Effect of dietary taurine and lipid contents on conjugated bile acid composition and growth performance of juvenile Japanese flounderParalichthys olivaceus
| Autor: | Masahito Yokoyama, Kenji Ishihara, Toshio Takeuchi, Kazuharu Nomura, Shin-Kwon Kim, Hideki Tanaka, Yuko Murata, Hiroyuki Matsunari |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
chemistry.chemical_classification
medicine.medical_specialty Taurine Bile acid Paralichthys medicine.drug_class Taurochenodeoxycholic acid Aquatic Science Biology biology.organism_classification Taurocholic acid Olive flounder Amino acid chemistry.chemical_compound Fish meal Endocrinology chemistry Internal medicine medicine |
| Zdroj: | Fisheries Science. 74:875-881 |
| ISSN: | 1444-2906 0919-9268 |
| DOI: | 10.1111/j.1444-2906.2008.01602.x |
| Popis: | The effects of dietary taurine levels and lipid contents on the conjugated bile acid composition and growth performance of juvenile Japanese flounder Paralichthys olivaceus were investigated. Six types of diet (three different levels of taurine at two different levels of lipid) were fed to juveniles (average body weight, 0.04g). Fishmeal that was washed with 70% ethanol to remove taurine was used as the sole protein source. Feeding experiments were carried out at 20°C for 6 weeks. At the end of the experiments, fish were weighed and analyzed for free amino acids in the body and the composition of the conjugated bile acids. The body weight and percent weight gain of the juveniles were improved by the dietary taurine supplementation. The taurine contents of the whole body and tissues increased with the increase of the dietary taurine contents. The conjugated bile acids in the gall bladder consisted of taurocholic acid and taurochenodeoxycholic acid, which increased with the increase of the dietary taurine level. Taurocholic acid accounted for more than 95% of the total conjugated bile acids. This indicates that taurine is the sole amino acid to conjugate bile acid in Japanese flounder. |
| Databáze: | OpenAIRE |
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