نتایج جستجو برای: kutum rutilus frisii kutum
تعداد نتایج: 1065 فیلتر نتایج به سال:
In the present study effects of different levels of probiotic Pediococcus acidilactici, on growth performance and survival rate of Rutilus kutum fingerlings were investigated. Kutum fingerlings with a mean weight of 1±0.235 g were reared for 8 weeks in 500-l fiberglass tanks (15 fish per tank) with 4 diet treatments (3 replicates for each). Treatments included 1×109, 2:1×109, 3×109 CFU kg-1 dry...
The study was conducted with a completely randomized design consisting of four treatments in triplicates. Experimental diets were formulated to contain four different lipid levels (8, 10, 12 and 14%) at constant protein level (46.8%) and different gross energy of 4314, 4417, 4519 and 4622kcal/kg, respectively. Kutum fry (average weight, 203±4mg) were randomly assigned and distributed at a densi...
در این مطالعه، تأثیر نایسین Z (02/0 درصد ) و بنزوات سدیم (5/1 و 5/2 درصد) بر روی فیلهی ماهی سفید (Rutilus frisii kutum) در دمای 4 درجهی سانتیگراد مورد بررسی قرار گرفت. پارامترهای مورد بررسی در طول زمان نگه داری شامل فاکتورهای میکروبی (باکتریهای مزوفیل، سرماگرا و لاکتیک) و شیمیایی (عدد پراکسید و مجموع ازت فرار) بوده که در زمانهای صفر، 4، 8، 12 و 16 روز مورد ارزیابی قرار گرفتند. نتایج، نشان...
The present study examines the developmental stages of the eye retina in Caspian kutum during the pre-hatch stage to end of the larval stage. Fertilized eggs of Caspian kutum were obtained from Shahid Ansari Center for Reproduction of teleost fish (Guilan province, Iran). Sampling was done for one month until the larval stage completed and the yolk sac completely depleted. Samples were studied ...
The study was conducted with a completely randomized design consisting of four treatments in triplicates. Experimental diets were formulated to contain four different lipid levels (8, 10, 12 and 14%) at constant protein level (46.8%) and different gross energy of 4314, 4417, 4519 and 4622kcal/kg, respectively. Kutum fry (average weight, 203±4mg) were randomly assigned and distributed at a densi...
Six different diets including two rainbow trout starters, Gammarus dry powder, shrimp dry powder, egg yolk dry powder and newly hatched Artemia were used in feeding of Caspian Kutum larvae. During a 4-week trial, larvae with a mean weight of 17.5 ± 4.7 mg were fed with three replicates and growth parameters were measured at the end of the experiment. Thirty fish in each experimental unit with...
A sex steroid-binding protein (SBP) that binds to 17 b-estradiol with high affinity and moderate capacity was identified in the plasma of female and juvenile of kutum (Rutilus frisii kutum) sampled during the early stage of gonadal maturation in October and prior to spawning in March. Mean maximum specific binding (Bmax) and equilibrium dissociation constant (Kd) of the fish were as follows: In...
Salted Kutum roe was prepared by soaking in brine to a traditional procedure. Proximate composition (moisture, protein, lipid, pH, ash and salt content), total volatile basic nitrogen (TVB-N), fatty acid profiles and microbiological characteristics of raw and salted roe of Caspian white fish (Rutilus frisii kutum) were determined. The results indicated that protein and moisture contents were si...
رابطه فیلوژنی دو زیر گونه مهم و اقتصادی از جنس Rutilus متعلق به خانواده کپورماهیان شامل ماهی کلمه (Rutilus rutilus caspicus) و ماهی سفید (Rutilus frisii kutum) سواحل جنوبی دریای خزر بهمنظور وجود رابطه خواهری با بخشی از ژن سیتوکروم b میتوکندریایی و روش توالی یابی DNA مورد بررسی قرار گرفت. روش کار شامل نمونهبرداری از باله دمی، استخراج DNA، PCR و توالییابی بود. جهت تجزیه و تحلیل، از تعدادی از ...
چکیده جهت تعیین مناسبترین محلول تثبیتکننده برای تخمکهای ماهی سفید (frisii kutumRutilus)، کپور دریایی و کپور پرورشی (Cyprinus carpio) از 12 محلول تثبیتکننده شامل محلولهای گیلسون، بوئن، فرمالین بافر 5/0 تا 10 درصد، فرمالین غیر بافر 1/0 تا 1 درصد با سدیم کلراید 7/0 درصد و فرمالین غیر بافر 1/0 تا 1 درصد با 9/0 درصد سدیم کلراید استفاده شد. قطر ت...
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