Publication Date:
2021-05-19
Description:
Intensive culture of rainbow trout, usually done using several different methods.The objective of this study was to compare fish performance and welfare in a new design of Foster-lucas ponds (FLP) and a raceway ponds (RP) under field conditions. Currennt study was designed in two treatment with three repeats. Each pond was randomly stocked by rainbow trout fish with initial average weight of approximately 51±5 g. Stocking density was 120n/m3 during study. After 10 months of trial, fish fed diets with comertial diet (Chineh Company). Feeding operation conducted according to the manuals by consideration of water temprature, fish waight and biomas. During the 10 months experiment, the fish survival rate was high (97.39 and 98.05%). No significant differences in growth parametres were observed between RP and FLP, but in all parametres FLP was higher than RP Final weight was 0.99% higher in FLP than in RP. Water quality factors (Dissolved oxygen, PH) was better in FLP. The results confirm that when water quality is maintained in safe level ranges, growth rate of rainbow trout attained in FLS are comparable to those in RP.
Description:
Iranian Fisheries Science Research Institute
Description:
Published
Keywords:
Rainbow trout
;
Oncorhynchus mykiss
;
Fish culture
;
New design of Foster-lucas pond
;
Raceway ponds
;
Culture
;
Stocking
;
Density
;
Diet
;
Feeding
;
Temperature
;
Biomass
;
Growth
;
Dissolved oxygen
;
pH
Repository Name:
AquaDocs
Type:
Report
,
Refereed
Format:
39pp.
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