Isifo saseNewcastle

1 Isishwankathelo

Isifo saseNewcastle, esikwabizwa ngokuba sisibetho senkukhu yaseAsia, sisifo esiqatha, esosulela kakhulu kwaye siyingozi kakhulu kwiinkukhu kunye ne-turkeys esibangelwa yiparamyxovirus.

Iimpawu zoxilongo lweklinikhi: ukudakumba, ukuphelelwa ngumdla, ukuphefumla nzima, ilindle eliluhlaza, kunye neempawu zesistim.

I-pathological anatomy: ubomvu, ukudumba, ukopha, kunye ne-necrosis ye-digestive tract mucosa.

2. Iimpawu ze-Etiological

(1) Iimpawu kunye nokuhlelwa

Intsholongwane yesifo seChicken Newcastle (NDV) yeyohlobo lweParamyxovirus kusapho lweParamyxoviridae.

(2) Ifomu

Amasuntswana entsholongwane aqolileyo angqukuva, anobubanzi obuyi-100 ~ 300nm.

(3) IHemagglutination

I-NDV iqulethe i-hemagglutinin, edibanisa iiseli ezibomvu zegazi lomntu, inkukhu, kunye nempuku.

(4) Amalungu akhoyo

Ulwelo lomzimba, iimfihlo, kunye nokukhutshelwa kwezicubu zeenkukhu kunye namalungu aneentsholongwane. Phakathi kwazo, ingqondo, udakada kunye nemiphunga ziqulethe ezona zixa ziphakamileyo zeentsholongwane, kwaye zihlala kumongo wethambo ixesha elide.

(5) Ukwanda

Intsholongwane inokwanda kwi-chorioallantoic cavity ye-9-11 yeentsuku zenkukhu ze-embryos, kwaye ingakhula kwaye ivelise kwi-fibroblasts yenkukhu yenkukhu kwaye ivelise i-cell fission.

(6) Ukuchasa

Ayisebenzi kwimizuzu engama-30 phantsi kokukhanya kwelanga.

Ukusinda kwi-greenhouse kwi-1 iveki

Ubushushu: 56 ° C kwi-30 ~ 90 imizuzu

Ukusinda kwi-4℃ unyaka omnye

Ukusinda kwi -20 ° C ngaphezu kweminyaka elishumi

Ugxininiso lwesiqhelo lwezibulali ntsholongwane eziqhelekileyo zibulala i-NDV ngokukhawuleza.

3. Iimpawu ze-Epidemiological

(1) Izilwanyana ezisengozini

Iinkukhu, amajuba, amaphixa, iikakawuni, iipikoko, iinyamazane, izagwityi, iintaka zamanzi, amarhanisi

I-Conjunctivitis ivela kubantu emva kokusuleleka.

(2) Umthombo wosulelo

Iinkukhu ezithwala iintsholongwane

(3) Amajelo osasazo

Usulelo lwendlela yokuphefumla kunye ne-digestive tract, ilindle, ukutya okungcolisekileyo yintsholongwane, amanzi okusela, umhlaba, kunye nezixhobo zosulelo kwi-digestive tract; uthuli oluphethe intsholongwane kunye namathontsi angena kwindlela yokuphefumla.

(4) Umzekelo weziganeko

Kwenzeka unyaka wonke, ikakhulu ebusika nasentwasahlobo. Amazinga okugula kunye nokufa kweenkukhu ezisencinci aphezulu kunalawo eenkukhu ezindala.