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Studies on the control of Mycoplasma gallisepticum in hatching eggs
Abstract:
Lincomycin-spectinomycin, while effective in eliminating Mycoplasma gallisepticum from hatching eggs when administered via the yolk sac, had a marked deleterious effect on hatch-ability when given by this route. On the other hand when lincomycin-spectinomycin was injected into the air cell there was a reduction in the level of experimental infection with an acceptable effect on hatchability.
Insights
Administering lincomycin-spectinomycin via the yolk sac effectively eliminates Mycoplasma gallisepticum but harms hatchability. Injection into the air cell reduces infection with acceptable effects on hatchability.
Area of Science:
- Veterinary Medicine
- Microbiology
- Poultry Science
Background:
- Mycoplasma gallisepticum is a significant pathogen in poultry.
- Effective treatment of Mycoplasma gallisepticum in hatching eggs is crucial for flock health.
- Yolk sac administration of antibiotics is a common route for treating hatching eggs.
Purpose of the Study:
- To evaluate the efficacy and safety of lincomycin-spectinomycin for Mycoplasma gallisepticum elimination in hatching eggs.
- To compare the effects of yolk sac versus air cell administration on hatchability and infection levels.
Main Methods:
- Hatching eggs were experimentally infected with Mycoplasma gallisepticum.
- Lincomycin-spectinomycin was administered via yolk sac injection or air cell injection.
- Hatchability rates and Mycoplasma gallisepticum levels were assessed post-treatment.
Main Results:
- Yolk sac administration eliminated Mycoplasma gallisepticum but significantly reduced hatchability.
- Air cell administration reduced experimental Mycoplasma gallisepticum infection.
- Air cell administration resulted in acceptable hatchability rates.
Conclusions:
- Lincomycin-spectinomycin is effective against Mycoplasma gallisepticum in hatching eggs.
- Air cell injection is a preferred route for lincomycin-spectinomycin administration due to better hatchability outcomes.
- Optimizing antibiotic delivery methods is key to balancing efficacy and safety in poultry treatment.