Changes of visceral properties and digestive enzymes in the herbivorous marine teleost Siganus canaliculatus fed on different diets
Changes of visceral properties and digestive enzymes in the herbivorous marine teleost Siganus canaliculatus fed on different diets
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不同饲料喂养的草食性海洋硬骨鱼Siganus canaliculatus内脏特性和消化酶的变化
DOI：
10.1007/s13131-018-1165-9
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发表时间：
2018-02
影响因子：
1.4
通讯作者：
LI Yuanyou
中科院分区：
文献类型：
--
作者：
Chen Fang;WANG Shuqi;YOU Cuihong;LI Yuanyou
沟蓝子鱼（Siganus canaliculatus）是少数几种人工养殖的食草性海洋硬骨鱼之一。为了更好地了解多生浒苔（Enteromorpha prolifra）和龙须菜（Gracilaria lemaneiformis）的消化生理，并为多生浒苔配合饲料的设计提供依据，研究了多生浒苔配合饲料（FD）、多生浒苔配合饲料（EP）和龙须菜配合饲料（GL）对多生浒苔和龙须菜配合饲料投喂8周后，多生浒苔和龙须菜配合饲料对多生浒苔和龙须菜配合饲料的消化特性和消化酶活性的影响。结果表明，RF组和FD组的肝体指数、内脏指数以及EP组和GL组的相对肠长（RIL）均显著高于其他各组。此外，肝脏和前肠的组织结构也观察到不同的饮食组之间的差异。在喂食RF的鱼中，肝核被脂质内含物转移到外周。在喂食大型藻类的鱼的前肠中发现了最高水平的粘膜褶皱。消化酶活性在前3周有明显的波动，随后趋于平稳。消化道中蛋白酶、脂肪酶和α-淀粉酶的水平分别随饲料蛋白质、脂肪和碳水化合物水平的变化而变化。虽然大型藻类显著抑制了胃蛋白酶的活性，但它增加了RIL和前肠粘膜皱襞的数量，从而补偿了对胃蛋白酶活性的影响。本研究表明，鱼消化道对不同饵料有较好的适应能力，需要3周左右的生理适应期，表明鱼具有一定的杂食性。
The rabbitfish Siganus canaliculatus is one of the few cultured herbivorous marine teleosts. To better understand the digestive physiology of this fish and provide data for designing formulated feed using macroalgae as an ingredient, the changes of visceral properties and digestive enzyme activities were investigated after the juveniles were fed on different types of food including raw fish (RF), formulated diet (FD) or macroalgae Enteromorpha prolifra (EP) and Gracilaria lemaneiformis (GL) for eight weeks. The results showed that the hepatosomatic and viscerosomatic indices in the RF and FD groups, as well as the relative intestine length (RIL) in the EP and GL groups, were significantly higher than those in other groups. Additionally, differences in the histological structure of the liver and anterior intestine were also observed among different dietary groups. The hepatic nuclei were displaced to the periphery by lipid inclusions in fish fed RF. The highest levels of mucosal folds were found in the anterior intestines of fish fed macroalgae. Digestive enzyme activity profiles showed obvious fluctuations in the first three weeks, and then leveled off in the following weeks. The levels of protease, lipase and α-amylase in the alimentary tract showed changes related to the levels of dietary protein, lipid and carbohydrate, respectively. Although macroalgae significantly inhibited the activity of protease in the stomach, it increased RIL and the number of mucosal folds in the anterior intestine so as to compensate for the influences on protease activities in the stomach. This study suggests that the digestive tract of rabbitfish can well adapt to different diets, and needs about three weeks to physiologically acclimatize to the nutritional status, thus implying that rabbitfish are somewhat omnivorous.
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影响因子：
3.5
作者：
W. Ye;Dong Han;Xiyu Zhu;Yunxia Yang;Junyan Jin;S. Xie
通讯作者：
W. Ye;Dong Han;Xiyu Zhu;Yunxia Yang;Junyan Jin;S. Xie
大豆油替代膳食鱼油对海洋草食性硬骨鱼 Siganus canaliculatus 生长性能和组织脂肪酸组成的影响
影响因子：
2
作者：
Shude Xu;Shuqi Wang;Liang Zhang;Cuihong You;Yuanyou Li
通讯作者：
Yuanyou Li
DOI：
10.18356/8d6ea4b6-en
发表时间：
2018-07
期刊：
The State of World Fisheries and Aquaculture
影响因子：
--
作者：
通讯作者：
--
影响因子：
4.5
作者：
Brinker, Alexander;Reiter, Reinhard
通讯作者：
Reiter, Reinhard
影响因子：
3.5
作者：
Md. Shah Alam Sarker;S. Satoh;K. Kamata;Y. Haga;Y. Yamamoto
通讯作者：
Md. Shah Alam Sarker;S. Satoh;K. Kamata;Y. Haga;Y. Yamamoto