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Poultry Health Management logo eggs in racks Dr. Martin & students histopathology section of turkey spinal column
chicks in house on litter immunofluorescent antibody test student hands holding chick microscopic view of avian blood smear - stained

Research

We conduct basic and applied research on poultry health and production with an emphasis on emerging problems affecting the North Carolina poultry industry. Below are poster and slide presentations of various PHM research projects.

Poster Presentations

Posters presentations were prepared originally as large Microsoft Powerpoint 'slides' and converted to Adobe Acrobat (pdf) files - they can be viewed via your web browser with an Acrobat Reader 'plugin' or 'add-on', and re-sized to view the entire poster or sections of the whole.

Slide Presentations

Slide presentations were prepared originally as Microsoft Powerpoint presentations and converted to Adobe Acrobat (pdf) files - they can be viewed via your web browser with an Acrobat Reader 'plugin' or 'add-on', and viewed as slides in sequence.

2013 - American Veterinary Medical Association - American Association of Avian Pathologists, Chicago, IL

Multiple Host Transfers but Only One Successful lineage of Mycoplasma gallisepticum in House Finches
David H. Ley, Wesley M. Hochachka, André A. Dhondt, Irby J. Lovette, Andrew P. Dobson, and Dana M. Hawley

2011 - American Veterinary Medical Association - American Association of Avian Pathologists, Poultry Science Association, St. Louis, MO

Genotypic and Phenotypic Comparison of Field Isolates of Enterococcus cecorumin Outbreaks of Spondylitis
Kabel M. Robbins, Michael P. Martin, Paula Jay, Mitsu Suyemoto, H. John Barnes, and Luke B. Borst

Increased Mortality and Lameness in Male Broiler Breeders Prior to Peak Production Associated with Staphylococcus aureus
Michael P. Martin, Andy McRee, Kabel M. Robbins, Luke B. Borst, Kevin L. Anderson, Paula Jay, and H. John Barnes

Green Livers and Osteomyelitis in Heavy Toms
A.L. Hoffman, M.R. Slater, D. Rives, M.P. Martin, H. John Barnes

Sequential Pathogenesis of Chicken Proventricular Necrosis Virus (R11/3 Virus) in Transmissible Viral Proventriculitis-Affected Chickens
James S. Guy, Oscar J. Fletcher, H. John Barnes, Melissa A. West

Virulence Evolution of Mycoplasmal Conjunctivitis in House Finches
David H. Ley, Dana M. Hawley, Erik E. Osnas, Andy P. Dobson, Keila V. Dhondt, Jessica L. Grodio, Karel A. Schat, Wesley M. Hochachka, André A. Dhondt

Investigation of Enteritis and Elevated Mortality in Young Guinea Fowl
S. E. Tilley, K. M. Robbins, J. M. Day, H. J. Barnes

2010 - American Veterinary Medical Association - American Association of Avian Pathologists, Atlanta, GA

Bloody Vents Associated with Cloacitis in Broiler Breeder Flocks I: Field Investigations, Clinical Description, and Epidemiology
Michael P. Martin, H. John Barnes, Oscar J. Fletcher, David H. Ley, Rosemary Marusak, Kabel Robbins

Bloody Vents Associated with Cloacitis in Broiler Breeder Flocks II. Histopathology and Other Diagnostic Tests
Oscar J. Fletcher, Michael P. Martin, H. John Barnes, David H. Ley, Rosemary Marusak, Kabel Robbins

Mycoplasma iowae Real-Time PCR Validation and Comparative Testing of Samples from Commercial Turkeys
David H. Ley, Scott A. Callison

Parvovirus-Associated Cerebellar Hypoplasia and Hydrocephalus in Day-Old Broiler Chickens
R. A. Marusak, J. S. Guy, T. A. Abdul-Aziz, M. A. West, O. J. Fletcher, J. M. Day, L. Zsak, H. J. Barnes

Experimental Evaluation of In Ovo-Administered Recombinant Laryngotracheitis Virus Vaccines for Prevention of Disease in Broiler Chickens
J. S. Guy, M. West, I. Gimeno

Phenotypic Analysis of Enterococcus cecorum Field Isolates Associated with Vertebral Osteoarthritis
Kabel Robbins, Luke Borst, Michael P. Martin, Paula Jay, Mitsu Suyemoto , and H. John Barnes

Hepatic Lipidosis (Acute Hepatic Necrosis) in Turkeys
Oscar J. Fletcher, Tahseen Abdul-Aziz

Macrorhabdis ornithogaster in Hobby Chickens
Oscar J. Fletcher, Elena L. Behnke

Avian Histopathology in the Digital Age: Update on Virtual Slides
Oscar J. Fletcher

2008 - American Veterinary Medical Association - American Association of Avian Pathologists, New Orleans, LA

Website Resource Center for Emergency Preparedness, Biosecurity, and Reportable Poultry Diseases Information
David H. Ley

