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The effect of dietary inclusion of amaranth meal on hematology and blood biochemistry, of rainbow trout Oncorhynchus mykiss was examined. The fish (mean length 35.2 ± 0.6 cm; mean weight 524.8 ± 28.5 g) were divided into three groups: a reference group (RF) fed commercial trout pellet and two experimental groups (EF5 and EF10) fed feeds containing 5.0% and 10.0% of amaranth meal respectively. Determined...
The aim of the study was to compare the share of hatchery-reared lake trout Salmo truttam.lacustrisin catches of fingerlings in the upper Wda and the Pilica Rivers in Autumn, following the stocking fish in spring 2005. Larvae in number of 40 thousand had been previously exposed to the thermal shock procedure (temperature decrease from 8.0 to 2.5oC for 2 hours, and back to initialvalue), then released...
The aim of the this study was the to assessment of use the amaranth meal in feed for rainbow trout Oncorhynchus mykiss. Two experimental feeds contained 5.0% and 10.0% of amaranth meal were prepared and compared to reference diet (commercial feed) containing similar amountsof specific nutrients. Initial body wet weight of experimental trout was 524.8±28.5 g and mean lengthof 35.2±0.6 cm. Feed was...
Propofol, 2,6-diisopropylphenol, seems to be a good candidate as a fish anaesthetic, however, no study regarding propofol influence on fish has yet been reported. The aim of this study was to examine propofol pharmacokinetics in rainbow trout (Oncorhynchus mykiss) following bath exposure. Fish (n = 100) were exposed to an aqueous propofol bath at 12°C and 17°C; propofol concentration in the bath was...
The aim of this study was to compare physiological responses in Siberian sturgeon (Acipenser baeri) induced by propofol and CO2 anaesthesia. Two procedures were applied during the experiment. In procedure I, blood samples were collected immediately after exposure (1, 2, 5, 10 min) to the anaesthetic. In procedure II, fish were exposed to the anaesthetic for 10 minutes and then were moved to anaesthetic...
A preliminary examination was carried out into the effect that various activating liquids have on the survivability of ide Leuciscus idus (L.) embryos. It was found to be similar (54–59%) in four study groups; the embryo survivability was found to have decreased (44%) only in the group where non-sterilised tap water was used for gamete activation. A negative correlation was found between water conductivity,...
Summary. The premise that free amino acid or dipeptide based diets will resolve the nutritional inadequacy of formulated feeds for larval and juvenile fish and improve utilization of nitrogen in comparison to protein-based diets was tested in stomachless fish, common carp (Cyprinus carpio L.) larvae. We examined the postprandial whole body free amino acid (FAA) pool in fish that were offered a FAA...
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