milan米兰体育 饲料加工类型、蛋白质来源和环境盐度对凡纳滨对虾摄食行为的影响

引用

Moss AS、Brooker AJ、Ozioko SN、Nederlof MAJ、Debnath S 和 Schrama J (2024)饲料加工类型、蛋白质来源和环境盐度对凡纳滨对虾摄食行为的影响[虾的进食行为]。生物Rxiv。 https://doi.org/10.1101/2024.03.14.584959

摘要
在一项为期 8 周的试验中，在 30 ppt（前 30 天）和 5 ppt（最后 15 天）盐度条件下研究了饲料加工类型（挤压与蒸制颗粒）和蛋白质来源（大豆/豌豆与鱼粉）对凡纳滨对虾的影响。饲料包括 D1-SE 大豆/豌豆挤出、D2-SS 大豆/蒸煮豌豆、D3-FE 鱼粉挤出和 D4 (FS) 鱼粉蒸煮颗粒。没有观察到显着的重量差异。成活率（30 ppt 时为 80-97%）随盐度降低而降低，与挤压饲料相比（D1：50.00%，p0.05). Shrimp fed D2-SS and D4-FS diets had increased lipid content (6.79%, 6.36%, p0.05). Significantly lower lysine and isoleucine were noted in D2-SS. Behaviourally, at 30 ppt, D3-FE attracted significantly more shrimp (84.72%) than D1-SE (74.49%) and D2-SS (75.70%, p0.05). Click analysis showed D1-SE and D2-SS with the shortest durations (17.97, 17.24ms, respectively), and D3-FE and D4-FS the longest (20.10, 23.89ms, respectively, p0.05). Click frequency was also significantly higher in fishmeal–based diets, whereas the number of clicks was higher in shrimp fed extruded feed. Overall, extruded pellets and fishmeal diets were more favourable. These findings emphasize the importance of tailored feed strategies that consider nutritional content, feed physical properties and environmental factors for optimal shrimp feeding.