) in comparison to other treatments (p < 0.05). Haematological parameters, including haemoglobin (9.18 ± 0.45 g/dL), RBC (1.45 ± 0.06 × 10⁶/mm³), and haematocrit (37.32 ± 0.18%), were also highest in T2, while ALT and AST were lowest, indicating improved hepatic health. T3 showed a decline in growth and haemato-biochemical indices, with elevated cholesterol (42.19 ± 3.17 mg/dL) and triglycerides (39.15 ± 2.68 mg/dL). The lowest FCR was recorded for T2 (1.73 ± 0.01) depicting improved feed utilisation. Haematological parameters such as haemoglobin (9.18 g/dL) and RBC (1.45 × 10⁶/mm³) improved progressively up to 20% inclusion, while T3 showed a decline. Survival was recorded @100% across all treatments. Therefore, the current study demonstrated that acid-fermented CIWS can effectively replace fishmeal up to 20% in rainbow trout diets without adverse effects on growth and health indices.