نتایج جستجو برای: واژههای کلیدی astacus leptodactylus
تعداد نتایج: 43490 فیلتر نتایج به سال:
The aim of this study was to screen potential probiotic bacteria against Aeromonas hydrophila and determine the effects of antagonistic bacteria and a commercial product containing lactic acid bacteria on the survival and growth of stage II Astacus leptodactylus juveniles. For this purpose, a total of 110 bacterial strains were isolated from adult, stage II crayfish juveniles and rearing water ...
The genetic variation and population structure of narrow-clawed crayfish (Astacus leptodactylus) was examined by means of polymerase chain reaction (PCR) restriction fragment length polymorphism (RFLP) analysis of the cytochrome oxidase subunit I (COI) of mitochondrial DNA. A total of 194 adult specimens were collected from seven sample sites including, two in the south Caspian Sea and one each...
چکیده یک آزمایش تغذیه‌ای به‌مدت 8 هفته برای تعیین اثر پروبیوتیک و پری‌بیوتیک و حدود سطح مطلوب آن در جیره غذایی شاه‌میگوی آب شیرین (Astacus leptodactylus) انجام شد. این آزمایش با 2 تیمار حاوی یک نوع پروبیوتیک تجاری تحت عنوان پروتکسین در سطح‌های 1 و 3 گرم درکیلوگرم غذا و 2 تیمار پری‌بیوتیکی با نام تجاری ایمونوژن در سطح‌های 2 و 4 گرم در کیلوگرم غذا و یک تیمار شاهد بدون پروبیوتیک و پری‌بیوتیک در 3...
Freshwater crayfish (Astacus leptodactylus) is an important economic fisheries resource of Aras reservoir, Iran. The infection of freshwater crayfish by gram negative and gram positive bacteria are common in natural and cultural environments. These bacteria are considered as secondary disease agents or opportunities. This study was conducted to investigate infes...
The experiment was conducted to investigate the effects of artemia enriched with lipid emulsions containing highly unsaturated fatty acids on growth and survival of juvenile freshwater crayfish Astacus leptodactylus. Juvenile crayfish were fed artemia enriched with commercial emulsions (red pepper and olio ω3) and un-enriched artemia (control). The highest eicosapentaenoic acid (EPA) level was ...
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