I. The etiology of myiasis in rabbits
The pathogen of myiasis in rabbits is A Dipteran insect resembling a bee, when male and female flies fly onto a rabbit and lay eggs in the rabbit’s mouth, nose, anus, genital openings, wounds or some hairy parts, 1 to 2 days later, the eggs Hatching and invading the rabbit’s subcutaneous tissue, the larvae can communicate with the outside world through the insect channel, and parasitic in the rabbit’s body for a long time, feeding on the rabbit’s necrotic tissue or blood. After several weeks of growth, the larvae gradually complete two molts and become third-stage larvae. The third stage larvae will leave the rabbit’s body through the insect tunnel, burrow into the shallow loose soil, then pupate, and finally emerge into a fly.
2. Symptoms of myiasis in rabbits
Rabbit myiasis is more common in summer and Rabbits of any age can get the disease in the fall, but the disease is more harmful to young rabbits. In most cases, the initial clinical symptoms of myiasis in rabbits are not obvious. After the larvae hatched, they migrated deep into the rabbit’s subcutaneous tissue, and the affected rabbits reacted with anxiety or screaming. At the same time, the larvae invaded the local skin and produced inflammatory secretions. As the larvae of the larvae grow, dysfunction of the corresponding organs will appear in the invaded part of the rabbit. If a necropsy is performed on a sick rabbit, it can be seen that the subcutaneous tissue that has been invaded forms a swollen fistula. If it is infected by secondary bacteria, an abscess will also form. After the abscess ruptures, a foul-smelling reddish-brown pus will flow out. Fly maggots can also be seen.
Third, the control method of rabbit myiasis
1. Use Ivermectin drug therapy. The sick rabbits were injected subcutaneously with ivermectin at a dose of 0.02 mg/kg body weight. If the sick rabbits have symptoms such as elevated body temperature and loss of appetite in rabbits, they need to be intramuscularly injected with 200,000 units of penicillin and 20,000 units of streptomycin, twice a day.
2. Exclude insects and flies. If the body of the rabbit is found to be parasitized by fly maggots, it is necessary to use a surgical blade to cut the part of the rabbit parasitized by fly maggots, and use tweezers to remove the fly maggots; or you can drop 1 to 2 drops of ether or chloroform on the affected area of the sick rabbit. If the rabbit’s skin is purulent, the affected area can be washed with hydrogen peroxide, necrotic tissue removed, and treated with an anti-inflammatory agent.
3. Eliminate flies in the rabbit house. Summer and autumn are the periods when flies are more active. For this reason, in summer and autumn, it is necessary for the owner to regularly use insecticides such as trichlorfon, pyrethrin and fenthion to spray around the rabbit house to inhibit the flies. Invasion.
The above is our introduction to rabbit myiasis. I hope that all rabbit owners can understand the harm of rabbit myiasis through the above introduction, and usually pay attention to the rabbit myiasis. Do a good job in the prevention of the disease.
