Details

Autor(en) / Beteiligte

• Deng, Junming
• An, Qingcong
• Bi, Baoliang
• Wang, Qiuju
• Kong, Lingfu
• Tao, Linli
• Zhang, Xi

Titel

Effect of ethanolic extract of propolis on growth performance and plasma biochemical parameters of rainbow trout (Oncorhynchus mykiss)

Ist Teil von

• Fish physiology and biochemistry, 2011-12, Vol.37 (4), p.959-967

Ort / Verlag

Dordrecht: Springer Netherlands

Erscheinungsjahr

2011

Quelle

MEDLINE

Beschreibungen/Notizen

• This study was conducted to evaluate the effect of ethanolic extract of propolis (EEP) on growth performance and plasma biochemical parameters of rainbow trout ( Oncorhynchus mykiss ). Graded levels of EEP [0 (control), 1, 2, and 4 g kg −1 diet] were fed to trout juveniles (mean weight 7.73 ± 0.17 g) for 10 weeks. Dietary EEP supplementation regardless of inclusion level significantly improved the specific growth rate of fish. Similarly, supplemental EEP generally improved the feed efficiency ratio and protein efficiency ratio, but no significant differences were observed between the 1 g kg −1 EEP group and the control group. In addition, dietary EEP supplementation generally increased the plasma superoxide dismutase, lysozyme, total antioxidant capacity, glutathione peroxidase, and catalase activities, but decreased the plasma malondialdehyde level. The plasma triglycerides level was significantly lower in the 1 or 4 g kg −1 EEP group as compared with the control group. Dietary EEP supplementation generally decreased the plasma aspartate aminotransferase and alanine aminotransferase activities, but increased the hepatic aspartate aminotransferase and alanine aminotransferase activities. These results indicate the potential to use the EEP as a growth promoter, hepatoprotective agent, and immunostimulant for rainbow trout.