نتایج جستجو برای: بچهتاسماهی شیپ acipenser nudiventris
تعداد نتایج: 1533 فیلتر نتایج به سال:
Intraspecific and interspecific nucleotide sequence variations of the mtDNA control region (D-loop) were studied with mtDNAs isolated from tissue specimens of more than 1400 sturgeons of nine species: Russian sturgeon Acipenser gueldenstaedtii , Persian sturgeon A. persicus , Siberian sturgeon A. baerii , Amur sturgeon A. schrenkii , Fringebarbel sturgeon A. nudiventris , sterlet A. ruthenus , ...
به منظور افزایش کارایی وکاهش ضریب تبدیل غذا و بهبود شرایط فیزیولوژیک ماهی، تاثیر سطوح0،500،750 و1000 میلیگرم ال- کارنتین بر شاخصهای رشد، ترکیب لاشه و شاخصهای هماتولوژیک تاسماهی شیپ مورد مطالعه قرارگرفت. بدین منظور120عدد تاسماهی شیپ با میانگین وزن (27/1±36/49 گرم) در12 مخزن فایبرگلاس500 لیتری توزیع و با جیرههای غذایی حاوی45% پروتئین و20 مگاژول انرژی بهمیزان3% وزن بدن در 8 هفته تغذیه شدند. ...
تحقیق حاضر، به منظور بررسی اثر مکمل آهن خوراکی بر برخی شاخص های رشد بچه تاس ماهیان شیپ (A. nudiventris) انجام پذیرفت. در این تحقیق یک گروه شاهد (فاقد آهن) و چهار گروه تیمار آهن (FeSO4 .7 H2O) با غلظت های مختلف (100، 200، 250 و 300 mg/kg) نظر گرفته شد که به جیره نیمه خالص برای مدت 60 روز اضافه گردید. تغذیه دستی در سه نوبت انجام پذیرفت. زیست سنجی ماهیان در پایان هفته چهارم و در انتهای آزمایش صورت...
This study was conducted to investigate the effects of dietary Pediococcus acidilactici and folic acid (FA) and their combinations on growth performance, haematological parameters and non-specific immune response of Acipenser nudiventris. 210 individuals (initial body weight: 12.84± 1.53g) were fed seven practical diets: the basal diet as the control diet was supplemented with two levels of P.a...
Aim. The aim of this study was to conduct an analysis long‐term changes in the number sturgeon populations and its relationship with fishing regime current state Ural River basin, as well develop measures for conservation restoration their resources. Discussion. Six species inhabit waters basin: Huso huso Linnaeus, 1758; Acipenser gueldenstaedtii Brandt & Ratzeburg, 1833; persicus Borodin, ...
sturgeons are the most important fish in the caspian sea, but there are only a few reports on their parasite communities in the southern part of this sea. in this study, a total of 93 individuals of four sturgeon species, namely acipenser stellatus (n= 60), a.gueldenstaedtii (n = 12), a. nudiventris (n = 9) and huso huso (n = 12), were caught in 2 geographical regions from the southwest of the ...
Serum complement is valuable tool in determining the health status of fish. This study was conducted to examine in vitro activity of serum complement as an indicator of innate immunity in four sturgeon species, Acipenser stellatus, A. baeri, A. nudiventris and Huso huso (Chondrostei: Acipenseridae). The Effects of different temperatures, concentrations and volumes of serum on alternative comple...
The associations were quantified between daily and interannual variation in the timing of a closed population of lake sturgeon Acipenser fulvescens migration and arrival at spawning sites with stream environmental and lunar covariates. Spawning data were gathered from 1262 fish in Black Lake, Michigan 2001 to 2008 and by video monitoring 2000 to 2002. Sex-specific variation in responses to exte...
The present study was conduct to examine different dietary levels of iron (FeSo4) on some haematological parameters of Ship sturgeon, Acipenser nudiventris including red blood cells (RBC), white blood cells (WBCs), differential WBCs, hematocrit (Hct), Hemoglobin (Hb), the mean corpuscular hemoglobin (MCH) and the mean corpuscular hemoglobin concentration (MCHC), the mean corpuscular volume (MCV...
Sturgeons are the most important fish in the Caspian Sea, but there are only a few reports on their parasite communities in the southern part of this sea. In this study, a total of 93 individuals of four sturgeon species, namely Acipenser stellatus (n= 60), A.gueldenstaedtii (n = 12), A. nudiventris (n = 9) and Huso huso (n = 12), were caught in 2 geographical regions from the southwest of t...
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