The acaricidal speed of kill of orally administered fluralaner against poultry red mites (Dermanyssus gallinae) on laying hens and its impact on mite reproduction
| Autor: | Heike Williams, Eva Zschiesche, Anja Regina Heckeroth, Hartmut Zoller, Maria D. Brauneis |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Fluralaner Veterinary medicine Mite Infestations Dermanyssus gallinae Poultry red mite Oviposition 030231 tropical medicine medicine.disease_cause lcsh:Infectious and parasitic diseases 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Infestation parasitic diseases Mite medicine Drinking water Animals lcsh:RC109-216 Nymph Laying hen Ectoparasiticide Acaricides Poultry Diseases Mites biology integumentary system Acaricide business.industry Research Reproduction Isoxazoles Poultry farming biology.organism_classification 030104 developmental biology Infectious Diseases chemistry Parasitology Female Speed of kill business Chickens |
| Zdroj: | Parasites & Vectors Parasites & Vectors, Vol 10, Iss 1, Pp 1-8 (2017) |
| ISSN: | 1756-3305 |
| Popis: | Background Dermanyssus gallinae, the poultry red mite, is a growing threat to chickens in poultry farms. This nocturnal hematophagous ectoparasite has a rapid rate of proliferation with a negative impact on the birds’ health, welfare and productivity resulting in severe economic consequences for poultry farmers. A study was performed with fluralaner, a novel systemic ectoparasiticide, to evaluate its effect on mite vitality and reproduction after oral administration to laying hens. Methods Sixteen healthy hens were randomly allocated to two study groups (n = 8). One group was orally treated with fluralaner by gavage at a dose of 0.5 mg/kg bodyweight twice 7 days apart. The negative control group received no treatment. Hens in each group were repeatedly infested with approximately 200 unfed adult D. gallinae at 1, 5, 8, 12, 15, 19, 22 and 26 days after the initial administration. After infestation and feeding for 2.5 h, 25 engorged mites per hen were collected and incubated in tubes. Mites were assessed for vitality (dead/live) at 4, 8, 12, and 24 h after each infestation. Tubes containing eggs and/or living mites were incubated another 8 days for assessment of mite reproductive capacity. Results Fluralaner demonstrated a fast speed of kill in mites within 4 h post-infestation for 12 days after treatment initiation. An efficacy (mite mortality) of 98.7–100% was achieved. At 15 days after treatment initiation, 100% efficacy was achieved within 24 h post-infestation, and no mite oviposition occurred during this period. Nineteen days after treatment initiation, the mites’ ability to generate nymphs was reduced by 90.8%, which decreased to |
| Databáze: | OpenAIRE |
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