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首页> 外文期刊>Aquaculture Research >Incorporation of dietary nitrogen from fish meal and pea meal (Pisum sativum) in muscle tissue of Pacific white shrimp (Litopenaeus vannamei) fed low protein compound diets.
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Incorporation of dietary nitrogen from fish meal and pea meal (Pisum sativum) in muscle tissue of Pacific white shrimp (Litopenaeus vannamei) fed low protein compound diets.

机译：将鱼粉和豌豆粉（Pisum sativum）中的膳食氮掺入以低蛋白复合饲料喂养的太平洋白虾（凡纳滨对虾）的肌肉组织中。

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摘要

Stable isotope analyses were applied to explore the relative dietary nitrogen contributions from fish meal and pea meal (Pisum sativum) to muscle tissue of Pacific white shrimp postlarvae (141+or-31 mg) fed low protein diets having different proportions of both ingredients as the sole dietary protein sources. A negative control diet was formulated to contain 100% pea meal and six more isoproteic diets to have decreasing levels of pea meal-derived nitrogen: 95%, 85%, 70%, 55%, 40% and 0% of the initial level. Growth rates were negatively correlated to dietary pea protein inclusion due to progressive essential amino acid deficiencies (sulphur amino acids, threonine, lysine, histidine). The nitrogen turnover rate significantly increased in muscle tissue of shrimps fed diets having high levels of pea meal; however, contrary to observations from a previous study using soy protein, the relative contributions of dietary nitrogen from pea meal to shrimp muscle tissue were equal or higher than expected contributions established by the dietary formulations. Results highlight the effectiveness of stable isotope analysis in assessing the nutritional contributions of alternative ingredients for aquaculture feeds and the potential suitability of pea as a source of protein (provided the diets are nutritionally balanced).
机译：应用稳定同位素分析研究了鱼粉和豌豆粉（Pisum sativum）对太平洋白虾幼虫（141+或-31 mg）饲喂低蛋白日粮（两种成分的比例不同）的肌肉相对膳食氮的贡献。唯一的饮食蛋白质来源。配制了一个阴性对照饮食，其中包含100％的豌豆粉和另外6种等蛋白饮食，以降低豌豆粉中氮的含量：初始水平的95％，85％，70％，55％，40％和0％。由于进行性必需氨基酸缺乏症（硫氨基酸，苏氨酸，赖氨酸，组氨酸），生长速度与豌豆中的蛋白质含量呈负相关。饲喂高豌豆粉日粮的虾的肌肉组织中氮的转化率显着增加;但是，与先前使用大豆蛋白进行的研究相反，豌豆粉对虾肌肉组织的膳食氮的相对贡献等于或高于膳食配方确定的预期贡献。结果强调了稳定同位素分析在评估替代成分对水产养殖饲料的营养贡献以及豌豆作为蛋白质来源的潜在适用性方面的有效性（前提是日粮在营养上保持平衡）。

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