Title: Correlation Between Body Length,Body Weight,Water Quality and Digestive Enzyme Activities of Fish
Abstract: In the present study,we investigated the correlation between digestive enzyme activities and morphological indexes,environmental factors of four fishes in ponds with grass carp(Ctenopharyngodon idellus) as the main stocking species.The result showed that water temperature had significant positive correlation(P0.05) with intestinal and hepatopancreas pepsin for grass carp,but had negative correlation(P0.05) with intestinal trypsin,intestinal and hepatopancreas lipase for grass carp.Water temperature also had significant negative correlation with hepatopancreas amylase for silver carp(Hypophthalmichthys molitrix).Total nitrogen and phosphorus had positive correlation with most of the enzyme activities for the four fishes.COD had significant negative correlation with lipase and amylase activities for paddlefish(Polyodon spathula).The hardness and alkalinity had positive correlation with pepsin activity except silver carp,but had negative correlation with trypsin,lipase and amylase.The body length and weight had significant positive correlation with intestinal trypsin,lipase and amylase activities for grass carp and bighead carp(Aristichthys nobilis),which also had significant positive correlation with alimentary organs pepsin for paddlefish.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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