Table 34.

Hazards related to gastroenteric disorders. Hazards written in bold are scientifically proven by more than one source, those in normal text were found in only one paper, those in italic have been mentioned by the experts invited to the technical hearing meeting

Hazard category	Hazard
Housing	Restricted space, high stocking density, unsuitable floor type (solid floor impairing hygiene), lack of roughage, stress
Ambient condition	Too high air speed and low temperature
Genetics	Commercial lines with less resistance to digestive diseases
Nutrition and feeding	Unbalanced diet, contamination of feed and water, insufficient quantity of milk for kits Excessive feed intake after weaning
Management of biosecurity	Poor hygiene of housing equipment, poor removal of faeces (cage and nest, feeder), lack of control of insects and rodents (transmission of Salmonella )
Management of reproduction	Early weaning, intensive reproductive cycle
Other	Inadequate use of antibiotics for early treatment