Published in Scientific Papers. Series D. Animal Science, Vol. LXVI, Issue 2
Written by Alina ANTACHE, Stefan-Mihai PETREA, Ira-Adeline SIMIONOV, Aurelia NICA, Victor CRISTEA, Puiu Lucian GEORGESCU, Cătălina ITICESCU, Alin CIOBÎCĂ
The purpose of this study was to investigate the effect of dietary supplementation with sea buckthorn and vitamin E on the physiological status of Oreochromis niloticus species. The experimental design consists in a four experimental diet: V1 - control, V2 - 1% sea buckthorn/kg feed, V3 - 500 mg vitamin E/kg feed and V4 - 1% sea buckthorn+500 mg vitamin E/kg feed. The results revealed that dietary supplementation with this phytobiotic and vitamin contributed to the emergence of significant changes compared to the control variant at the level of the number of erythrocytes, erythrocyte constants (MCV, MCH, MCHC), glucose concentration and total protein. In variant V4 it was observed an increase of erythrocyte constants (MCV and MCH) and a reduction of the number of erythrocytes. Regarding to the leukocyte reaction, in V2, V3 and V4 variants was observed an improvement of the fish physiological status compared to the fish from control variant. In conclusion, the dietary supplementation with sea buckthorn and vitamin E (V4) presented a synergistic effect on the welfare status of Nile tilapia reared in a recirculating aquaculture system.
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