R. Ghorbani Vaghei
[ 1 ] - Production of artificial diets for female broodstock of western white shrimp (Litopenaeus vannamei) and study on their singular effect
Advantages of pelleted feeds in terms of storage, transportation and lower costs compared to natural fresh feed justified the replacement of artificial feeds instead of natural ones partially on maturation performances. This study comprised nine treatments (with three replications) including control treatment: polychaete worm (Perinereis nuntia), Squid and calf liver (natural feed); T1: pellet ...
[ 2 ] - Production of soybean meal-based feed and its effect on growth performance of western white shrimp (Litopenaeus vannamei) in earthen pond
The effects of two diets, a control diet (commercial feed with 39% crude protein) and an experimental diet (prepared based on 42% soybean meal with 38% crude protein), on growth performance of western white shrimp (Litopenaeus vannamei) in six 0.4-ha-earthen ponds (three replications per treatment) with 25 per m2 density, were investigated. There was no significant difference in final weight (m...
[ 3 ] - مقایسه روشهای مختلف کشت دینوفلاژله مضرCochlodinium polykrikoides در شرایط آزمایشگاهی
کوکلودینیومCochlodinium polykrikoides)) یک دینوفلاژل مضر بوده که با شکوفایی خود در آبهای ساحلی جهان بعنوان یکی از عوامل مرگ و میر ماهیان شناخته شده واز سال 1386 در آبهای خلیج فارس مشاهده شده است.کشت جلبک کوکلودینیوم با استفاده از محیط کشتهای مختلفی شامل f/2(تغییر یافته)، گیلارد (f/2-Si)، TMRL، Conway وESMانجام شد. کشت کوکلودینیوم در لولههای آزمایش، ارلنهای 1000-100 میلیلیتری و آکواریومها...
[ 4 ] - بررسی مقایسه جایگزینی طیف غذای مصنوعی دستساز و وارداتی با غذای زنده در تغذیه مراحل زوآی 1 تا پست لارو 15 میگوی پاسفید غربی
غذاهای زنده از ضروریات تغذیه مراحل لاروی اکثر آبزیان دریایی و بخصوص میگو است که در سالهای اخیر و بدلیل هزینه‌های بالای تولید آنها، تلاش در جهت جایگزینی با غذاهای مصنوعی بسیار مورد توجه قرار گرفته است. هدف این مطالعه نیز با توجه به فراگیر شدن پرورش میگو وانامی در کل کشور در همین راستا است. در این تحقیق میگوی پاسفید غربی از مرحله زوآی 1 تا مایسیس و سپس تا پست لارو 15 در ظروف پلاستیکی 20 لیتری، ب...
[ 5 ] - Production of artificial diets for female broodstock of western white shrimp (Litopenaeus vannamei) and study on their singular effect
Advantages of pelleted feeds in terms of storage, transportation and lower costs compared to natural fresh feed justified the replacement of artificial feeds instead of natural ones partially on maturation performances. This study comprised nine treatments (with three replications) including control treatment: polychaete worm (Perinereis nuntia), Squid and calf liver (natural feed); T1: pellet ...
[ 6 ] - Production of soybean meal-based feed and its effect on growth performance of western white shrimp (Litopenaeus vannamei) in earthen pond
The effects of two diets, a control diet (commercial feed with 39% crude protein) and an experimental diet (prepared based on 42% soybean meal with 38% crude protein), on growth performance of western white shrimp (Litopenaeus vannamei) in six 0.4-ha-earthen ponds (three replications per treatment) with 25 per m2 density, were investigated. There was no significant difference in final weight (m...
[ 7 ] - شرایط نگهداری ماهیان خاویاری در آکواریوم
با توجه به قدمت ماهیان خاویاری، زیبایی و جذابیت ظاهری آنها تمایل برای نگهداری این ماهیان در آکواریوم در حال افزایش است. 27 گونه از خانواده ماهیان خاویاری در جهان وجود دارند که در دریاچه ها و رودخانه های نیم کره شمالی کره زمین سکنی گزیده اند. در دریای خزر 6 گونه از ماهیان خاویاری وجود دارد. در بین ماهیان خاویاری دریای خزر و حوضه آن، ماهیان استرلیاد (Acipenser ruthenus) و اوزون برون (Acipense...
[ 8 ] - Effects of Artemia nauplii enrichment with a bacterial species (Weissiella koreensis) on growth performance and survival rate of stellate sturgeon larvae (Acipenser stellatus)
Artemia franciscana nauplii was enriched with a bacterial species Weissiella koreensis (lactic acid gram-positive) isolated from the alimentary tract of Stellate sturgeon (Acipenser stellatus), at 3 levels. Treatments included T1: 6.9×104 colony-forming units (CFU) mL-1, T2: 6.9×105 CFU mL-1, T3: 6.9×106 CFU mL-1 and their effects were compared with the control diet (no probiotic were added). E...
[ 9 ] - The role of corn starch, sodium smectite and urea formaldehyde in enhancing the food stability of aquatic organisms
Binders are substances of natural or artificial origin and important in the production of aquatic diets. The binders increase the stability and ability to produce diets and prevent pellets from breaking down in water and during transport. Depending on the raw materials used, the method of making the diet and amount of milling used, the type of aquatic species, and the amount of milling, the typ...
[ 10 ] - The effect of native probiotic on growth rate and some of the hematological and immune system parameters of Huso huso fingerling
The effect of native probiotic (mixtures of Lactococcus lactis and Lactococcus lactis ) on growth rate and some of the hematological and immune system parameters of juvenile Huso huso were investigated.. One hundred fifty six Huso huso individual with average weight of 2.92±0. 16gr ± SD were fed by company Biomar diet (protein: 47%, lipid: 16%, carbohydrate:3/2%) that add probiotic to level of...
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