نوع مقاله : تغذیه
نویسندگان
1 گروه شیلات، دانشکده علوم و فنون دریایی، دانشگاه هرمزگان، بندرعباس، ایران
2 گروه شیلات، دانشگاه گیلان، صومعه سرا، ایران
3 گروه شیلات، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران
4 پژوهشکده مطالعات دریاچه ارومیه، دانشگاه ارومیه، ارومیه، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
This study was conducted to evaluate and compare the effectiveness of replacement of fish meal by Spriulina platensis and chlorella vulgaris meal in Pacific white shrimp, Litopenaeus vannamei during 8 weeks’ period culture. Shrimp with an average weight of 2.6± 0.2 g were examined in a completely randomized design with 9 treatments included a control group (fed a diet without microalgae) and 8 treatments (fed diets containing 25, 50, 75 and 100% of Spirulina or Chlorella powder). After eight weeks of feeding trial, shrimp fed diet with 25% substitution ofC. vulgaris showed significantly improved final weight and WG compared to other treatments (P<0.05), while SGR and FCR did not show any significant differences between treatments (P>0.05). Shrimp fed diet with 100% S. platensis showed significantly higher amount of protein compared to other treatments (P<0.05). However, wasn’t found any significant differences in the amount of wet, lipid and ash between treatments (P>0.05). It was also observed that the content of long-chain polyunsaturated fatty acids such as alpha-linolenic acid, docosahexaenoic acid, eicosapentaenoic acid, linoleic acid and arachidonic acid was mostly higher in shrimp fed diet with microalgae than the control group (P<0.05). In conclusion, this study indicated that both microalgae especially in 25% chlorella could be incorporated in the diet of juvenile L. vannamei with no adverse effects on the performance of shrimp.
کلیدواژهها [English]