What is Sevin (poultry dust) primarily used for?

Sevin, also known as carbaryl, is a broad-spectrum insecticide commonly used in various agricultural settings, including the care of poultry. Its primary use is to control external parasites such as mites, lice, and fleas that can infest birds. These external parasites can cause discomfort, transmit diseases, and lead to diminished health and productivity in poultry.

External parasites can compromise the well-being of birds, making it crucial for poultry owners to manage infestations effectively. Sevin works by disrupting the nervous system of these pests, leading to their elimination. This makes it a popular choice for those involved in bird breeding and poultry farming.

While the other options mention specific health concerns, such as frounce (a respiratory disease caused by a protozoan parasite) and coccidiosis (a parasitic disease affecting the intestine), Sevin does not target internal infections or diseases. Moreover, plumage refers to the feathers of the birds, which Sevin does not directly address. Therefore, the main focus of Sevin is on the control of external parasites, validating its use in that context.