Northern fowl mite (Ornithonyssus sylviarum) control evaluations using liquid formulations of diatomaceous earth, kaolin, sulfur, azadirachtin, and Beauveria bassiana on caged laying hens

作者：Mullens B A^*; Soto D; Martin C D; Callaham B L; Gerry A C

来源：Journal of Applied Poultry Research, 2012, 21(1): 111-116.

DOI：10.3382/japr.2011-00402

• control
• Northern fowl mite
• Ornithonyssus sylviarum

Liquid formulations of nontraditional materials for northern fowl mite control were applied to the vent feathers of infested hens, and the mite populations on hens were monitored before and after treatment. High concentrations (%26gt;= 5.3%) of sulfur eliminated mites for periods of at least 8 to 10 wk. A lower sulfur concentration (0.9%) essentially eliminated mites for approximately 4 to 5 wk and greatly reduced mites for 5 to 8 wk. Azadirachtin (derived from the neem tree) at 0.06% reduced, but did not eliminate, mites for approximately 3.5 wk after treatment. Of the inert dusts, kaolin (12% by wt, in water) somewhat reduced mites for approximately 1 wk after 1 application, but 2 consecutive weekly applications controlled mites for 2 to 3 wk. Diatomaceous earth (12% by wt, in water) reduced mites significantly only if applied for 2 consecutive weeks, and its effects then lasted %26lt;2 wk. Beauveria bassiana at 1 x 10(8) conidia/mL effectively killed mites in a glass tube, but showed only moderate on-hen control for 1 wk in 1 of 2 trials. In declining order of effectiveness, the materials were ranked as follows: high sulfur %26gt; low sulfur %26gt; neem %26gt; kaolin clay %26gt; diatomaceous earth %26gt; Beauveria.

• 出版日期2012-3