Propolis is not only good for honey bees and humans but fish and other animals, too. We've had customers use propolis extracts to treat Japanese Koi, propolis fed to dogs to reduce fever and prostate inflammation. Propolis has even been used in our vaporizers to santize poultry and pig farms!!!
Effects of
Propolis Enriched Diet on Growth Performance and Plasma Biochemical Parameters
of Juvenile European Sea Bass (Dicentrarchus labrax L.) Under Acute
Low-Temperature Stress
AquacultureNutrition, 2013 Feb
To study
the effect of propolis in crude form (CPP), prepared without any chemical
refinement (CPP) on Dicentrarchus labrax under low-temperature stress, sea bass
juveniles were randomly divided into three groups: a control group fed with basal
diet and two treatment groups fed with basal diet supplemented with 1.25 and
2.5 g kg−1 of propolis.
At the end
of a 10-week feeding trial, sea bass were exposed to low-temperature stress at
12 °C for 24 h. The growth performance, RNA/DNA ratio and changes in serum
biochemical parameters were investigated. Dietary intake of propolis stimulated
the specific growth rate (SGR), feed conversion efficiency (FCE), RNA/DNA ratio
and alkaline phosphatase (ALP) enzyme activity, while decreasing plasma
triglycerides and aspartate aminotransferase (AST) activity. Supplement of 2.5
g kg−1 CPP in diet significantly increased the mean SGR and FCE up to 9% and
13.4%, respectively, in comparison with the control group. Low-temperature
stress elevated serum triglycerides, glucose and cortisol levels in all groups;
however, glucose and cortisol reached significantly lower end values in group
receiving highest amount of propolis in diet.
This study
suggests that ingestion of basal diet supplemented with 2.5 g kg−1 of propolis
could prevent adverse effects of low-temperature stress and promote the growth
of sea bass.
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