| Title: | Modulation of feed composition is able to make hens less attractive to the poultry red mite Dermanyssus gallinae |
| Author(s): | El Adouzi M; Arriaga-Jimenez A; Dormont L; Barthes N; Labalette A; Lapeyre B; Bonato O; Roy L; |
| Address: | "CEFE, Univ Paul Valery Montpellier 3, CNRS, Univ Montpellier, EPHE, IRD, Montpellier, France. Instituto de Ecologia, A.C., INECOL. Red de Ecoetologia, Carretera antigua a Coatepec 351, El Haya, Xalapa91070, Veracruz, Mexico. CEFE, CNRS, Univ Montpellier, Univ Paul Valery Montpellier 3, EPHE, IRD, Montpellier, France. Nor-Feed SAS, 3 rue Amedeo Avogadro, 49070 BEAUCOUZE, France. IRD UMR IPME, 911 avenue Agropolis, BP 64501. 34394 Montpellier cedex 5, France" |
| DOI: | 10.1017/S0031182019001379 |
| ISSN/ISBN: | 1469-8161 (Electronic) 0031-1820 (Print) 0031-1820 (Linking) |
| Abstract: | "The poultry red mite (PRM) is an obligatory haematophagous pest that causes substantial economic losses in poultry worldwide. The PRM does not live on the host but in the bird's environment and must find its host remotely. Hence, manipulating chicken odours is of interest. Several crude plant-originating volatile organic compounds (VOCs) have already been shown as repellent to Dermanyssus gallinae. We aimed to test whether these VOCs can interfere with PRM host-seeking behaviour by their oral administration to the poultry. The objectives were to determine (1) if hen odours are modified by supplemented feed ingestion and (2) if such treatment makes hens less attractive to the PRM. Chemical characterization by gas chromatography-mass spectrometry of the hen odour was conducted before and after the hens ingested the supplemented feed. The chromatograms obtained show that hen odour was substantially modified after the hens consumed it. Among the molecules recurrently detected from the supplemented hens, 26% were nearly absent in the unsupplemented hens. Behavioural choice tests to compare the effect of the modified and unmodified-host odours on the PRM show that some of the plant-originating emitted VOCs and the modified whole-hen odours were repellent to the PRM" |
| Keywords: | Acaricides Animal Feed/*analysis Animals *Chickens/parasitology Diet/veterinary Dietary Supplements Female Insect Repellents Mite Infestations/prevention & control/*veterinary Odorants Poultry Diseases/*parasitology/prevention & control Trombiculidae/*dru; |
| Notes: | "MedlineEl Adouzi, Marine Arriaga-Jimenez, Alfonsina Dormont, Laurent Barthes, Nicolas Labalette, Agathe Lapeyre, Benoit Bonato, Olivier Roy, Lise eng Clinical Trial, Veterinary Research Support, Non-U.S. Gov't England 2019/09/29 Parasitology. 2020 Feb; 147(2):171-181. doi: 10.1017/S0031182019001379. Epub 2019 Oct 15" |
