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Showing posts from June, 2023

Copper and shrimp - Facts.

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Hello everyone:       Today we will see about some of the interesting things about the relationship between copper and vannamei.  Is copper good or bad?        Copper is a important trace mineral which is required by crustaceans for their function especially in hormone and enzymes synthesis. When the copper is exposed to excess level then it cause severe problem to shrimp then leads to death.  Respiration :       Copper is a important carrier in oxygen transport in crustaceans because haemocyanin contain copper as a transport medium.  Enzymes :       Some of the copper dependent enzymes are found in the body of crustaceans. But how to predict the required level of copper? Yes, it is depends on various intrinsic and extrinsic factors.  Molting and reproduction:       It is proven that certain amount of copper supplements induces molting in  shrimp. It also induces gonadal development and maturation.        Several hemolymph proteins also contributes to the new shell formatio

How stress leads to disease in aquatic animals..

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Hello everyone:       Today we will see about an interesting topic.. How stress leads to disease in aquatic organisms.  Let's go......       Culture of aquatic organism is an interesting task, we have to manage water quality, manage animal health, feeding, growth and everything.       But stress is a factor where we can't avoid in certain situations during our culture.    Breeding to Harvest...  Animal can get stress in different phases throughout the culture.  For example: Acclimatization is an important step to be handled with care to avoid osmotic shock to the organism.  How stress leads to disease:     Stress can occurs in organism by different factors like Physical, chemical or biological factors.  Ex: Handling during sampling ( physical and also stress caused by environment).  Animals attain certain stages after stress: 1. Sudden or alarming reaction.  2. Stage of resistance to certain stress.  3. Stage of exhaustion.  If any stress occurs for an animal, then