Which water is best for vannamei farming?

Hello everyone:

In this topic, we will see the small overview about which water is best for vannamei culture.
All are know , P.vannamei is highly cultured species in India due to its adoptability to various salinity of water. Yes, it adopt to various salinity and have good survival in high stocking densities. Good international market value. SPF seeds also available. So everyone likes to culture vannamei.

Seawater:
P.vannamei is cultured from varied salinity (0-35ppt).
Seawater is mainly composed of various ions like chloride, sodium, Magnesium, potassium, calcium.
These are the important ions which is required for the proper shrimp growth and development.

These ions very essential for osmoregulatory functions. In early stages of shrimp (post larvae) it must present in high saline water. Above PL 10 is best for altering salinity for adoptations. 

Seawater has the ability to prevent and control the solubility of gases such as carbon dioxide and other toxic gases. It also controls oxygen so aeration must present in proper manner at seawater culture. So there is less chance for decreasing pH in Seawater. It also have good alkalinity, so it have good buffering action against acidic pH. During culture, seawater does not requires high minerals, but freshwater or low saline water must requires high minerals throughout the culture.if we use borewater or Creek water, We must analyse the proper minerals composition present in that water. We must check hardnes, alkalinity, pH, presence of ionic compositions in the bore water. It may various between region to region.

In some researches told, low amount of ammonia and nitrite accumulation is found in Seawater compared to freshwater. In Seawater there is less chance for bloom compared to freshwater. But proper aeration required throughout the culture in Seawater under high stocking densities. High saline water is best for the vannamei farming. You must treat the water before use. Because it may contains various toxins or toxin producing algaes, parasites, insects. Sometimes alkalinity also less in freshwater compared to Seawater. If nitrification process occurs means, the alkalinity of the water gradually reduces to buffer the acidic pH. 

Main difficulties in shrimp farming is operational cost. Feed is a major operational cost. Aeration, current is another one. Minerals, probiotics is another one.. if we find low cost ,high efficiency feed , then shrimp farming is easily started in low investment. Do your research to make this possible. Thank you 😊.

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