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首页> 外文期刊>Aquaculture >Energy, protein and amino acid requirements for maintenance and efficiency of utilization for growth of Atlantic salmon post-smolts determined using increasing ration levels.
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Energy, protein and amino acid requirements for maintenance and efficiency of utilization for growth of Atlantic salmon post-smolts determined using increasing ration levels.

机译:使用增加的定量水平确定维持大西洋鲑鲑鱼后代生长所需的能量,蛋白质和氨基酸需求以及利用效率。

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摘要

Ration levels were used to determine the digestible protein (DP) and amino acids as well as digestible (DE) and metabolizable energy (ME) requirements of Atlantic salmon post-smolts for maintenance and the efficiency of utilization for gain above maintenance. The salmon (96 g) were held in seawater at a temperature of 10 degrees C and were fasted for 28 days or fed incremental ration levels of a fishmeal-based diet for 51 days. The composition of gain was determined by the comparative slaughter technique. The relationships between intake of digestible or metabolizable nutrients or energy and gain of those nutrients or energy were linear (R2
机译:定量水平用于确定大西洋鲑鱼在熏养后的可消化蛋白质(DP)和氨基酸以及可消化(DE)和代谢能(ME)的需要量,以及获得高于维持水平的利用率。将鲑鱼(96 g)置于温度为10摄氏度的海水中,禁食28天或以鱼粉为基础的日粮定量饲喂51天。增益的组成通过比较屠宰技术确定。可消化的或可代谢的营养素或能量的摄入量与这些营养素或能量的获取之间的关系在零摄入量与最大自愿摄入量之间呈线性关系( R 2 d -1 ,并且DE和ME的利用效率为0.80+或-0.01和0.82+或-0.01。 DP获得的利用效率为0.64+或-0.01,可消化氨基酸总和的利用率为0.57+或-0.02。利用各个氨基酸获得增益的效率从色氨酸的0.45到组氨酸的0.65不等。 DP的维护要求为117.5 mg kg -0.7 d -1 ,氨基酸的可消化总量为204.0 mg kg kg -0.7 d -1 。单个氨基酸的维持要求从蛋氨酸和色氨酸的4.3 mg kg -0.7 d -1 到20.9 mg kg -0.7 d -1 代表亮氨酸。结果表明,应更多地强调确定单个氨基酸和氨基酸总量而不是粗蛋白的维持要求和利用率,以达到高于维持的水平。

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