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采用高度不饱和脂肪酸 (HUFA)营养强化的轮虫、轮虫与卤虫组合投喂中华绒螯蟹幼体 ,以各期幼体的存活率为评判指标 ,对不同饵料及其组合的投喂效果进行了探讨。研究结果表明 :轮虫是中华绒螯蟹早期幼体 (Ⅰ、Ⅱ期 )的适口饵料 ,幼体存活率随轮虫密度的增加而逐渐上升 ,但当轮虫数量超过最适密度时 ,幼体存活率反而有所下降。其中 ,未强化的轮虫最适投喂密度为 6 0ind·mL-1,强化轮虫最适密度为40ind·mL-1。状Ⅰ、Ⅱ期投喂 40ind·mL-1轮虫 ,从Ⅲ期开始投喂 10ind·mL-1卤虫无节幼体 ,能较好地满足中华绒螯蟹幼体发育的营养需求 ,提高大眼幼体的存活率。表明强化幼体饵料HUFA特别是EPA和DHA能有效地促进幼体的发育与存活和脱壳率
By using highly enriched fatty acid (HUFA) fortified rotifer, rotifer and Artemia were fed on the Eriocheir sinensis larvae. The survival rate of each larvae was used as the evaluation index to evaluate the effects of feeding on different diets and combinations Exploring. The results showed that rotifer was the preferred diet for the early larvae (Ⅰ, Ⅱ) of Eriocheir sinensis. The survival rate of larvae increased with the increase of rotifers density. However, when the number of rotifers exceeded the optimum density, the larval survival rate But declined. Among them, the unfertilized rotifer optimum feeding density was 60ind · mL-1, and the optimum density of rotifers was 40ind · mL-1. The 40ind · mL-1 rotifers were fed on the ¢ ñ- and ¢ ò- stages, and fed with 10ind · mL-1 Artemia nauplii from stage ¢ ó, which could better meet the nutritional requirements of larval development of Eriocheir sinensis Erythrocyte survival rate. The results showed that HUFA, especially EPA and DHA fortified juvenile food, could effectively promote larval development and survival and huller rate