Can laying hens be vaccinated against Salmonella during the laying period?
Horacio Raúl Terzolo, thanks for your question
A trial to demonstrate not excretion of the vaccine strain and protection of Primun Salmonella E against field strains during laying period in commercial laying hens has been submitted and approved to be presented in the Mediterranean Poultry Summit (WPSA Congress). The congress will be held in June in Cordoba (Spain) and the paper will be available in June. However, the most important thing is that the European Medicine Agencies approved this application during laying period and gave the authorization to Primun Salmonella E for that use. More than any other congress, the authorization coming from the European Agencies is the highest recognition.
Vaccination during laying period depend on the type of vaccine. Obviously, using an inactivated vaccine or an injected live vaccine is not an option.
However, if you have a drinking water live vaccine authorized for use in laying period with no excretion, safe and with a good level of protection you can do it.
It is a decision of the veterinarian in charge and it all depends on level of infection.
On the other hand, obviously is not the same to use a SG9R vaccine or a Enteritidis vaccine.
So, we have to take into consideration all these factors.
Have you tried to increase the immune system of the animals so that they don't have to be vaccinated so much? Do you make feed with sufficient nutritional quality so that the animals have a strong immune system? Have you tried to give in the water of the animals efficient Em?
Vaccines and antibiotics and vice versa. This is how contaminated we all are and this is how people's diseases are caused by so much medicine given to animals in intensive farms.
A little more humanity, please.
Dominican Republic