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Showing posts from October, 2022

Effects of sound on growth of organism.

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Hello everyone:            Today we will see about some of the interesting facts about sound.             Sound plays one of the important role in growth and activity of an organism.  Sound affects growth of bacteria:            There are different and different of bacteria species found around the earth. Most of them reacting to the sound waves. Sounds waves affects an organism by vibration.             1. The intracellular activity of an bacteria is changed.  2. The presence of ions such as calcium and potassium levels altered.            Some bacteria shows good growth and some shows poor growth.  It is recorded that bacteria makes quorum sensing. For this process, calcium ions are important to regulate the process.  The ATP ase activity, cellular activity are completely changed when expose to high sound. Is sound affects vannamei?         Yes, but it is not greatly influenced in the growth of the organism. The activity and behaviour shows some changes when exposed to hi

Gut microbiome of vannamei - Interesting facts.

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Hello everyone:         Today we will see about some of the interesting facts about gut microbiome of vannamei.  Aquaculture is an important growing sector. Penaeus vannamei is the commonly cultured species around the world. But farmers facing more challenges to achieve the profitable production.  Various outer factors leads to failure of crop..  1. Misunderstandings of farmers.  2. Unqualified technicians.  3. Getting Influenced by other people.  Gut microbiome:       It plays an important role in the growth and survival of the animal. The colonisation of microorganisms in the gut is limited. There will be an heavy competition occurs for exclusions .        Gut microbiome can impact the growth of the organism by modifying the gut enzymatic activity.        Host deterministic effect will reduce the bacterial colonies in the gut.        Another important fact is, gut microbiota is distinct from the rearing water.  Selection of probiotics:         The gut health is maintaine

Useless to Useful - Pond organic matter...

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Hello everyone:       Today we will see about some of the important thing about organic matter in your shrimp pond.  Question : Sir, my pond shows production of more foam in morning times. What can I do for this?    Answer : It is usual for earthern ponds when your DOC is crossed more than 50-60.Use activated probiotics. Don't use excess carbon source.         The foam formation is the common thing when t he organic matters present in your pond. We can't control completely because our daily feed will be more than 40 kgs per acre for low stocking. So definitely foam will come.  One solution......           We can turn these particulate into effective nutrient called floc . When the organic matter present in your pond, At the same time bacterial colonization will occur ( both beneficial and harmful bacteria).. In this time we have to increase the beneficial bacteria when you found excess organic matter in your pond...  Important criteria.          Beneficial bacteri

Interesting and Useful facts about vannamei - Molting and New moon relation.

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Hello everyone:           Today we will see about some useful and interesting tips about vannamei.  1. Nucleotide supplementation:           Supplementation of nucleotides with feed gives good results on immunity. The shrimp immune system get boosted. These nucleotides are used to form structures. The nucleotides extracted from yeast cells are widely used in culture . It mainly helps to increase the immune response of the host. It fulfill the demands of nucleotides in the host. If a shrimp affected by any bacteria or virus, at that time it takes minimal time for an better immune response.  2. Lymphoid organ of vannamei.             Lymphoid organ is an very important organ in vannamei. It majorly acting against foreign particles that enters into the body of the host. Bactericidal, phagocytosis are the major functions. Also functions against virus.             Shrimp forms various Spheroid cells with vacuolated structure. But these formed spheroid cells are eliminated fr

Supplier of Bioactive Compounds - Yeast.

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Hello everyone:          Today we will see about interesting facts about the use of yeast in shrimp farming.  Yeast:        Yeast is a unicellular. It has various qualities of usage in shrimp farming. Yeast produces various bioactive compounds which are helpful for digestion, absorption, development of immunity, growth etc..  Different uasge by farmers:         Nowadays, Farmers from Tamilnadu using yeast in different ways. Somebody using with probiotics, somebody using with prebiotics and probiotics..  Comparing to environmental use, yeast have good effect on shrimp when we using as a feed supplement.        # Compounds from yeasts such as glucans, mannan oligosaccharides, cell wall, nucleotides have good effect on shrimp.        It also producing the various digestive enzymes used for digestion such as amylase chitinase, phytase, protease etc...   Glucans from yeasts increasing the shrimp immunity by increasing the number of circulating hemocytes.  Yeast have any negative effects?