INCUBATION PERIOD IS VARIABLE According to virulence,population and susceptible shows the variability of days. Expected,between 2-6 days in chickens.
MORBİDİTE/MORTALİTE YÜKSEKTİR Lentojenik suşlarda morbidite yüksekken mortalite önem kazanmaz Mezojenik suşlarda yine yüksek morbidite ve % 10’lara varabilecek mortalite beklenebilir Velojenik suşlarda,aşısız hayvanlarda morbidite ve mortalite % 100’e ulaşır Aşılanmış hayvanlarda bile % 30 ile 90 arasında değişen mortalite bildirilmiştir
Örnek aşı virus sujlarının virulans(ve ICPI) ve tropizm özelliklerine göre sınıflandırılması (VAN ECK ve ark., 1991 ;ALEXANDER,1998) VİRULANS AŞI VİRUSU ICPI TOPİZM Mezojenik Roakin 1,45 Respiratorik (ICPI =1 ila 2) Komarov 1,41 Respiratorik Lentojenik Lasota 0,44 Respiratorik F 0,25 Respiratorik (ICPI=0,2 İLA 0,7) VG / GA - Enterik Hitchner B1 0,2 Respiratorik Apatojenik Ulster 2C 0,04 ila 0,2 Enterik (ICPI = 0,0 ila 0,2) Phy LMV 42 0,16 Enterik
SENSITIVE SPECIES –236 bird species have been reported to be sensitive –The most sensitive are chicken. –Goose- ducks not show clinical sign,might be carrier –Turkeys are more serious spreader than chickens –Waterfowl are emit and carry lentogenic strains. –Also pigeons are endemic to lentogenic and mesogenic strains. –Nervous signs characterized in cormorant. –Many different forms consist in Pisittasins. –Nervous signs are observed in ripper birds. –Respiratory problems are discovered in ostriches.
RESİSTANT VİRUS Suspect flock;-11 C – 36 C up to 255 days, In 8 C 14 months and in freezing weather condition for years, 300 days of carcasses of bone marrow, Intensive carcass consuming dogs 22 days, In Turkey intestines until 12 months, In summer term7 days,in spring 14 days and in winter30 days have been reported to survive.
RESISTANT VİRUS In contaminated materials days, In soil 20 C,22 days, Earth worms 4-18 days, In experimental contaminated lake water have been reported to survive days.
PROPAGATION IS VERY EFFECTIVE 3-4 days after infection by feces and 3-4 weeks by droplet and feces Feed,Water,Tools,Pad,Equipment,People, Frozen meat,disposable nature of the dead, wild birds, Maggots,Mites,Rabbit,Cat- Dogs, contamination from infected breders egg shell
FASTER DISPERSION Agent, can reach in a calm air condition 50 m and the wind event 1-2 km far away.
MISTAKES RELATED WITH PRODUCERS Do not want to warning Besides poultry houses, kept broiler or laying hens Feed cats and dogs Even with next-door neighbour not to share their problems In case of problem,do not take a joint decision
MISTAKES RELATED WITH VETERINARIAN PROFILE Poultry species,age,susceptibility Factor strain,virulence Vaccination schedule Enviromental condition Secunder infections VARIABILITY FIGHT SCHEDULE
DO WE REFER TRUE? Clinical and necroscopic error Smiliar disease Business blindness Durable insistence
OTHERS To ignore,application of Gumboro hot vaccine or other immünosüpressif agents Vaccination according to company-producers pressure or wrong suggestions way Failure to report under pressure of Company- Producers Do not warn, around producers
NEGATİVE EFFECTS RELATED WİTH STATE In fight main and general measures should be recommended by the Ministry and maintained under control. Epidemiological surveillance by computer and recording system should be establish. In fight diseases should be the right sort of Between science and practical disconnection should be corrected and work together.
GOVERNMENTAL… Ministry officials, field staff and producers provided co-operation to each other. All staffs beyond the fuzz behaviour must have sufficient knowledge and having discretionary Country poultry vaccination must be controlled
DURING THE EPIDEMIC NECESSITIES Do not make faster dispersion that consider evaulation of sick chickens and make them cut Do not carry sick chickens where there is no disease Every two hours collect all the dead and burn them Cleaning the rest of the coops, do not put chıicks at least 1 month. When you realize,it will be too late thus do not have any hopes from vaccination sick animals. Warn surroundings Accept,the importance of vaccination and biosecurity is equal 50% of the rate.
KÜMES TEMİZLİĞİNDE Virus;100 C’de 1dk ve 56 C’de 3 saatte inaktive olur Güneşin direkt UV ışınları 15 dk içerisinde öldürücüdür Eter,Fenoller,Formalin ve İyot’lu dezenfektanlar etkindir.
DİNLEDİĞİNİZ VEDE UYGULAYACAĞINIZ İÇİN TEŞEKKÜR EDERİM