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Effects of supplementation of algae (Sargassum ilicifolium) on growth, survival and body composition of rainbow trout Oncorhynchus mykiss | ||
| Iranian Journal of Fisheries Sciences | ||
| مقاله 16، دوره 15، شماره 1، فروردین 2016، صفحه 194-205 اصل مقاله (469.6 K) | ||
| شناسه دیجیتال (DOI): 10.22092/ijfs.2018.114523 | ||
| نویسندگان | ||
| N Zamannejad* ؛ H Emadi؛ M Hafezieh | ||
| چکیده | ||
| The effects of substituting dietary protein sources with different levels of Sargassum ilicifolium on growth, survival and body composition of rainbow trout Oncorhynchus mykiss were investigated over the course of a 60 day experiment. A total of 360 juveniles (75±2.8 g) were randomly allotted to four treatment groups including (control: with 100% basal diet (BD); T1: 5% sargassum meal (SM)+95% BD; T2: 7.5% (SM)+92.5% BD and T3: 10% (SM)+90% BD. Each treatment group was divided into three replicates of 30 fish per replicate. At the end of the experiment, our results showed that replacement of 5% and 7.5 % of basal diet with sargassum meal showed significant differences in average weight and total length, feed conversion ratio (FCR), specific growth rate (SGR), weight gain percent (WG), condition factor (CF) and survival rate (SR). There were significant differences between calorie content of carcass in T2 and control with T1 and T3 (p < /em><0.05). The highest values of carcass protein content were observed in T1 (p < /em><0.05). There were significant differences between lipid content of fish in T2 and control with that of fish in T1 and T3 (p < /em><0.05). The highest values of carcass ash content were observed in T1, (p < /em><0.05) which were not significantly different from that in other treatments (p < /em>>0.05). Levels all of amino acids were higher in fish in T2. | ||
| کلیدواژهها | ||
| Protein sources؛ Sargassum ilicifolium؛ Growth؛ survival؛ Body composition؛ Rainbow trout | ||
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