Influence of dermanyssus gallinae on health and production in layers [Polish]

摘要

Aim of the study was to estimate the influence of Dermanyssus gallinae on the health and production of layers. The study was carried out in a layer cross-breeding (HYLINE) farm of 17,650 birds. The material for investigation was collected from different areas beneath the feed-and eggs transporters. Parasite examination occurred at the 29th week of life and confirmed a massive prevalence of Dermanyssus, gallinae. Puralyl (active substance: 1-Naphthalenyl-methylearbamate) in solution was used to control the Dermanyssus gallinae invasion. The drug was applied three times at 7-day intervals. The efficacy of the treatment was established 10 and 20 days following drug application. The D. gallinae invasion reduced egg 1 production by about 20.77% and increased the mortality rate to 6.17%.