1ملخص لأهم أمراض الدواجن
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Transcript of 1ملخص لأهم أمراض الدواجن
ملخص ألهم أمراض الدواجنضمن فعاليات اليوم التدريبي لألطباء البيطريين
بالقاهرة بدار الحكمة 2015أكتوبر 24السبت
ســيف عـفيـفي محـمد / دكتـور معهد بحوث صحة الحيوان
المعمل المرجعي للرقابة على االنتاج الداجني (جمصة ) مدير معمل الدقهلية
Trainer:
• Participants:
• Day Goals:
• Subjects to talk about:
( Diseases, Farm Biosecurity, Vaccination, Diagnosis )
Dr. Mohamed Saif, PhD
AHRI- NLQP , Gamasa lab. Director & Tech. Manager [email protected] [email protected] 01063632662
Poultry Diseases
Avian Influenza
• Orthomyxovirus- A
أنفلونزا الطيور أعراض واألرجلت ايزرقان العرف و الدال - (النفوق)الموت المفاجئ - عدم القدرة على الحركة -اعراض عصبية - تورم الرأس والجفون والعرف و والداليات -
نقط نزفية على الدهون القلب التهاب دموى فى القصبة الهوائية نقط نزفية على الدهون
نقط نزفية على غشاء االمعاء خطوط نزفية على المعدة نقط نزفية على الدهون القلب
أنزفة على المبيض نقط نزفية على البنكرياس نقط نزفية على العضالت
نفلونزا الطيورأل الصفة التشريحية
• Diagnosis
• Prevention
• Control
https://www.youtube.com/watch?v=B5aPHnNAVCA
انفلوانزا الطيور د محمد سيف بقناة مصر الزراعية 9 ديسمبر
2014
Newcastle disease
• Notifiable disease !
• Avian paramyxovirus (serotype 1, 8 genotypes)
• different pathogenity (v, m, l, a)
• chicken, pheasant, turkey, pigeon, wild birds (water fowl)
• Sensitivity: 56 °C - 3 min pH 3 - 3 min disinfectant
Examples Of ICPI Of Several NDV Isolates
Virus Product ICPI
Ulster 2C Poulvac NDW 0.04 to 0.23
PHY.LMV.42 Cevac® VITAPEST L 0.16
Hitchner B1 Many 0.18
Clone 30 Nobilis® ND Clone 30 0.25
VG/GA AVINEW® 0.30
La Sota Many 0.4
Komarov 1.41
• Clinical signs: respiratory disease enteritidis nervous signs marked drop in egg production
• Pathology: – haemorrhages on seromembranes,
on mucosal membranes (proventriculi, small intestine, ceca, -lymphoid tonsils -, trachea, pharynx)
– enteritidis
– diphtheriod inflammation on lymphoid tonsils on pharynx
• Isolation of virus (pathogenicity)
• Prevention / Vaccination
• Differential diagnosis (septicaemia, CRD, IBD, ILT, IB, Fowl pox, pneumovirus, coccidiosis, mycotoxicosis)
Fowl pox
• Poxviridae, Avipox
• Sensitivity: 50°C heating 30 min 60°C 8 min in dry scabs for months/years pH 5-9 resistant
• cutaneous form nodular (proliferative) lesions on the comb, wattle, eyelids, other non feathered areas
• diphtheroid form nodules on mucosal membranes of pharynx, trachea, oesophagus
• special histopathological changes (cytoplasmic inclusion body)
Infectious Laryngotracheitis
• Herpesvirus
• Sensitivity: mild (halogen-detergents + iodophors, heating, but (-18° C-25° C !)
• Acute respiratory disease
• Conjunctivitis Laryngitis Tracheitis (Histopathology: intranuclear inclusion body in epithelial cells by 3 day PI)
Infectious bronchitis
• Coronavirus
• Sensitivity: 56°C 15 min at room temperature 2-3 days common detergents destroy
• Pathology: acute catarrhal tracheitis, bronchitis sinusitis, air sacculitis local pneumonia
• nephritis, salpingitis (eggs !)
Infectious bursal Disease (Gumboro Disease)
• Birnavirus
• Bursa Fabricius (B lymphoid cells) immunosuppression !
• Sensitivity: very stable virus! 60-70°C -30 min 0.5 % chloramines 10 min invert soap + 0,05 sodium hydroxide
• Pathology: haemorrhages in muscles (legs, breast) on mucosal membrane of proventriculi on lymphoid tonsils of intestine oedema and haemorrhageous inflammation of bursa Fabricii
• Diff. diagnosis: Newcastle disease mycotoxicosis
• Prevention: vaccination, hygiene
Marek’s Disease
• Herpesvirus (cell associated virus)
• Sensitivity:
• Pathogenity: „classical” form (lesions in peripheral nerves) tumoral form (lymphoid tumors in different organs or in skin) transient paralysis
• Differential diagnosis: Newcastle disease leucosis tumors
Parasites / Protozoa Coccidiosis
• Eimeria tenella Eimeria necatrix Eimeria acervulina Eimeria truncata
• Chicken, turkey geese
• Anticoccidial drugs /vaccination
• immunsuppressive diseases (Marek’s disease, CAV, Gumboro disease, Reo, mycotoxines…)
• Haemorrhagic enteritis (clotted blood - fibrinous inflammation) in caecum in small intestines
• renal coccidiosis (enlarged, yellow-greyish kidneys)
Fungal infections
Aspergillosis
• Aspergillus fumigatus Aspergillus flavus Penicillium Mucor
• Respiratory disease pneumonia (granulomes) air sacculitis, peritonitis
• Litter, feed (toxins)
• (Antibiotics contraindicated!)
In these cases poultry meat is partial condemned for human consumption
(the effected areas are condemned:
- parenchymal orgams
- intestines
- skin + muscles /breast, legs/ )
Bacterial Diseases • Salmonellosis
• Colibacillosis
• Infectious Coryza
• Fowl Cholera
+ Mycoplasma and CRD, CCRD