Info about aquaculture. Spending time restless

Hello everyone:             Today we will see about the white spot formation in vannamei..  Reason for white spot formation in carapace of vannamei.          Sometimes,  we can observe the white spots present on the molted carapace shell . It's absolutely looks like the spot which occured by white spot syndrome virus. But there is significant difference present between these white spots.  # Possibilities of occuring.       1. It may be due to white spot virus . If it is white spot virus. Shrimp showing less feed intake, lethargic swimming, and mortality occurs heavily within 3-5 days. If these are not happens means, your shrimp have no white spot virus.....          2. Second possibility is the important one.. Most of the farmers using bore water for their culture. It have more alkalinity content. When you are culturing water goes more than 8.3 pH, then there is a less chance for mineral dissolution in water. It can't dissolved in water, it will deposit on the bott

Hello everyone:             Most of the farmers doing different feeding frequencies in their farm. Is it working? What are the advantages, disadvantages in changing feeding and feeding frequency for vannamei... We will see in detail.  Shrimp digestion:             Vannamei has short intestine and the digestion process also held fast. Most of the omnivore and carnivore species have short intestine compared to herbivore species. It also takes less than 3 hrs for digestion. The food materials passes via oesophagus and get into stomach (Foregut - Midgut - Hindgut).The digestion started in stomach and most of the nutrients absorbed into hepatopancreas and other regions.  Common thought :             Most of the farmers thought that the more frequency of feed increases the growth of the shrimp . But it is not fully true..  * Shrimp roam more in the night time comparing to daytime.  * The increasing the frequency of feed will increase the secretion of more enzymes for digestion an

Hello everyone:        Today we will see about the reason for the foam formation in aquaculture pond...         Many persons seeing in the early morning or evening time, when the aerators running, at that time more foam will forms on the water surface and spreads to the entire water column.  Reason:      1, If you applied any hydrophobic agents to the pond, then the foam will come for certain hours.      2, Sometimes plankton crash causes little amount of foam on the edges of the pond.       If you are not applied any agents but foam come means, then what is the reason?...        It may be due to the presence of dissolved organic nutrients in your pond . If you are using high protein feed or doing culture with high stocking density are the important reason and also due to improper management will leads to accumulation of organic load in the pond..        In this organic matters most of them are hydrophobic in nature . When the aerators creates oxygen that time they accumula