ArticleTropical animal health and production2025
Combating ectoparasites in Togolese laying hens (Gallus gallus domesticus): exploring diversity, prevalence and environmental determinant.
Article in Tropical animal health and production, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Ectoparasites are pests that affect animals, particularly poultry. The presence of ectoparasites in birds affects their productivity and facilitates the transmission of pathogenic agents. This study aimed to explore the diversity of ectoparasites in laying hens, evaluate their prevalence, and analyse the environmental factors promoting the proliferation of ectoparasites. The study was conducted in three prefectures of the Maritime Region of Togo. A total of 576 Isa Brown laying hens were examined in three prefectures. This number was derived from ninety (90) Isa Brown layer farms equipped with an aviary. Each house contained an average of 500 laying hens. In each farm, the chosen house contained 26-week-old to 46-week-old birds selected at random, from which an average of 6 hens were chosen and examined. Ectoparasites were collected by freezing, direct ectoparasite sampling, leg scratching, and the weight of infested and non-infested birds. Ten (10) species of ectoparasites were identified, with an average infestation rate of 73.26%. The prevalence of acarid (59.54%) and louse (37.21%) parasitism was significantly higher (P < 0.0001) than the prevalence of flea (03.25%) parasitism. The variation in the prevalence rate of each ectoparasite species was significantly (P < 0.0001) related to the locality. Dermanyssus gallinae and Menacanthus stamineus were the most prevalent species, with 100% and 70.23% prevalence rates, respectively. The length of time the litter remains in the house before being replaced during the laying season is the most important factor (P < 0.0001) favors the proliferation of ectoparasites. Laying hens are more infested by Dermanyssus gallinae and Menacanthus stamineus, and the duration of brood renewal is the most important factor in the proliferation of ectoparasites. Most ectoparasites proliferate when the temperature in poultry houses is above 28 °C and the humidity is above 47%. To effectively combat the adverse effects of these ectoparasites, research should focus on the vector-borne diseases they transmit to poultry.
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