ISSUE FOCUS 30 FEED & ADDITIVE MAGAZINE September 2022 The industry that produces food with the quickest rate of growth is aquaculture. To increase production, intensive techniques including high stocking densities, artificial feeding and fertilization have become common. The industry is facing a variety of difficulties as a result of intensification. The difficulty in achieving larger yields is mostly due to the prevalence of illness in farming systems. To stop a disease epidemic, control and prevention are the most crucial considerations. A potential immunostimulant, β-glucan aids in the control of infections, provides immunity to infectious illnesses, and stimulates immune responses in culture systems. HISTORY The human immune system was originally demonstrated to be stimulated by zymosan, an unrefined yeast cell wall extract, in the 1940s. Due to negative side effects, zymosan's use was discontinued. Upon the discovery of beta-glucan as the active component of zymosan, twenty years later, study and usage of the substance got underway. STRUCTURE & SOURCE Beta-glucans are linear, unbranched homopolysaccharides that are found in nature and have just glucose as their structural constituents. These structural components are connected by glycosidic linkages. The most prevalent Beta-glucans are formed from the cell walls of baker's yeast Saccharomyces cerevisiae and Echinaceae members and are comARE IMMUNE RESPONSES ELICITED BY BETA-GLUCAN IN FISHES? “When administered orally, intramuscularly, or added to the feed, beta-glucans have the enormous potential to boost fish growth and survival rates, while supplying disease resistance and defense against infectious diseases. The receptor present inside the animal’s body recognizes and binds to the β–glucan, which in turn renders the animal with high resistance and enhanced immune response.” Malreddy Joshna Research Scholar, PhD Dr. M.G.R Fisheries College & Research Institute, TNJFU Raahavishree Thanigaivel UG Graduate, III Year B.F.Sc Dr. M.G.R Fisheries College & Research Institute, TNJFU
RkJQdWJsaXNoZXIy MTUxNjkxNQ==