effects of long term dietary administration of β-glucan on the growth, survival and some blood parameters of striped catfish, pangasianodon hypophthalmus (siluriformes: pangasiidae)
نویسندگان
چکیده
the present experiment was undertaken to study the effect of different dosages of β-glucan on the growth, survival and physiological responses in juvenile striped catfish ( pangasianodon hypophthalmus ). over nine weeks of feeding fish with a diet containing 0, 0.5, 1 and 2% β-glucan (as control, g1, g2 and g3 group, respectively), some blood parameters such as serum lysozyme activity, total protein and glucose values as well as fish survival rate and growth performance were determined. no significant differences were observed either in the growth and survival indexes or in the glucose value in fish fed with and/or without different ratios of β-glucan. however, highest serum lysozyme activity was detected in fish fed on a diet containing 0.5% of β-glucan (10.8 µg/ml serum vs 8.00 µg/ml serum, in control group). in addition, the protein content was significantly increased in all β-glucan treatments compared to control. thus, the administration of β-glucan might be beneficial for health enhancement in striped catfish juveniles.
منابع مشابه
Growth performance and some haematological parameters of ornamental striped catfish (Pangasianodon hypophthalmus) fed on dietary nucleotide
The effects of dietary nucleotide (NT) on growth performance and some haematological parameters of striped catfish (Pangasianodon hypophthalmus) were investigated. Different levels of the NT (0, 0.25, 0.5, 0.75, 1%) in the diet were used for 10 weeks starting on the fish weighted (1.52 ± 0.11 g). The results showed that NT supplementations did not improve final weight, weight gain, food conserv...
متن کاملgrowth performance and some haematological parameters of ornamental striped catfish (pangasianodon hypophthalmus) fed on dietary nucleotide
the effects of dietary nucleotide (nt) on growth performance and some haematological parameters of striped catfish (pangasianodon hypophthalmus) were investigated. different levels of the nt (0, 0.25, 0.5, 0.75, 1%) in the diet were used for 10 weeks starting on the fish weighted (1.52 ± 0.11 g). the results showed that nt supplementations did not improve final weight, weight gain, food conserv...
متن کاملthe effects of keyword and context methods on pronunciation and receptive/ productive vocabulary of low-intermediate iranian efl learners: short-term and long-term memory in focus
از گذشته تا کنون، تحقیقات بسیاری صورت گرفته است که همگی به گونه ای بر مثمر ثمر بودن استفاده از استراتژی های یادگیری لغت در یک زبان بیگانه اذعان داشته اند. این تحقیق به بررسی تاثیر دو روش مختلف آموزش واژگان انگلیسی (کلیدی و بافتی) بر تلفظ و دانش لغوی فراگیران ایرانی زیر متوسط زبان انگلیسی و بر ماندگاری آن در حافظه می پردازد. به این منظور، تعداد شصت نفر از زبان آموزان ایرانی هشت تا چهارده ساله با...
15 صفحه اولThe effects of dietary Zhumeria majdae extract on growth indices, hematology and immunology of catfish Pangasianodon hypophthalmus
Low survival at early stages of life is of great concern for fish culturists. Considering the effects of herbal immunostimulants on innate immune response and growth improvement of aquatic animals, the impacts of a native herb of Hormozgan province named Zhumeria majdae extract on growth indices and immunology of catfish fingerlings Pangasianodon hypophthalmus with mean weight of 1.27±0.24 were...
متن کاملthe effects of planning on accuracy and complexity of iranian efl students’ written narrative task performance
this study compared the different effects of form-focused guided planning vs. meaning-focused guided planning on iranian pre-intermediate students’ task performance. the study lasted for three weeks and concentrated on eight english structures. forty five pre-intermediate iranian students were randomly assigned to three groups of guided planning focus-on-form group (gpfg), guided planning focus...
15 صفحه اولthe effects of time planning and task complexity on accuracy of narrative task performance
هدف اصلی این تحقیق بررسی تاثیر برنامه ریزی زمانی، هم چنین افزایش میزان پیچیدگی تکالیف در نظر گرفته شده بصورت همزمان، بر دقت و صحت و پیچیدگی عملکرد نوشتاری زبان آموزان می باشد. بدین منظور، 50 نفر از دانش آموزان دختر در رده ی سنی 16 الی 18 سال به عنوان شرکت کنندگان در این زمینه ی تحقیق در نظر گرفته شدند و به دو گروه آزمایشی و کنترل بصورت اتفاقی تقسیم شدند. اعضای گروه آزمایشی هر دو تکلیف ساده و پی...
منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
iranian journal of ichthyologyجلد ۲، شماره ۳، صفحات ۱۹۴-۲۰۰
کلمات کلیدی
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023