Abstract
Simple SummaryGlobal demand for macroalgal and microalgal foods is growing, and algae are increasingly being consumed for functional benefits beyond the traditional considerations of nutrition and health. The study was undertaken to know the effect of methanolic extract of Chaetomorpha antennina in fish. The results demonstrated that the betterment of growth, immune system, and resistance to disease against Edwardsiella tarda in Indian major carp, rohu, and Labeo rohita. These findings are useful for development of new feed additive in aquaculture sectors. The current study focused on assessing the outcome of methanol extract of Chaetomorpha antennina (MECA) on the growth performance and immune modulation in both specific and non-specific immune responses through the assessment of neutrophil, serum lysozyme, serum myeloperoxidase, antiprotease, ceruloplasmin, reactive oxygen species (ROS), and reactive nitrogen species (RNS) activity in Labeo rohita (rohu) at 28 days post treatment along with assessment of the disease resistance capacity against Edwardsiella tarda at 30days post immunization. Fishes (n = 144; average weight 50.0 ± 0.23 g) were evenly divided into four treatments, with 12 fishes per tank in triplicates. The MECA was injected intraperitoneally in the fishes at different doses as 0, 25, 75, and 150 mg/kg of the body weight. The results demonstrated that fish treated with MECA have an increased body weight, specific growth rate, and feed conversion ratio (p < 0.05) with respect to the control group. Results suggested that the MECA inclusion can significantly enhance (p < 0.05) the levels of serum lysozyme, neutrophil function, serum antiprotease activity, cellular RNS, and ROS production. Exposure to MECA of 75 mg/kg showed a significantly higher survival percentage against E. tarda disease infection. These results indicate MECA as a stimulant of immunity in L. rohita against E. tarda. The results suggested that MECA is a potent immunostimulant in finfish aquaculture and can offer higher economic welfare.
Highlights
The aquaculture sector is sparkling over the years due to strongly integrating with developing food safety, dietetic desires of the world populace, and providing employment as a spawn for foreign trade.Transversely, diversification and intensification practices in aquaculture instigation havebeen elevated with the raise of transmittable disease indices
The maximum weight gain was observed in the T2-treated group, which wastreated with 75 mg/kg when compared with thecontrol (Table 1)
The fishes were treated with methanol extract of Chaetomorpha antennina (MECA) at different levels with significantly (p < 0.05) different values between the specific and non-specific immune responses for the
Summary
The aquaculture sector is sparkling over the years due to strongly integrating with developing food safety, dietetic desires of the world populace, and providing employment as a spawn for foreign trade.Transversely, diversification and intensification practices in aquaculture instigation havebeen elevated with the raise of transmittable disease indices. Recent researchers havemainly focused on developing resistance mechanisms in fishes against several microbial attacks using natural components as it is a prerequisite to identify the mechanism behind fish disease due to developing fiscal significance in aquaculture [1]. One of the most common bacterial diseases in fish aquaculture is Edwardsiellosis caused by Edwardsiella tarda. A wide range of freshwater and marine fish are infected by this pathogen apart from a variety of different animals, including reptiles, amphibians, birds, and humans [2,3]. Marine algae is a rich source of potentially bioactive components with positive effects in improving one’s health by developing the body’s natural disease resistance capability [8].
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
