Control of chronic respiratory disease. VII. The effect of controlled versus natural infection of chickens with Mycoplasma gallisepticum on Egg transmission.
D000372:Agglutination Tests; D000818:Animals; D001947:Breeding; D004531:Eggs; D009174:Mycoplasma / Q000276:immunology* / Q000302:isolation & purification; D011201:Poultry Diseases / Q000517:prevention & control*; D012141:Respiratory Tract Infections / Q000662:veterinary*