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Copper, manganese and zinc requirements in the diet of shrimp Penaeus indicus

机译：虾对虾日粮中的铜，锰和锌需求量

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Dietary requirements of copper, manganese, and zinc were investigated for the Indian white shrimp Penaeus indicus using purified diets. Feeding trials conducted on shrimp with an average weight of 70 mg for 45 days have shown that without supplemented copper, the diet produced higher growth (p > 0.05). However, the diet with 22.7 mg% copper gave the lowest feed conversion ratio (FCR) of 2.14 (P > 0.05) and higher survival rate (81.3%). Copper content in whole body of shrimp increased with dietary copper. Shrimp fed with diets having different levels of manganese grew better on the diet (control) that had 0.21 mg of manganese per 100g. Higher levels of dietary manganese suppressed growth (P > 0.05). However, food conversion ratio (FCR) and survival rate improved when the diet contained 1.9 to 2.6 mg% manganese. In the case of zinc, the growth of shrimp improved with dietary zinc up to 23.6 mg% and declined thereafter (p > 0.05). However, the diet with 38.6 mg% zinc produced low FCR (p >0.05). Zinc concentration in shrimp body increased with the dietary levels of the element, though the body ash showed a decreasing trend.
机译：使用纯净日粮对印度白对虾印度对虾的铜，锰和锌的饮食需求进行了调查。对平均体重为70 mg的虾进行了45天的饲喂试验，结果表明，在不补充铜的情况下，日粮可产生更高的生长（p> 0.05）。然而，含22.7 mg％铜的日粮的最低饲料转化率（FCR）为2.14（P> 0.05），成活率更高（81.3％）。虾体内的铜含量随日粮铜的增加而增加。饲喂含不同水平锰的虾的日粮（对照）每100克中含0.21毫克锰，生长更好。饮食中锰含量较高会抑制生长（P> 0.05）。但是，当日粮中锰含量为1.9至2.6 mg％时，食物转化率（FCR）和存活率会提高。就锌而言，日粮锌含量高达23.6 mg％时虾的生长得到改善，此后下降（p> 0.05）。但是，含锌量为38.6 mg％的饮食产生的FCR较低（p> 0.05）。虾体内锌的含量随膳食中元素的含量而增加，尽管人体内的灰分呈下降趋势。

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