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Updated: Jun 19, 2026
06:56
Influenza Virus Propagation in Embryonated Chicken Eggs
Published on: March 19, 2015
OVARIAN INFECTION IN THE DOMESTIC FOWL AND DIRECT TRANSMISSION OF DISEASE TO THE OFFSPRING
1Sheffield Scientific School of Yale University, New Haven.
The Journal of Experimental Medicine
|October 30, 2009
Summary
Ovarian infection with Salmonella enterica serovar Enteritidis causes bacillary white diarrhea in chicks. Infected adult fowl transmit the bacteria through eggs, leading to chick mortality and carrier states.
Area of Science:
- Veterinary Science
- Poultry Health
- Infectious Diseases
Background:
- Bacillary white diarrhea causes significant losses in the poultry industry.
- The disease primarily affects young chicks, leading to high mortality rates.
- Carrier states in surviving chicks are common, with the ovary as a primary infection site.
Purpose of the Study:
- To investigate the role of ovarian infection in bacillary white diarrhea.
- To demonstrate germinal transmission of the disease in domestic fowl.
- To elucidate the transmission cycle of Salmonella Enteritidis in poultry.
Main Methods:
- Investigations focused on identifying Salmonella Enteritidis in infected fowl and eggs.
- Studies examined the ovary as a site of infection in carrier birds.
- Transmission routes, including germinal and fecal-oral, were analyzed.
Main Results:
- Ovarian infection and germinal transmission of bacillary white diarrhea were confirmed.
- Salmonella Enteritidis was frequently found in the yolk of eggs from infected carriers.
- Chicks hatching from infected eggs were diseased at birth, and transmission occurred via droppings.
Conclusions:
- Ovarian infection is a key factor in the perpetuation of bacillary white diarrhea.
- Germinal transmission through eggs is a significant route for disease spread in poultry.
- Fecal-oral transmission via droppings completes the infection cycle, leading to epidemics.
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