Mineral Nutrition in Fish-XXVI. A Simple Method for Determination of Available Phosphorus Content in Fish Diet.
Mineral Nutrition in Fish-XXVI. A Simple Method for Determination of Available Phosphorus Content in Fish Diet.
复制标题
鱼中的矿物质营养-XXVI。
DOI：
10.2331/suisan.58.2095
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发表时间：
1992
影响因子：
0.4
通讯作者：
Takeshi Watanabe
中科院分区：
文献类型：
--
作者：
S. Satoh;V. Viyakarn;Y. Yamazaki;T. Takeuchi;Takeshi Watanabe
采用间接法测定了鲤鱼和虹鳟鱼两种消化系统不同的鱼粉型饲料中添加和不添加磷的有效磷含量。将这些值与用去离子水（Fr. I）、80%乙酸（Fr. II）和0.25M盐酸（Fr. III）分级分离的P的量进行比较，以简化鱼饲料中有效P含量的估计。测定的鲤鱼鱼粉饲料中有效磷含量与去离子水提取的磷量（Fr. I）相一致。另一方面，在虹鳟鱼饲料中没有补充磷的有效磷含量被发现是相似的磷的总和在Fr。I、II和III，但补充磷的日粮中的磷含量似乎与FR. I中的磷含量相当。本研究结果表明，去离子水提磷值可作为鲤鱼饲料中有效磷含量的参考值，而不受鱼粉种类和磷添加量的影响。虹鳟鱼的去离子水提磷值也可作为可溶性磷充足的饲料中有效磷的参考值。I、II和III可能是在不添加可溶性磷的饲料中进行估计所必需的。
The available phosphorus (P) contents in fish meal diets with or without supplemental P were determined by the indirect method in common carp and rainbow trout, which have different digestive systems. These values were compared with the amount of P fractionated with deionized water (Fr. I), 80% acetic acid (Fr. II), and 0.25M hydrochloric acid (Fr. III), in order to simplify estimation of available P content in a fish feed. The determined available P contents in the fish meal diets for carp appeared to coincide with the amount of P extracted by deionized water (Fr. I). On the other hand, the available P contents in rainbow trout diets without supplemental P were found to be similar to the sum of P in Frs. I, II, and III, but those in the diets with supplemental P appeared to be equivalent to the amount of P in Fr. I. The results obtained in this study suggest that the value of P extracted with deionized water can be used for available P contents in carp feeds regardless of the kind of fish meal or sup-plementation of P. In the case of rainbow trout, P extracted with deionized water also can be used as an available P for the diets containing sufficient soluble P, but the summation of P in Frs. I, II, and III may be necessary for the estimation in feeds without supplementation of soluble P.