Theses and Dissertations


Issuing Body

Mississippi State University


Peebles, E. David

Committee Member

Evans, Jeff D.

Committee Member

Pharr, Todd

Committee Member

Elliott, Katie

Committee Member

Sukumaran, Anuraj Theradiyil

Date of Degree


Document Type

Graduate Thesis - Campus Access Only



Degree Name

Master of Science (M.S.)


College of Agriculture and Life Sciences


Department of Poultry Science


Mycoplasma gallisepticum (MG) can cause chronic respiratory disease in chickens and infectious sinusitis in turkeys. Impacts of MG infections can include increased morbidity and mortality, decreased egg production, hatchability and feed efficiency. Biosecurity and bio-surveillance remain the primary means of deterrence as the current means of control are not wholly effective. Further applications towards the characterization of MG-related disease control requires proper understanding of the characteristics of MG infections with accurate and efficient quantification of in vivo MG populations. To this end, study was conducted to determine the in vivo MG populations in infected pullets and to determine impact of sampling schedule. The role of sampling in 3 distinct anatomical sites, and their associated MG populations were also compared. Results confirmed that sampling events did not affect MG populations and as a possible confounding factor, sampling frequency could be avoided for the future development of novel means of MG control.