نوع مقاله: مقاله پژوهشی
نویسندگان
1 گروه شیلات، دانشکده علوم کشاورزی و منابع طبیعی، دانشگاه گنبد کاووس، ایران
2 باشگاه پژوهشگران جوان و نخبگان، واحد اصفهان (خوراسگان)، دانشگاه آزاد اسلامی، اصفهان، ایران
3 گروه تولید و بهره برداری آبزیان، دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
4 گروه تکثیر و پرورش آبزیان، دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
The present study aimed to investigate the different levels of Galacto oligosaccharide prebiotic on growth performance and intestinal morphology of Carassius auratus gibelio. A number of 240 baby fish with the mean weight of 4.88 ±0.28 g were divided into four groups. The first group as the control was fed with basic diet (having no Galacto oligosaccharide) while the second, third, and fourth groups were fed with the diets containing 0, 0.5, 1 and 2 % Galacto oligosaccharide for six weeks. At the end of the test, the growth markers were calculated (including final weight, specific growth rate, and food conversion ratio). Then, intestinal biopsy was conducted and the mean length, width, and absorption surface of intestinal villus were measured in each treatment. The results indicated a significant effect of treatment with 2% Galacto oligosaccharide on villus length, width and absorption surface in Carassius auratus gibelio (P<0.05). However, no significant difference was found between treatments in terms of growth parameters. Due to the significant effect of Galactooligosaccharide prebiotic on the increase of absorption surface in Carassius auratus gibelio as well as the relative increase of growth parameters int he fish fed with Galacto oligosaccharide than the control treatment, it seems that this substance can be used as a suitable stimulating factor of growth and feeding in the diets of red ornamental fish.
کلیدواژه‌ها [English]
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