نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکتری، گروه شیلات، دانشکده منابع طبیعی، دانشگاه آزاد اسلامی واحد بندرعباس، بندرعباس، ایران.
2 استادیار گروه شیلات، دانشکده منابع طبیعی، دانشگاه آزاد اسلامی واحد بندرعباس، هرمزگان، بندرعباس، ایران.
3 استاد گروه شیلات، دانشکده منابع طبیعی، دانشگاه گیلان، صومعه سرا، ایران.
4 دانشیار موسسه تحقیقات بین المللی تاسماهیان دریای خزر، سازمان تحقیقات، ترویج و آموزش کشاورزی، رشت، ایران.
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The long-term (6-month) effects of fish oil (Kilka fish) in the diet with vegetable oil (rapeseed oil) were evaluated on the growth performance of Sterlet sturgeon (Acipenser ruthenus). Three diets containing fish oil (FO), vegetable oil (VO), and an equal proportion of both fish oil and vegetable oil (FO+VO) were formulated. The fish fed by the FO+VO diet had a higher weight gain in comparison with the other treatments, while fish treated with VO displayed the lowest weight (P<0.05). Condition factor indices, average daily growth and increased body weight rates indicated a significant impact in fishes treated by FO+VO diet compared to the fishes fed by VO (P<0.05). Assessment of non-specific immune function showed that the number of white blood cells had not affected by FO and VO. The results indicated that using a combination of VO and FO sources can considerably provide necessary lipid for Sterlet sturgeon. This study confirms the importance of nutritional programming in sturgeon to improve growth performance and preserve the health status.
کلیدواژهها [English]