Effects of Kilka and Rapeseed Oils on Growth Performance of Sterlet Broodstock (Acipenser ruthenus)

Document Type : Research Paper

Authors

1 Ph.D. Student in Fisheries Department, Faculty of Natural Resources, Islamic Azad University of Bandar Abbas, Bandar Abbas, Iran.

2 Assistant Professor, Fisheries Department, Faculty of Natural Resources, Islamic Azad University of Bandar Abbas, Bandar Abbas, Iran.

3 Professor in Fisheries Department, Faculty of Natural Resources, University of Guilan, Sowmeh Sara, Guilan, Iran.

4 Associate Professor in International Sturgeon Research Institute, Agricultural Research Education and Extension Organization (AREEO), Rasht, Iran.

Abstract

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.

Keywords

Main Subjects

Journal of Fisheries
Volume 70, Issue 4
March 2018
Pages 407-415

Files

Share

How to cite

Statistics