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Common Fish Diseases in Ponds and Their Prevention: Viral Diseases and Their Prevention
Common Fish Diseases in Ponds and Their Prevention: Viral Diseases and Their Prevention
Common fish diseases can generally be categorized into viral diseases, bacterial diseases, fungal diseases, and parasitic diseases. Diagnosis and treatment of fish diseases should strictly follow medical advice, adhering closely to prescribed medication dosages without arbitrary increases or decreases.
Common viral diseases include hemorrhagic disease of grass carp, hematopoietic organ necrosis disease of crucian carp, herpesviral dermatitis of carp, spring viremia of carp, infectious pancreatic necrosis, infectious hematopoietic tissue necrosis, and viral hemorrhagic septicemia.
Main Pollutants in Aquaculture Water and Their Effects on Aquatic Animals
For aquaculture, managing pollutants in rearing ponds is a critical concern. Common pollutants in aquaculture water include nitrogenous substances and phosphorus compounds. Nitrogenous substances encompass ammonia nitrogen, nitrite nitrogen, nitrate nitrogen, dissolved organic nitrogen, among others. Phosphorus compounds include reactive phosphates and organic phosphorus. This article explores the primary pollutants in aquaculture water and their impacts on aquatic animals. Let's first look at a simplified diagram for easier memorization and understanding.
Challenges in Achieving Optimal Hygiene During Transport
Why is achieving efficient transport biosecurity so complex? In this article, we will outline various challenges that need to be overcome to achieve higher biosecurity in transport vehicles for pigs.
Analysis of the Cause of Acute Death in a Sow
Clinically, the most common diseases that can cause acute death in sows include African swine fever, classical swine fever, severe gastric ulcers (perforation), acute bacterial septicemia (such as B-type Clostridium novyi, erysipelas), and exceeding the limit of mold toxins in feed. Additionally, urinary tract infections in sows caused by Streptococcus suis can also lead to acute death.