草鱼和青鱼消化酶的分布特性

Distribution Patterns of Digestive Enzyme Activities in Grass Carp (Ctenopharyngodon idellus) and Black Carp(Mylopharyngodon piceus)

选择草鱼(C tenopharyngodon idellus)和青鱼(Mylopharyngodon piceus)作试验鱼,对它们消化道的酸性蛋白酶、碱性蛋白酶、淀粉酶以及三酰基甘油脂酶沿消化道及肝脏和胰腺中的活性分布进行了比较研究。研究表明:这些酶在消化道中呈现不同的分布规律,在肝脏和胰腺中酶的活性高于在消化道中相应酶的活性;同种鱼不同消化酶的分布有所差别;两种鱼消化组织中的各种酶活性分布规律也有差别;青鱼和草鱼的主要消化酶在不同消化器官中的分布有较大差别。

Grass carp（ a herbivorous fish）and black carp（ a carnivorous fish）were selected to investigate distribution patterns of their digestive enzymes including pepsin-like enzymes, trypsin-like enzymes, amylase and lipase along the intestine, liver and pancreas. The present investigations showed that these digest enzymes displayed different distribution patterns in digestive tract; the activities of the enzymes in liver and pancreas were higher than those in digestive tract,, different digest enzymes of the same species had different distribution patterns ; the distribution patterns of the enzyme activities in digestive tissue of the two species are different; the distribution patterns of the main digest enzymes in different digestive organs of the two species were quite different.