Benida D. Baysac

With respect to the Mycoplasma control by vaccination there are as well mentioning live and inactivated vaccines.Inactivated vaccines (bacterins) give only humoral immunity and help in part of the diffusion and clinical pictures to make them milder, but they do not avoid the infection of the birds or their persistence in the farms and more in farms with different ages.with the live ones, the F str ...

Short period of immunity during vaccination can be caused by series of activities that goes around before, on or after the vaccination. The following could be the reasons; 1 Flock pre-vaccination handling: As it is the rule of thumb that sick birds should not be vaccinated because of the level of immunity, they have as then is low, which if vaccinated may pose stress on the birds and the body inte ...

Dear SIr,Biosecurity, correct management and strategic vaccination are required to eliminate the occurrence of Infectious Bronchitis in broiler farms - easier said than done? YES, it will be a long shot!First, we must fix the biosecurity issues in the area. We are still hopeful to encourage the farmers to promote basic biosecurity protocols in the farm with the help of private and government veter ...

Dr. Beny Perelman 1. Massachusetts Not Manchester2. Var ll strain was controlled perfectly with vaccines from group 793B + Mass type in layer pullets and heavy pullets in Israel (Against the "False Layer" manifestation). The protectotype concept works very well. Later in age Var ll was added to heavy pullets to confer more specific immunity to the flock (for the production period).3. The Var ll va ...