Matenda a Newcastle

1 Mwachidule

Matenda a chitopa, omwe amadziwikanso kuti Asian chicken plague, ndi matenda oopsa, opatsirana komanso opatsirana kwambiri a nkhuku ndi turkeys chifukwa cha paramyxovirus.

Zizindikiro zachipatala: kupsinjika maganizo, kusowa chilakolako cha chakudya, kupuma movutikira, chimbudzi chobiriwira, ndi zizindikiro zowonongeka.

Pathological anatomy: redness, kutupa, magazi, ndi necrosis ya m'mimba mucosa.

2. Makhalidwe a Etiological

(1) Makhalidwe ndi magulu

Chicken Newcastle disease virus (NDV) ndi ya mtundu wa Paramyxovirus mu banja Paramyxoviridae.

(2) Fomu

Tinthu tating'onoting'ono ta ma virus ndi ozungulira, okhala ndi mainchesi a 100 ~ 300nm.

(3) Kutuluka magazi

NDV ili ndi hemagglutinin, yomwe imasonkhanitsa maselo ofiira a magazi a anthu, nkhuku, ndi mbewa.

(4) Zigawo zomwe zilipo

Madzi a m'thupi, zotuluka, ndi zotuluka m'matumbo a nkhuku ndi ziwalo zake zimakhala ndi ma virus. Zina mwa izo, ubongo, ndulu, ndi mapapo zimakhala ndi mavairasi ochuluka kwambiri, ndipo amakhalabe m'mafupa kwa nthawi yaitali.

(5) Kuchulukana

Kachilomboka kamatha kuchulukirachulukira m'kati mwa miluza ya nkhuku ya masiku 9 mpaka 11, ndipo imatha kukula ndi kuberekana pa ma fibroblasts a nkhuku ndikupanga cell fission.

(6) Kukaniza

Amazimitsa pakadutsa mphindi 30 padzuwa.

Kupulumuka mu wowonjezera kutentha kwa sabata 1

Kutentha: 56 ° C kwa 30 ~ 90 mphindi

Kupulumuka pa 4 ℃ kwa chaka 1

Kupulumuka pa -20 ° C kwa zaka zoposa khumi

Kuchuluka kwa mankhwala opha tizilombo kumapha NDV mwachangu.

3. Makhalidwe a Epidemiological

(1) Zinyama zotengeka

Nkhuku, nkhunda, pheasant, turkeys, nkhanga, nkhono, zinziri, mbalame za m'madzi, atsekwe

Conjunctivitis imapezeka mwa anthu pambuyo pa matenda.

(2) Gwero la matenda

Nkhuku zonyamula ma virus

(3) Njira zotumizira

Matenda a m'mapapo ndi m'mimba, ndowe, chakudya chokhala ndi kachilomboka, madzi akumwa, nthaka, ndi zida zimayambitsidwa kudzera m'matumbo; fumbi lonyamula ma virus ndi madontho amalowa m'njira yopuma.

(4) Chitsanzo cha zochitika

Zimachitika chaka chonse, makamaka m'nyengo yozizira ndi masika. Kudwala ndi kufa kwa nkhuku zazing'ono ndizokwera kuposa za nkhuku zakale.