What are the treatment methods for infectious coryza in chickens?

It is well known that infectious coryza is caused by Haemophilus paragallinarum, and the incubation period of natural infection for this disease is 1 to 3 days. It is clinically characterized by respiratory symptoms. Sick chickens are depressed, huddle with their heads drawn in and stand still; in the early stage, a thin nasal discharge flows from the nasal cavity, and in the middle and later stages it becomes thick and sticky, causing difficulty breathing, sneezing and frequent head shaking. Subsequently, one or both sides of the face become swollen, the conjunctiva becomes inflamed and tears flow; in severe cases the entire head swells, and some chickens develop corneal opacity and blindness.

Symptoms of infectious coryza in chickens

The flock shows a decrease in feed intake, and depressed chickens appear in a jumping pattern; most of the depressed chickens do not show facial or head swelling, a few have mucus flowing from the nasal cavity, and some have no mucus in the nasal cavity. The flock shows sneezing and passes emerald-green droppings. The treatment course is long, drug resistance is strong, relapse is easy, and recovered chickens can also be reinfected.

Treatment of infectious coryza in chickens

In epidemic areas where this disease has occurred, immunization according to the immunization program is recommended. For treatment, Huifengda's Huzhining can be selected, 100g diluted in 300 jin of water, no need to increase the dose, cured in 4 days. For prevention, double the amount of water.