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Title

EFFECT OF BETAINE AS A FEED ATRACTANT ON GROWTH, SURVIVAL AND RESISTANCE TO HEAT AND SALINITY STRESSORS ON WILD COMMON CARP (CYPRINUS CARPIO) JUVENILE

Writers

 SAFI AL HOSSEINI SEYED ABOTALEB | AKRAMI REZA

Pages

 Start Page 15 | End Page 24

Keywords

WILD CARP (CYPRINUS CARPIO)Q2

Abstract

 A 12-week feeding experiment was conducted to evaluate the effect of dietary BETAINE as a feed attractant on GROWTH, SURVIVAL and resistance to some environmental STRESSors on wild Common carp (Cyprinus carpio Linnaeus, 1758) juvenile. Fish by the weight of 2.51±0.07 g and density of 20 fish per aquarum. Put through Six treatments of different levels of betafin including 0 (control), 0.5%,1%, 1.5%, 2% and 2.5% added to diet containing 35% protein and 3% lipid. At the end of experiment, final GROWTH and feeding indices including final weight ,food conversion ratio ,specific GROWTH rate ,survival rate and resistance to environmental STRESSors including thermal (35oc) and salinity (35 g/lit) STRESS assessed. According to the results of this study, a general enhanced GROWTH performance and feed efficiency were observed in fish fed on the diet containing 2.5% betain (P<0.05). There were no significant differences in SURVIVAL rate among all treatment groups (P>0.05). The highest of SURVIVAL time after salinity and thermal challenge were observed in 2.5% betain (P<0.05). The results showed that the addition of betain at the level of 2.5% to the diet of wild common carp improves GROWTH performance, feeding efficiency and resistance to environmental STRESS.

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