| Synergistic Effects of Dietary Sodium Selenite and Pediococcus acidilactici on Growth Performance in Rainbow Trout (Oncorhynchus mykiss) |
| Paper ID : 1080-ICIAQUA |
| Authors |
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Masoud Kousha *1, mehdi mohammadalikhani2, Sakineh Yeganeh3, Abdolsamad Keramat3 1Coldwater Fisheries Research Center (CFRC), Iranian Fisheries Sciences Research Institute (IFSRI), Agricultural Research, Education and Extension Organization (AREEO), 46733-11802 Tonekabon, Iran 2Coldwater Fisheries Research Center (CFRC), Iranian Fisheries Sciences Research Institute (IFSRI), Agricultural Research, Education and Extension Organization (AREEO), 46773-11802 Tonekabon, Iran 3Department of Fisheries, Faculty of Animal Science and Fisheries, Sari Agricultural Sciences and Natural Resources University, Km 9 Darya Boulevard, P.O. Box: 578, Sari, Iran |
| Abstract |
| Purpose: The interaction effects of dietary sodium selenite and P. acidilactici on growth in rainbow trout (Oncorhynchus mykiss) was investigated. Method: A 3 × 3 factorial design experiment was conducted with nine purified diets including three levels of sodium selenite (0, 1 and 2 mg/kg) and three levels of P. acidilactici (0, 7 and 9 log CFU/g) for 8 weeks. At the end of the trial, growth performance was evaluated by mean final weight gain (WG), specific growth rate (SGR), feed conversion ratio (FCR), condition factor (K) and survival rate (S). Calculations were carried out using the formulae: WG = FW – IW; SGR = 100 ((ln FW – ln IW)/T); FCR = FI/WG; K = (100 × FW)/FL3; S = 100 (FFN/ IFN), where FW = final weight (g), IW = initial weight (g), T = duration of feeding (days), FI = feed intake (g), FL = final length (cm), FFN = final fish number, and IFN = initial fish number. Results: After 8 weeks of feeding, weight gain were increased from 31.6 ± 4.87 to 44.96 ± 2.42 g, and SGR from 1.28 ± 0.13 to 1.63 ± 0.01 % per day by increasing dietary sodium selenite and P. acidilactici levels compared to control (p < .05), while FCR were decreased from 1.28 ± 0.03 to 1.16 ± 0.03, and condition factor from 1.52 ± 0.05 to 1.29 ± 0.03 g/cm3 by increasing dietary sodium selenite and P. acidilactici levels in comparison to control (p < .05). However, survival rate was ranged from 96% to 100%, which was not significantly different between the dietary treatments (p > .05). Conclusions: The findings revealed the synergistic effect of dietary sodium selenite and P. acidilactici on growth in rainbow trout (O. mykiss). |
| Keywords |
| Keywords: Sodium selenite (Na2SeO3); Lactic acid bacteria (LAB); Pediococcus acidilactici; Rainbow trout; Oncorhynchus mykiss. |
| Status: Abstract Accepted (Poster Presentation) |