| Report of Dermanyssus gallinae infection in a laying hen farm in Kermanshah city, western Iran |
| Paper ID : 1117-IPCA5 (R2) |
| Authors |
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Amir Amani1, Mosrafa Razmjoo1, ّّFarid Rezaei *2 1Department of Clinical Sciences, Faculty of Veterinary Medicine, Razi University, Kermanshah, Iran 2Department of Pathobiology, Faculty of Veterinary Medicine, Razi University, Kermanshah, Iran |
| Abstract |
| Blood sucking mites are important avian ectoparasites with worldwide distribution. Their presence is problematic for the industry because of their direct effects on weight gain, egg production, sperm production in roosters, or as nuisance pests on workers handling hens and eggs. Among all, Dermanyssus gallinae (poultry red mite) is the most important and widespread pest as it is an obligatory blood-sucker feeding on many domestic and wild birds, reproduces very rapidly, transmits several pathogens, and can invade human skin. In poultry, it causes vascular damage, loss of blood, and skin rashes, and sometimes leads to death, imposing economic losses. Urban and migratory birds are most often responsible for the distribution of avian diseases in different areas. The aim this study was determine the cause of death in a laying hen unit in Kermanshah city. During March and April 2025, a laying hen farm, with a capacity of 2,000 laying hens, was visited in Kermanshah city, western Iran. The hens were severely infested with moving red mite at the age of 54 weeks, and had a daily mortality rate of 4 to 5 birds. Infection with Dermanyssus gallinae was confirmed by clinical examination and sampling. For treatment, oral Nomite (Fluralaner 1%), vitamin B complex, and vitamin B12 were administered. After one week, the mortality stopped and egg production increased by about 10%. Immediately after oral treatment, to further control the mites, all surfaces and cage bases were disinfected with Cypermethrin 10% solution. Also, all of the gates that allowed urban and migratory birds to enter the saloon were blocked. Given the importance of D. gallinae in reducing production and mortality in poultry and the possibility of its transmission to humans, control of this mite in poultry houses seems essential. |
| Keywords |
| Dermanyssus gallinae, Poultry red mite, Laying hen, Kermanshah, Treatment |
| Status: Abstract Accepted |
