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اثر سطوح مختلف نیاسین در جیره بر بافت شناسی کبد، روده و فعالیت برخی آنزیم های کبدی ماهی کپور معمولی (Cyprinus carpio | ||
| شیلات | ||
| مقاله 11، دوره 69، شماره 2، شهریور 1395، صفحه 253-263 اصل مقاله (1.12 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/jfisheries.2016.59855 | ||
| نویسندگان | ||
| خیری محمدی11؛ حمید محمدی آذرم2*2؛ امیر پرویز سلاطی22؛ ابراهیم رجب زاده قطرمی22 | ||
| 11. کارشناسی ارشد رشته تکثیر و پرورش، گروه شیلات، دانشکده منابع طبیعی دریا، دانشگاه علوم فنون دریایی خرمشهر، خرمشهر، ایران | ||
| 22. استادیار گروه شیلات، دانشکده منابع طبیعی دریا، دانشگاه علوم فنون دریایی خرمشهر، خرمشهر، ایران | ||
| چکیده | ||
| در مطالعه حاضر تغذیه با سطوح مختلف نیاسین به منظور بررسی اثرات آن بر بافت شناسی کبد، روده و فعالیت برخی آنزیم های کبدی سرم ماهی کپور معمولی انجام گرفت. جیره گروه شاهد (جیره تجاری حاوی 30 میلی گرم نیاسین در کیلوگرم ) و 4 جیره آزمایشی اسپری شده توسط مقادیر مختلف نیاسین شامل 50، 70، 90، 110میلی گرم در کیلوگرم غذا آماده شد. برای این منظور ماهیان با میانگین وزن اولیه 35 گرم در 15 تانک 300 لیتری به تعداد 12 عدد در هر تانک به مقدار 3 بار در روز در حد سیری به مدت 50 روز تغذیه شدند. نتایج نشان داد با افزایش سطح نیاسین میزان فعالیت آنزیم های کبدی شامل آلانین آمینو ترانسفراز و آسپارتات آمینو ترانسفراز دارای کاهشی بدون اختلاف معنی دار بوده است (05/ 0P>). همچنین با افزایش سطوح نیاسین به طور معنی داری طول پرز روده افزایش یافت (05/ 0P<) که بیشترین مقدار آن 93/40 ±10/1208 میکرومتر در تیمار 90 میلی گرم نیاسین در کیلوگرم غذا در مقایسه با گروه شاهد42/34 ± 98/308 میکرومتر بود. از طرفی ضخامت پرز روده نیز به طور معنی داری کاهش یافت (05/ 0P<) که کمترین مقدار آن 05/1±49/49 میکرومتر در تیمار 90 میلی گرم نیاسین در کیلوگرم غذا در مقایسه با گروه شاهد 79/2±27/111 میکرومتر بود. بر اساس مطالعات مشاهده ای، مقدار واکوئل های چربی در روده و کبد با استفاده از سطوح مختلف نیاسین کاهش یافت و سلول های کبدی دارای ساختار نرمال بودند. لذا با توجه به نتایج استفاده از نیاسین به مقدار 90 میلی گرم در کیلوگرم غذا برای ماهی جوان کپور معمولی توصیه می شود. | ||
| کلیدواژه‌ها | ||
| نیاسین؛ بافت شناسی؛ کبد؛ آنزیم؛ انتروسیت؛ کپور معمولی | ||
| عنوان مقاله [English] | ||
| Effect of Different Levels of Dietary Niacin on the Gut and Liver Histology and Some Liver Enzymes Activity of Juveniles Common Carp (Cyprinus carpio) | ||
| نویسندگان [English] | ||
| Kheyri Mohammadi11؛ Hamid Mohammadiazarm2*2؛ Amirparviz Salati22؛ Ebrahim Rajabzadeh22 | ||
| 11. Department of Fisheries, Faculty of Marine Natural Resources, Khorramshar University of Marine Science and Technology, Khorramshar, Khouzestan, Iran | ||
| 22. Assistant Professor, Department of Fisheries, Faculty of Marine Natural Resources, Khorramshar University of Marine Science and Technology, Khorramshar, Khouzestan, Iran | ||
| چکیده [English] | ||
| This experiment was conducted to examine effects of different levels of niacin on the gut and liver histology and also some activity of the liver enzymes in the blood serum of Common carp. A control diet (containing 30 mg niacin kg-1 commercial diet) and four other diets were prepared which had 50, 70, 90 and 110 mg niacin per kg of commercial diet, added by spraying. Fish with initial average weight of 35 g were allocated to 15 circular 300-L tanks at a density of 12 fish per tank and fed the experimental diets to satiation three times a day for 50 days. The result showed that, the activity of the liver enzymes containing alanine aminotransferase and aspartate aminotransferase decreased with increase of niacin but it was not significantly different (P > 0.05). Also, the increase of niacin induced a significant increase (P < 0.05) in epithelial length of intestine, with the highest value was found in the treatment 90 mg niacin kg-1 diet (1280.10 ± 40.93 micrometer), compared with that of the control (308.98 ± 32.42 micrometer). On the other hand, epithelial thickness of intestine decreased significantly (P < 0.05), that the lowest value was in treatment of 90 mg niacin kg-1 diet (49.49 ± 1.05 micrometer), compared with that of the control (111.27 ± 2.79 micrometer). Based on this study, lipid vacuole decreased in anterior intestine and liver by different levels of niacin. According to these results, addition of 90 mg niacin kg-1 diet is recommended for juveniles of Common carp. | ||
| کلیدواژه‌ها [English] | ||
| Niacin, Histology, liver, enzyme, Enterocyte, common carp | ||
| مراجع | ||
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