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یافته علمی کوتاه: ارزیابی اثر تراکم بر پارامترهای کیفی آب در پرورش فیل ماهی(Huso huso) | ||
| مجله علمی شیلات ایران | ||
| مقاله 16، دوره 20، شماره 1، شهریور 1390، صفحه 165-170 اصل مقاله (724.78 K) | ||
| شناسه دیجیتال (DOI): 10.22092/isfj.2017.109985 | ||
| نویسندگان | ||
| سعیده رفعت نژاد؛ بهرام فلاحتکار* | ||
| کلیدواژه‌ها | ||
| تراکم؛ کیفیت آب؛ رشد؛ ماهی خاویاری | ||
| عنوان مقاله [English] | ||
| Evaluation of stocking density on water quality parameters in rearing of Beluga (Huso huso) | ||
| نویسندگان [English] | ||
| S. Rafatnezhad؛ B. Falahatkar | ||
| چکیده [English] | ||
| The potential effects of stocking densities (1, 2, 4, 6 and 8kg/m-2) of Beluga (Huso huso) was investigated on water quality and growth factors of the fish. Feed was offered three times daily using a commercial diet to the juvenile fish at the average initial weight of 93.13±1.04g (±SE) for a period of 8 weeks. The final biomass was 4.0, 6.5, 11.0, 14.5, 17.1kg/m-2 from the lowest to the highest densities, respectively. At the termination of the experiment, the mean weight reached 362.4±6.9, 319.7±2.1, 267±9.2, 242.1±6.2 and 211.1±4.1 in densities of 1 to 8kg/m-2, respectively. Results of the present study showed that growth parameters, including: Final weight (W), body weight daily (BWD), weight gain (WG), condition factor (CF) and feed efficiency (FE) had significant differences among the treatments (P0.05). Results showed that stocking densities have major effects on water quality and growth indices of Beluga juveniles. | ||
| کلیدواژه‌ها [English] | ||
| Density, Water quality, Growth, Sturgeon | ||
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آمار تعداد مشاهده مقاله: 321 تعداد دریافت فایل اصل مقاله: 209 |
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