年轻橄 (Paralichthys olivaceus) 的食氨酸要求
Jaehyeong Shin1, Deahyun Ko1, Mirasha Hasanthi1
1Department of Marine Life Sciences Jeju National University, Jeju 63243, Republic of Korea.
Aquaculture nutrition
|November 18, 2024
概括
确定年轻橄青的食氨酸需求对于最佳生长至关重要. 这项研究发现,17.7-18.9g/kg的氨酸对鱼类的健康和发育至关重要.
科学领域:
- 水产养殖营养水产养殖营养
- 鱼类生理学 鱼类生理学
- 动物科学动物科学
背景情况:
- 氨酸 (Val) 是一种必需的氨基酸,对鱼类的蛋白质合成和整体健康至关重要.
- 橄 (Paralichthys olivaceus) 水产养殖需要精确的营养配方,以确保最佳的生长和抗病能力.
- 了解特定的食氨酸要求对于开发具有成本效益和可持续的料策略至关重要.
研究的目的:
- 为了估计年轻橄鱼的食氨酸需求.
- 评估不同饮食中氨酸水平对生长性能,生理参数和免疫反应的影响.
- 为了提供科学支持的建议,在橄鱼的饮食中补充氨酸.
主要方法:
- 一项为期13周的养试验,涉及540只在18个水箱中储存的幼橄.
- 六种实验性饮食,分级水平的素 (4-24克/公斤) 被给三倍组.
- 分析了生长,料利用,全身成分,血液学,免疫学,基因表达和肠道形态.
主要成果:
- 4g/kg瓦林组显著减少了生长,料利用率和生存率.
- 氨酸缺乏导致蛋白质和氨酸度降低,免疫力受损,细胞因子表达改变.
- 肠道形态,包括粘膜折叠高度和组织厚度,受到低食氨酸的负面影响.
结论:
- 饮食中素缺乏会显著损害幼橄的生长,生理功能和肠道健康.
- 据估计,年轻橄鱼的食氨酸需求量为17.7-18.9g/kg (35.4-37.8g/kg原蛋白).
- 这些发现对于优化橄的料配方至关重要,以提高水产养殖的生产率和鱼类的福祉.
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