Effects of time-specific F-strain Mycoplasma gallisepticum inoculation overlays on prelay ts11-strain Mycoplasma gallisepticum inoculation on performance characteristics of commercial laying hens

Mycoplasma bacteria are virtually ubiquitous in layer chicken flocks, and Mycoplasma gallisepticum is the species of greatest concern to commercial egg producers. Live M. gallisepticum vaccines were initially approved by the USDA for use in commercial layers in 1988 to help control M. gallisepticum...

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Veröffentlicht in:	Poultry science 2008-04, Vol.87 (4), p.655-660
Hauptverfasser:	Vance, A M, Branton, S L, Collier, S D, Gerard, P D, Peebles, E D
Format:	Artikel
Sprache:	eng
Schlagworte:	administration & dosage Age Factors animal age Animals Bacterial Vaccines Bacterial Vaccines - administration & dosage Bacterial Vaccines - immunology body weight Chickens Chickens - immunology disease control egg production egg shell thickness egg weight Eggs Female immunology incidence laying hens live vaccines microbiology mortality Mycoplasma gallisepticum Mycoplasma gallisepticum - immunology Mycoplasma Infections Mycoplasma Infections - immunology Mycoplasma Infections - microbiology Mycoplasma Infections - prevention & control Mycoplasma Infections - veterinary Oviposition Poultry Diseases Poultry Diseases - immunology Poultry Diseases - microbiology Poultry Diseases - prevention & control prevention & control Respiratory Tract Diseases Respiratory Tract Diseases - immunology Respiratory Tract Diseases - microbiology Respiratory Tract Diseases - prevention & control Respiratory Tract Diseases - veterinary strain differences surface area temporal variation vaccination Vaccination - veterinary Vaccines, Attenuated Vaccines, Attenuated - administration & dosage Vaccines, Attenuated - immunology veterinary
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