Results
Title

Rhodobacter sphaeroides Supplementation Enhances Growth Performance and Immunity in Rainbow Trout (Oncorhynchus mykiss).

Authors

Jeong, Seong-Mok; Khosravi, Sanaz; Cho, Min-Uk; Lee, Sang-Min

Abstract

Jeong, S.-M.; Khosravi, S.; Cho, M.-U., and Lee S.-M., 2023. Rhodobacter sphaeroides supplementation enhances growth performance and immunity in rainbow trout (Oncorhynchus mykiss). In: Lee, J.L.; Lee, H.; Min, B.I.; Chang, J.-I.; Cho, G.T.; Yoon, J.-S., and Lee, J. (eds.), Multidisciplinary Approaches to Coastal and Marine Management. Journal of Coastal Research, Special Issue No. 116, pp. 543-547. Charlotte (North Carolina), ISSN 0749-0208. Rhodobacter sphaeroides (RB), a purple non-sulfur bacteria, has high protein content and a large number of bioactive substances, such as carotenoids and CoQ10. To investigate its efficacy as a feed additive in aquaculture, we added graded levels of RB in rainbow trout feed and examined the changes in growth, whole-body biochemical composition, blood chemistry, and antioxidant gene expression. This study found that the weight gain and specific growth rate showed a significant response to the increasing dietary RB levels up to 1.5 % (quadratic, P < 0.05). Total bilirubin content decreased with the increasing level of RB in the diet (linear, P < 0.05). Thus, RB can be an effective additive for enhancing growth in the aquaculture of rainbow trout.

Subjects

CHARLOTTE (N.C.); RAINBOW trout; RHODOBACTER sphaeroides; FEED additives; COASTAL zone management; DIETARY supplements; WEIGHT gain; IMMUNITY

Publication

Journal of Coastal Research, 2023, Vol 116, p543

ISSN

0749-0208

Publication type

Academic Journal

DOI

10.2112/JCR-SI116-110.1