Effect of Feeding Frequency on Hepatopancreatic Enzyme Activities and Body Composition in Carp, Cyprinus carpio.

• SHIKATA Takafumi

  <I>Faculty of Agriculture, Kochi University</I>

• IWANAGA Shunsuke

  <I>Faculty of Agriculture, Kochi University</I>

• SHIMENO Sadao

  <I>Faculty of Agriculture, Kochi University</I>

Bibliographic Information

Other Title

• コイ肝膵臓の酵素活性および体成分に及ぼす給餌回数の影響

Abstract

In order to investigate the effect of feeding frequency on the hepatopancreatic enzyme activities and the serum and body compositions, carp, Cyprinus carpio were fed on a commercial diet once or 3 times a day for 30 days in the experiment 1 and on a glucose-based diet once or 4 times a day for 40 days in the experiment 2. The growth, protein retention, and hepatopancreatic fat content were lower in the fish fed once a day than in those fed several times a day in both experiments. The activities of lipogenic enzymes such as glucose-6-phosphate dehydrogenase and NADP-malate dehydrogenase were not affected by feeding frequency. In both experiments, the activities of gluconeogenic and amino acid-degrading enzymes such as glucose-6-phosphatase and aspartate aminotransferase were somewhat high in the fish fed once a day. These results suggest that the extremely low feeding frequency slightly accelerates amino acid degradation and gluconeogenesis in the hepatopancreas of carp, resulting in a low protein retention.

Journal

• Aquaculture Science

  Aquaculture Science 43 (1), 83-88, 1995

  Japanese Society for Aquaculture Science

Keywords

• Carp
• Body composition
• Carbohydrate-metabolizing enzyme
• Feeding frequency

Details

• CRID: 1390282679692953344
• NII Article ID: 10004769144
• NII Book ID: AN00124667
• DOI: 10.11233/aquaculturesci1953.43.83
• ISSN: 21850194
• ISSN: 03714217
• Web Site: https://agriknowledge.affrc.go.jp/RN/2010570919
• Text Lang: en
• Data Source:
  • JaLC
  • IRDB
  • CiNii Articles
• Abstract License Flag: Disallowed