Programa de Pós-Graduação em Sistemas Ambientais Sustentáveis, Universidade do Vale do Taquari - Univates, Av. Avelino Talini, 171 Bairro Universitário, Lajeado, Rio Grande do Sul, CEP 95914-014, Brasil.
Centro de Ciências da Vida, Universidade do Vale do Taquari - Univates, Lajeado, Rio Grande do Sul, Brasil.
Exp Appl Acarol. 2024 Jan;92(1):61-85. doi: 10.1007/s10493-023-00869-1. Epub 2023 Dec 21.
Mites are considered a threat to the commercial poultry industry due to their direct and indirect pathogenic effects. Dermanyssus gallinae is among the mite species that endanger production, as it is hematophagous and poses a serious sanitary risk. Recently, Tyrophagus putrescentiae has also drawn attention as a potential pest in the poultry industry, and its attacks have been related to clinical symptoms such as cutaneous eruptions and bird restlessness. Considering the potential economic, sanitary, and productive losses both species represent to the laying-hen industry, the aim of the present study was to evaluate the influence of D. gallinae and T. putrescentiae on the health and productivity of commercial laying hens by carrying out infestation experiments and by monitoring laying hens for a period of 60 days. Tyrophagus putrescentiae and D. gallinae affected egg quality and zootechnical parameters in laying hens. Hens infested by T. putrescentiae had behavioral changes, weight loss, stress symptoms, and decreased egg laying and quality, as well as diarrhea, gradual feather loss, and itching. Hens infested by D. gallinae also had weight loss, behavioral changes, and stress symptoms, leading to decreased laying and egg quality. The present study proposes an experimental model to understand the impacts caused by T. putrescentiae and D. gallinae on commercial laying production and egg quality parameters.
螨类因其直接和间接的致病性而被认为是商业家禽业的威胁。鸡皮刺螨是威胁生产的螨类之一，因为它是吸血的，并构成严重的卫生风险。最近，腐食酪螨也因其在家禽业中的潜在害虫而引起关注，其攻击与皮肤疹和鸟类不安等临床症状有关。考虑到这两种物种对蛋鸡产业代表的潜在经济、卫生和生产损失，本研究的目的是通过进行侵染实验和对商业蛋鸡进行 60 天的监测，评估鸡皮刺螨和腐食酪螨对健康和生产性能的影响。腐食酪螨和鸡皮刺螨影响蛋鸡的蛋品质和饲养参数。感染腐食酪螨的母鸡表现出行为改变、体重减轻、应激症状、产蛋量和蛋品质下降，以及腹泻、羽毛逐渐脱落和瘙痒。感染鸡皮刺螨的母鸡也出现体重减轻、行为改变和应激症状，导致产蛋量和蛋品质下降。本研究提出了一种实验模型，以了解腐食酪螨和鸡皮刺螨对商业蛋鸡生产和蛋品质参数的影响。
