Lawsonia intracellularis

Această bacterie enterică provoacă diferite boli clinice, rezumate ca Enteropatie proliferativă porcină (PPE, cunoscută și ca Ileită). În întreaga lume, peste 90% din ferme se presupune că sunt infectate cu Lawsonia intracellularis, iar în cadrul acestor efective aproximativ 30% dintre porcii răniți până la sfârșit pot avea leziuni detectabile la un moment dat, ducând la pierderi economice.

Forma cronică a bolii se numește PIA (Adenomatoza intestinului porcină) și cauzează în principal scăderea medie a greutății zilnice, creșterea ratei de conversie a hranei și creșterea neuniformă a porcilor, de obicei între vârsta de 6 și 20 de săptămâni, cu sau fără diaree clinică. Alte forme clinice includ cazuri de boală hemoragică acută numită Enteropatie hemoragică proliferativă (PHE) care apare mai frecvent la porcii tineri adulți (vârstă de 4-12 luni). Animalele suferă de o diaree hemoragică acută, cu pierderi de sânge în intestin. Animalele prezintă paloare marcată și pot prezenta fecale de culoare roșie sanguină până la fecale. Doar aproximativ 50% din animale supraviețuiesc formei acute și scroafele pot să renunțe din cauza PHE.

 

Antibioticele pot fi utilizate pentru a controla impactul clinic al EIP. Cu toate acestea, datorită răspândirii lente a bolii la un grup de porci, timpul de tratament este dificil. Vaccinarea este mai frecvent utilizată și reprezintă un instrument foarte eficient pentru a controla EIP.

10 thoughts on “Lawsonia intracellularis

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