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Special topics on swine diseases：Red Dysentery

Pathogen

The causative agent is Clostridium perfringens type C, also known as Clostridium welchii type C. This is a Gram-positive, encapsulated, non-motile anaerobic bacillus with oval spores located centrally in the bacterial body. This bacterium can produce lethal toxins, mainly α and β toxins, which can cause enterotoxemia and necrotizing enteritis in piglets. After spore formation, the bacteria are highly resistant to external conditions.

Pathogen: PRRS is an RNA virus with two major strains: the American type and the European type. Susceptible Animals: Pigs are the only susceptible species. All breeds and ages of pigs can be infected, but pregnant sows and piglets under one month of age a...

Pathogen:Porcine circovirus (PCV) is the smallest known animal virus, classified into two serotypes: PCV1 and PCV2. PCV1 is non-pathogenic, while PCV2 is pathogenic and the primary causative agent of Post-weaning Multisystemic Wasting Syndrome (PMWS). Howeve...

OverviewSwine streptococcosis is a zoonotic disease caused by various pathogenic Streptococcus species in pigs. It leads to conditions such as meningitis, septicemia, endocarditis, arthritis, and pneumonia, primarily manifesting as fever and severe toxemia. ...

In aquaculture, there is a harmful bacterium that causes a lot of headaches for farmers, known as Vibrio. During the farming process of shrimp, Vibrio can lead to severe conditions such as early-stage hepatopancreatic necrosis, empty intestines and stomachs, and sudden mortality. Whether in small ponds or larger outdoor ponds, high feed volumes and deteriorating water quality make these environments highly susceptible to Vibrio infections.

Pathogen The pseudorabies virus (ADV or PRV) belongs to the Herpesviridae family, subfamily Alphaherpesvirinae, and is classified as Suid herpesvirus 1. It is a herpesvirus capable of causing fever, severe itching, and meningoencephalitis as its primar...

Porcine parvovirus (PPV) can cause reproductive disorders in pigs, characterized by infected sows, particularly first-time breeders, delivering mummified fetuses, stillborns, deformed fetuses, and weak piglets. Occasionally, abortion may also occur, while th...

Swine influenza is an acute, infectious respiratory disease in pigs caused by the swine influenza virus (SIV). It is characterized by sudden onset, coughing, difficulty breathing, fever, and rapid progression. Swine influenza is a respiratory disease in pigs...

In aquaculture, the condition of pond bottom sediment directly impacts water quality, which is often the first indicator of underlying sediment issues. Improving pond bottom quality is essential to maintaining water quality, as pathogens tend to thrive in...