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Showing posts from November, 2022

How to manage water quality in shrimp farming during winter and rainy season.

Hello everyone:            Coming Sunday ( 27-11-2022) , I am going to conduct online class about water quality management in shrimp farming during winter and rainy season.       It will be a in depth class with discussions. ( detailed technical class).  I request everyone who are interested, pls join and share.  TOPIC                  : Water quality management in shrimp farming during winter and rainy season.  Registration fee : 50 rs per member.  Date                      : 27-11-2022   Time                      : 6-7 pm .  Payment number : 9384346193. ( Phone pay/ Gpay/ Paytm).  Queries        :dhivagarfcri2000@gmail.com Platform     : Microsoft Team.  Meeting link :     https://teams.live.com/meet/9565448184514 Last Date : Saturday ( 26-11-2022). Pls install Microsoft team app from playstore for joining.  Kindly join and share the meeting link to the interested people.  Make a registration through WhatsApp and confirm your presence.  For more details pls contact through mail or W

Best Natural feed supplement for Penaeus vannamei.

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Hello everyone:          Today we will see about the best natural feed supplement for vannamei . In last blog we saw about sulphate polysaccharides.            Now we will see about the supplement which naturally have antiviral activity.  Spirulina:         We all know about spirulina. It is a bluegreen algae. It is highly nutritious algae. It contains high level of protein ( 60-70 % ) then essential amino acids, minerals, polyunsaturated fatty acids and antioxidative pigments etc..   # Due to the absence of cellulose cell wall, it can be easily digested and assimilated by organism.  Presence of antimicrobial and antiviral activity:           Due to presence of sulphate polysaccharides, it has high antiviral activity.            When it is supplemented in feed then these essential substance can be easily available in organic form to the organism.          Detoxification :             It has another important property of removing toxic metals present in the body and surround

How sulfate polysaccharides prevents the replication of virus.

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Hello everyone:         Today we will see about some of the interesting facts about viral infection and action of sulfate polysaccharides.  Sulfate polysaccharides:       Mostly it is derived from marine algae, seaweeds etc. These marine derived polysaccharides have the ability to inhibit the replication of virus inside the host cells.  First of all.. We want to know about the life cycle of virus.  How virus attacks the host cell?                  Attachment to the host cell                          Penetration into the host cell       Releasing virions ( uncoating)          Biosynthesis ( replication)      These are the various stages of virus infection in host. Sulfate polysaccharides have the ability to inhibits virus multiplication in different life stages.  During attachment:          The enveloped virus have positive charges around the cell. The host cells are negatively charged . So these interactions will make  easier attachment for virus. When, sulfate polysacchar

Marine Red yeast in aquaculture.

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Hello everyone:           Today we will see about some of the interesting facts of marine   red yeast and it's uses in aquaculture.  Yeast for efficient farming.            There are various probiotics are used in shrimp farming. But the place for the role of yeast in unavoidable. Recent researchers identified the excellent performance of marine red yeast strain on aquaculture.  Efficient removal of ammonia:          It is identified from specific strain on marine red yeast ( Rhodosporidium sphaerospora  ),they are very effective on removing of ammonical nitrogen from the water . It is noted that it reduces huge amount of ammonical nitrogen within few hours.         Another advantage is  they are utilising the ammonia nitrogen as a food source and they didn't form any nitrite in the water during this assimilation process.   Inhibits the growth of vibrio:         This yeast strain shows high inhibitory effect on vibrio. It reduces vibrio population in water. It play