Hatch India Presentation on “Microbial Management in Shrimp Hatcheries through Alternate approaches”
All India Shrimp Hatcheries Association (AISHA) organised Hatch India 2023 conference on 29 and 30 September 2023 at Visakhapatnam, Andhra Pradesh with the objective of initiating a dialogue between broodstock suppliers and hatcheries. Dr.D.Ramesh Kumar, CEO of Salem Microbes made a presentation on “Microbial Management in Shrimp Hatcheries through Alternate approaches” in the 2nd day session on “Disease Management” of HATCH INDIA 2023. In his presentation, he gave an overview on microbiota of normal and diseased Shrimps in Hatchery conditions. He explained the relationship between infective microbial community on the Shrimp brood-stock and PL produced and the importance of genomic studies to understand this.
He gave 3 Stage treatment strategy when you want to achieve a Disease-free state in a hatchery. His recommendations are (1) Probiotics for Water quality management ,(2)Bacteriophages for controlling pathogenic Vibrio’s and (3) A New proprietary approach called SIM MICROBIOTA, where he gave more emphasis on the Shrimp intestinal pathogen management (SIM).
He highlighted the following points,
(1)He said that, by using a General Probiotics, we still get many problems as Poor conversion, Zoea 2 syndrome leading to less production.
(2) He showed the difference between Before and after use of Vibrio killing Bacteriophages in different sections of a Hatchery and how it will positively influence the final production.
(3) In SIM MICROBIOTA PROGRAM, the emphasis was on the management of Intestinal pathogens of the Brood stock first and then the PLs produced from those broodstock. He explained that, when you continuously maintain a Healthy gut in the Broodstock, it has a remarkable effect on the PLs as lot of pathogenic Bacteria get inside the PLs even though we practice egg washing and other sanitary procedures.
(4) He said that the primary cause of incidence of White gut, White fecal, Running mortality which is widely reported in farms since last 2 years has a common origin of the presence of various pathogenic Vibrio species apart from EHP, where Vibriosis can be controlled by this SIM PROGRAM.
He finally advised Hatcheries to equally care for Preventive and treatment aspect through Good Microbiota Management for a successful Hatchery cycle.
During the panel discussion session, he explained the benefit of using Liquid Bacteriophages which is more appropriate and effective in aquaculture applications. He also added that the Liquid bacteriophages are quick acting, does not cause turbidity and solubility problem and can be equally effective as Water and feed supplement.