maria rafique likes the comment:
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 ...
This member had joined Engormix
November 23, 2016