I-Chicken Egg Laying Decline Syndrome

I-Chicken egg-laying syndrome sisifo esosulelayo esibangelwa yi-avian adenovirus kwaye ibonakaliswe ngokuhla kwesifo.izinga lemveliso yeqanda, enokubangela ukuhla ngokukhawuleza kwesantya sokuveliswa kweqanda, ukunyuka kwamaqanda athambileyo kunye namaqanda akhubazekileyo, kunye nokukhanya kombala wamagobolondo amdaka.

Iinkukhu, amadada, amarhanisi kunye ne mallards zisesichengeni sesi sifo, kwaye ukuba sesichengeni seentlobo ezahlukeneyo zeenkukhu kwisifo sokuzala kwamaqanda kuyahluka, kwaye inkukhu ezalayo enamaqokobhe amdaka ingawona achaphazeleka kakhulu. Esi sifo sihlasela kakhulu iinkukhu eziphakathi kweeveki ezingama-26 ukuya ku-32 ubudala, kwaye asixhaphakanga ngaphezu kweeveki ezingama-35 ubudala. Iinkukhu ezincinci azibonakalisi zimpawu emva kosulelo, kwaye akukho antibody efunyenweyo kwiserum, ethi ibe positive emva kokuqala kwemveliso yamaqanda. Umthombo wokosulelo lwentsholongwane ikakhulu ziinkukhu ezigulayo kunye neenkukhu ezithwala intsholongwane, amantshontsho awosuleleke nkqo, kunye nokudibana nelindle kunye nokuphuma kweenkukhu ezigulayo nazo ziya kosuleleka. Iinkukhu ezosulelekileyo azinampawu zeklinikhi ezicacileyo, iiveki ezingama-26 ukuya kwezingama-32 ubudala zizalela izikhukukazi izinga lemveliso yeqanda ngequbuliso lehla nge-20% ukuya kwi-30%, okanye nokuba yi-50%, kunye namaqanda anamaqokobhe abhityileyo, amaqanda aneqokobhe elithambileyo, amaqanda angenaqokobhe, amaqanda amancinci, iqokobhe leqanda elinomphezulu orhabaxa okanye iqanda lalilungile le-granular (i-sandpaper-like), iqanda elimhlophe elimhlophe njengokukhanya okumhlophe, iqanda elimhlophe elixutywe namanzi angaphandle, iqanda elimhlophe njengokukhanya okumhlophe, iqanda elimhlophe elimhlophe. Izinga lokuqhama kunye nesantya sokuqandusela amaqanda abekwe ziinkukhu ezigulayo ngokuqhelekileyo alichaphazeleki, kwaye inani lamantshontsho abuthathaka linokwanda. Ikhosi yesi sifo inokuthatha iiveki ezi-4 ukuya kwezili-10, emva koko izinga lemveliso yeqanda lomhlambi linokubuyela esiqhelweni. Ezinye zeenkukhu ezigulayo zisenokubonakalisa iimpawu ezifana nokuswela umoya, isithsaba esimhlophe, iintsiba ezivuthukileyo, ukungakwazi ukutya kunye nesisu segazi.

Ukhumbula ukwaziswa kwabalimi abasuka kwiindawo ezingosulelwanga, imihlambi yokufuya ekwazisiweyo kufuneka ibekwe yodwa ngokungqongqo kwaye igcinwe kwindawo yodwa, kwaye uvavanyo lwe-hemagglutination inhibition (uvavanyo lwe-HI) kufuneka lusetyenziswe emva kokubeka amaqanda, kwaye kuphela abo bane-HI negative abanokugcinwa ukuze bafuywe. Iifama zeenkukhu kunye neeholo zokuqhafaza zizalisekisa ngokungqongqo iinkqubo zokubulala iintsholongwane, nikela ingqalelo ukugcina ibhalansi ye-amino acids kunye neevithamini ekudleni. Kwiintsuku ezili-110 ukuya kwezili-130 iinkukhu ezindala kufuneka zigonywe ngesitofu sokugonya esingasebenziyo se-oyile.