Salmonella Enteritidis Vaccine
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Salmonella Enteritidis vaccine (Salmovac) is indicated for active immunization of chickens to reduce infection, transmission, and contamination of eggs.
INDICATIONS
- Reduction of Colonization and Invasion: To minimize the presence and multiplication of Salmonella Enteritidis (and sometimes Salmonella Typhimurium) in the intestinal tract and internal organs (liver, spleen, ovaries, caeca).
- Prevention of Egg Contamination: A crucial indication is the prevention of SE contamination in eggs, which is a primary source of human foodborne infections.
- Reduction of Faecal Excretion: To decrease the shedding of the bacteria in droppings, thereby limiting the spread of the infection within the flock and the environment.
- Reduction of Clinical Signs and Mortality: For the active immunization of healthy, susceptible birds to reduce disease signs and death caused by the infection, particularly in young chicks who are highly susceptible.
ADMINISTRATION
- Delivery: Often mixed with drinking water, sprayed, or given as eye drops.
- Preparation: Reconstituted with water, sometimes using skimmed milk powder to stabilize.
- Timing: Water may be withheld for a few hours before vaccination to ensure all birds drink.
- Dosage: Diluted for consumption within a few hours (e.g., 2L/1000 birds initially, increasing with age).
- Example Schedule: First dose at day-old, repeated at 6-8 weeks, and potentially again before laying.
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