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[Human exposure to livestock pollutants].

The paper describes the sources and characteristics of the particulate matter (PM) generated in pig and poultry facilities. PM origins from the food, the peeling of the skin, loss of fur or feathers, from feces and litter, if present. The PM concentrations measured during the day change due to the management of the litter, the distribution of the food and the cleanliness of the shelters. There are several methods to protect the welfare of animals and stockmen, among which the ventilated ceilings are today the most innovative choice.