Technical officer Mr.Aravinth shared his insights on managing farms in the summer particularly during high temperature times-Do read.

Dear all, 

Hope you all are doing well! Today we are going to discuss about the summer impacts on animal behaviour and water quality in shrimp farming. 

Read others also...

1. Importance of azolla in aquaculture

2. Biosecurity in shrimp farm

3. Role of bacteria in aquatic environment

For publication requests, Kindly fill the form in link: Publication request form

This topic is authored by Mr. Aravinth who is working as a Technical officer. He shared his insights and experience on water quality and it's impact during summer.

Unfortunately, now most of the regions having extreme temperature waves. 

         Warmer climates can directly or indirectly affect the culture system .

    Shrimps are Poikilothermic ( Change their body temperature according to surrounding temperature)

Impacts on Animal behaviour:

         *  High temperature increases the metabolism of animal(biological activity are doubled for every 10°C increase in temperature). Animal will spent more amount of energy to maintain there metabolism not for growth.

        * High temperature increases the DO consumption..

        * Aquatic animal can tolerate gradual increase in temperature(0.2°C/min).Sudden temperature rise will create thermalshock to animal( Rapid change doesn't exceed more than 0.5°C/min)

        *Thermal stress will affect the osmoregulation process of the aquatic animal.

        * Increases the feed consumption.But low absorption and digestibility

Impacts on water quality 

           * Decreases the solubility of oxygen, hot water can't hold more amount of Oxygen. In High temperature Biological oxygen demand will be high that also cause low DO..

          * High temperature will increase the toxicity of ammonia.

         * If the temperature increase then it increases the photosynthesis process. pH will fluctuate if more amount planktons are in the water column.

         * Increasing temperature also increases the biological and chemical reactions in the water column.

         * High temperature and High ph creates favour condition for vibrio and BGA.

        * If feed consumption is more , waste will be more..if waste is more it will leads to form  some toxic gases like ammonia, Nitrite, Hydrogen sulphide.....

  Precautions :

       * If you want to stock the seed in summer time / Any Weather condition,    Please acclimatize the seeds to pond water temperature and ph .Then ,realese the seeds into pond water.( 15 mins for 1°C temperature change).

      * Run the aerators to avoid thermal stratification.

     * Control the feeding to avoid more amount of organic load( reduce the afternoon meal and compensate this reduction in morning and evening meal). Don't go for over feeding.

      * To avoid organic load accumulation remove the sludge at regular intervals.

      * Stock the seeds at early morning to avoid thermal shock.

      * Use probiotics for biodegradation process .

      * Don't add bore Water in the afternoon time.

     * Maintain transparency above 35 cm..

     * Maintain optimum Water depth because shallow water easily get temperature fluctuations..

   * To compensate the evaporation loss add new water to the Water column..

Kindly share and subscribe.. 

Pls refer other blogs also..

1.Temperature & Metabolism in shrimp

2.Minerals & Moulting in shrimp

Ammonia & Nitrite in aquaculture ponds

Thank you!!! 

For publication requests, Kindly fill the form in link: Publication request form

Credits to:

A. Aravinth,

Technical officer.