Lefu la Newcastle

1 Kakaretso

Lefu la Newcastle, leo hape le tsejwang e le seoa sa Asian chicken plague, ke lefu le tshwaetsanwang le matla, le tshwaetsanwang haholo la dikgoho le dikuku le bakoang ke paramyxovirus.

Likarolo tsa tlhahlobo ea bongaka: ho tepella maikutlo, ho lahleheloa ke takatso ea lijo, ho hema ka thata, mantle a matala a hlephileng, le matšoao a tsamaiso.

Pathological anatomy: bofubelu, ho ruruha, ho tsoa mali, le necrosis ea mucosa ea tšilo ea lijo.

2. Litšobotsi tsa Etiological

(1) Litšobotsi le lihlopha

Kokoana-hloko ea lefu la Chicken Newcastle (NDV) ke ea mofuta oa Paramyxovirus lelapeng la Paramyxoviridae.

(2) Sebopeho

Likaroloana tsa kokoana-hloko e holileng li chitja, ka bophara ba 100 ~ 300nm.

(3) Hemagglutination

NDV e na le hemagglutinin, e kopanyang lisele tse khubelu tsa mali tsa motho, khoho le toeba.

(4) Likarolo tse teng

Mekelikeli ea 'mele, li-excretions le litho tsa nama ea likhoho li na le likokoana-hloko.Har’a tsona, boko, spleen le matšoafo li na le livaerase tse ngata ka ho fetisisa, ’me li lula mokong oa masapo nako e telele ka ho fetisisa.

(5) Ho ata

Kokoana-hloko e ka ata ka har'a chorioallantoic cavity ea li-embryo tsa khōhō ea matsatsi a 9-11, 'me e ka hola le ho ikatisa ho likhoho embryo fibroblasts le ho hlahisa fission ea sele.

(6) Khanyetso

E tima ka mor'a metsotso e 30 tlas'a khanya ea letsatsi.

Ho phela ka har'a sethopo bakeng sa beke e 1

Mocheso: 56 ° C bakeng sa 30 ~ 90 metsotso

Ho pholoha ho 4 ℃ bakeng sa selemo se le seng

Ho pholoha ho -20 ° C ka lilemo tse fetang leshome

Metsoako e tloaelehileng ea sebolaea likokoana-hloko e bolaea NDV kapele.

3. Litšobotsi tsa Epidemiological

(1) Liphoofolo tse hlaselehang habonolo

Likhoho, maeba, pheasants, turkeys, lipikoko, partridges, likoekoe, linonyana tsa metsing, likhantsi

Conjunctivitis e hlaha ho batho ka mor'a tšoaetso.

(2) Mohloli oa tšoaetso

Khoho e nang le kokoana-hloko

(3) Likanale tsa phetiso

Mafu a phefumolohang le a tšilo ea lijo, mantle, lijo tse nang le kokoana-hloko, metsi a nooang, mobu le lisebelisoa li tšoaelitsoe ka tšilo ea lijo;lerole le marotholi a nang le kokoana-hloko a kena ka tselaneng ea ho hema.

(4) Mohlala oa liketsahalo

E etsahala selemo ho pota, haholo mariha le selemo.Sekhahla sa ho kula le ho shoa ha likhoho tse nyenyane li holimo ho feta tsa likhoho tsa khale.