Morphometric Evaluation of Proliferative Lesions in In-Situ Fixed Chicken Lungs
Oscar J. Fletcher, H. John Barnes, Michael Martin, Isabel Gimeno

Diagnosis of Marek’s Disease by Real Time PCR from Samples Collected on FTA® Cards
A.L. Cortes, E. Montiel, I.M. Gimeno

Optimization of Revaccination Procedure to Improve Protection Against Marek’s Disease
Isabel M. Gimeno, A.L. Cortes, R.L. Witter

Mycoplasmosis: M iowae, M gallispeticum

MI spine HOFI MG eye score 3 AFLP RAPDMG epi curve
Mycoplasma iowae Associated with Chondrodystrophy in Commercial Turkeys
2010 Avian Pathology 39:2, 87-93

Mycoplasma iowae Associated with Chondrodystrophy and Vertebral Deformities in Commercial Turkeys
2010 International Organization for Mycoplasmology, Chianciano Terme, Italy

Transmission and Pathology of Mycoplasmal Conjunctivitis in House Finches
2010 NSF-NIH Ecology of Infectious Disease program

Mycoplasmal Conjunctivitis in House Finches: Spatio-temporal Pathogen Evolution
2009 NSF-NIH Ecology of Infectious Disease program

Mycoplasma iowae Associated with Vertebral Osteochondrosis in Commercial Turkeys
2007 American Veterinary Medical Association - American Association of Avian Pathologists, Washington, DC

Rapid Expansion of a New Disease in Wild Birds

Implications of Multiple Pathogen Transmission Routes for Host – Disease Dynamics

Further Western Spread of Mycoplasma gallisepticum Infection of House Finches
2006 American Veterinary Medical Association - American Association of Avian Pathologists, Honolulu, HI

Variability of Mycoplasma gallisepticum Isolates from House Finches Detected by Random Amplification of Polymorphic DNA (RAPD) and Amplified Fragment Length Polymorphism (AFLP)
2004 American Association of Zoo Veterinarians, American Association of Wildlife Veterinarians, Wildlife Disease Association. San Diego, CA

Mycoplasma gallisepticum Outbreaks in North Carolina, 1999-2001: Lessons Learned from the Tail End of the Epidemic Curve
2003 American Veterinary Medical Association - American Association of Avian Pathologists, Denver, CO

Broiler Breeders: Calcium Tetany, Hypocalcemia

chicken breast with muscle necrosis chicken myopathy adductor muscle
Calcium Tetany and Early Lay Mortality in Broiler Breeders
2006 North Carolina Broiler Breeder and Hatchery Management Conference, Statesville, NC

Pre-Peak Lay Broiler Breeders with Impaired Mobility and High Mortality Associated with Myopathy and Hypocalcemia
2007 American Veterinary Medical Association - American Association of Avian Pathologists, Washington, DC

Avian Tumor Viruses: Marek's Disease, Subgroup J Leukosis Virus

Normal and MD eye MD histopathology early eye lesion

Marek’s Disease Virus Infection in Chickens: A Natural Model for VZV-Induced Eye Lesions
2007 American College of Veterinary Pathologist (ACVP) Annual Meeting.  Savannah, GA

Pathogenesis and Characterization of Subgroup J Avian Leukosis Virus-Induced Histiocytic Sarcomas in Meat-type Chickens
2006 American College of  Veterinary Pathologist (ACVP) Annual Meeting.  Tucson, AZ

Load of MDV DNA in Peripheral Blood as Criterion for Early Diagnosis of Marek’s Disease
2006 American Veterinary Medical Association - American Association of Avian Pathologists, Hawaii, HI

Relationship Between Load of Marek’s Disease Vaccine DNA in Peripheral Blood and Level of Protection2007 - American Veterinary Medical Association - American Association of Avian Pathologists, Washington, DC

Effect of Vaccination on the Development of Marek’s Disease Virus-Induced Retinopathy
2007 - American Veterinary Medical Association - American Association of Avian Pathologists, Washington, DC

Pathogenesis of Serotype 1 Marek’s Disease Vaccines in the Lung
2007 - American Veterinary Medical Association - American Association of Avian Pathologists, Washington, DC


broiler lung with Parabronchial Proliferative Lesion
Proliferative Lung Disease in Broiler Breeder Hens
2006 American Veterinary Medical Association - American Association of Avian Pathologists, Honolulu, HI

cytology
Cytological Diagnosis of Coccidial Infections in Turkeys
2006 American Veterinary Medical Association - American Association of Avian Pathologists, Honolulu, HI

litter impaction
Litter Impaction of the Lower Intestinal Tract in Male Broiler Breeders
Addendum: Litter Impaction of the Lower Intestinal Tract in Female Broiler Breeders
2006 American Veterinary Medical Association - American Association of Avian Pathologists, Honolulu, HI

ovarian cysts
Pathology of Older Laying Hens
2006 American Veterinary Medical Association - American Association of Avian Pathologists, Minneapolis, MN

normal size and stunted turkey poults
Poult Enteritis and Mortality Syndrome (PEMS)