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Education Courses Pathology 2 – Poultry pathology

Pathology 2 – Poultry pathology

Method of evaluation
semi-final examination
Year in the curriculum
Semester in the curriculum
Practical lessons
veterinary (English)
Allow for
  • Vet EN

Course description

Poultry related topics always have a special place among the veterinary subjects. The different anatomy, physiology and diseases of the birds explain the separate discussion of avian pathology.
The environmental conditions also differ as poultry (birds which are raised as a sourse of meat or eggs for human consumption) are kept in large scale farms where spreading of infectious diseases or animal hygiene problems caused by malmanagement or malnutrition are frequently seen.

During the semester the most important pathological lesions and related diseases are summarized in 50 topics starting from the low vitality chickens through lesions in the differerent organ systems till the special virus induced tumors of birds.

Besides the lecture notes several webpages can be used to study Poultry Pathology:

Lectures theme

1. week (18 Sept)

Importance of avian pathology; Avian anatomy; Physiology of birds; Pathology of egg; Mushy chick disease

2. week (25 Sept)

Mechanical traumas; Heat load and heat stress; Avian influenza (AI); Newcastle disease (ND); Turkey coronavirus (TuCoV)

3. week (2 Oct)

Practical characteristics of AI and ND

4. week (9 Oct)

Diseases caused by avian metapneumoviruses (AMP); Infectious bronchitis (IB); Infectious laryngotracheitis (ILT); Avian encephalomyelitis (AE); Diseases caused by reovirus; RSS/PEMS/malabsorption syndrome

5. week (16 Oct)

Infectious chicken anemia (ICA); Infectious bursitis (IBD); Inclusion body hepatitis; Hemorrhagic enteritis (HE); Egg drop syndrome (EDS)

6. week (23 Oct)


7. week (30 Oct)

Arboviruses; Hepatitis E; Avian nephritis; Turkey hepatitis; Proventricular Dilatation Disease (PDD) ; Other herpesviral diseases; Beak and Feather Disease Virus (BFDV) and other circo-, polyoma- and paramyxoviruses

8. week (6 Nov)

Marek’s disease MD; Leukosis; Reticuloendotheliosis (REV); Pox

9. week (13 Nov)

Fowl typhoid; Paratyphoid salmonellosis; Arizonosis; Colibacillosis; Fowl cholera

10. week (20 Nov)

Chlamydiosis; Mycoplasmosis; Coryza; Ornithobacterium rhinotracheale (ORT); Anatipestifer disease; Bordetellosis; Clostridiosies

11. week (27 Nov)

Campylobacteriosis; TB; Erysipelas; Streptococcosis; Staphylococcosis; Intestinal spirochaetosis; Yersiniosis; Pseudomoniasis; Listeriosis; Septicemia in general and other bacterial diseases

12. week (4 Dec)

Aspergillosis; Candidiasis; Mycotoxicosis; Coccidiosis; Cryptosporidiosis; Histomoniasis; Other protozoal diseases; Helminthoses; Ectoparasites

13. week (9 Dec) 14:15! (in practical time)

Skeletal diseases; Muscle diseases; Cardiovascular diseases; Vitamin deficiencies; Mineral deficiencies; Gastrointestinal syndromes; Gout

EXAM: 11 December 11:15 (in lecture time) on-line

Practical lessons theme

1. Pathology of the broilers 1-2. (23 Sept, 30 Sept)

23 Sept: groups 5.,6.,7.,8.

30 Sept: groups 1.,2.,3.,4.

2.  Pathology of the layers 1-2. (7 Oct, 14 Oct)

7 Oct: groups 5.,6.,7.,8.

14 Oct: groups 1.,2.,3.,4.

3.  Pathology of the eggs and newly hatched chicks 1-2. (21 Oct, 28 Oct)

21 Oct: groups 5.,6.,7.,8.

28 Oct: groups 1.,2.,3.,4.

4. Pathology of the water fowl 1-2. (4 Nov, 11 Nov)

4 Nov: groups 5.,6.,7.,8. 

11 Nov: groups 1.,2.,3.,4.

5. Pathology of the turkeys 1-2. (18 Nov, 25 Nov)

18 Nov: groups 1.,2.,3.,4.,5.,6.,7.,8. 


25 Nov: PRACTICAL EXAM I.  14:15



Evaluation description

The signature at the end of the semester is conditioned by the fulfillment of the practical requirements. Only 1 missed practical is allowed (with a certificate), and this practical should be made-up.

This semester is evaluated by a practical and written exam, with a 5-scale  mark (1-5).

It is obligatory to attend the practicals. Due to the high number of students in the dissection rooms at a practical, changing the scheduled group is only possible in case of sickness or clinical shift, with a certificate as far as possible.

Exam information

Before the exam (written, practical) we check the students’ identity, therefore every student should bring the blackbook, or valid identity card/student card/passport. Without any of these documents the student can not sit the exam.

Practical exam is scheduled on the 12th and 13th week of the semester, retake is on the 14th week. We evaluate the students’ skills of special dissection technique of birds and the description of lesions and diseases seen. This exam is marked with “pass” or “fail”. Passing the practical part is required to sit the written exam.

During the practical exam these technical mistakes will lead to automatic failure:

Body cavity:

  • cuts off the stomach from the intestine
  • does not use the proper technique to open up the stomachs
  • cannot identify the gender of the bird
  • leaves the bursa in the body cavity while taking out the GI tract
  • cuts off the tail of the bird while cutting around the cloaca

Oro-pharyngeal organs:

  • dissects the avian oral-cervical organs with the dissection technique used in mammals
  • cuts open the oral cavity, esophagus and trachea from the left side

Thoracic cavity:

  • cuts off the heart from the lungs
  • cannot identify the lungs and cannot take them out from the body


  • cuts the tibia in a wrong direction


  • finds lymph node in the bird (instead of thymus)
  • finds urinary bladder in the bird (instead of bursa Fabricii)

The practical grade is valid for further semesters in case of re-take of written exam.

The written exam is set on the time of the last  lecture and it contains 50 questions of the lecture material. A minimum of 60% of questions should be answered correctly to pass the exam. Exam is marked by a 5-scale grading system (1-5).

On the exam (written, practical) it is forbidden to use or to even have in pockets any kind of electronic device, mobile phone, headset, etc. , no matter if it is switched off. If we find any of these devices during the exam, or the student commit cheating of any manner (see it in the university’s detailed exam rules), the exam cannot be continued, the student fails immediately, without any consideration. The act of cheating will be reported to the Secretariat for International Study-Programs. The appeal does not lie.

Additional (optional) material for preparation beside lecture notes:

  • Dobos-Kovács Mihály – Vetési Ferenc: Colour Atlas of Vetereinary Pathology II. (Budapest, 2016)