title: Experiments in the management of SPF chicken flocks.
mesh_terms: D000821:Animal Feed; D000818:Animals; D002645:Chickens; D005856:Germ-Free Life; D006799:Housing, Animal; D008991:Monitoring, Physiologic; D011201:Poultry Diseases / Q000517:prevention & control*; D014777:Virus Diseases / Q000517:prevention & control / Q000662:veterinary*