Hvornår er en bifamilie syg? Vi ved, at sygdomskim er latent tilstede i mange bifamilier. Det kan f.eks. være nosema, bipestsporer, virus og kalkyngel. At sygdomskimene er tilstede er ikke ensbetydende med, at bifamilien er syg. Bifamilien har sit naturlige forsvarssystem. Enkelte bier kan være dødeligt syge, uden at bifamilien bliver berørt af det. Men kommer bifamilien ud af sin naturlige balance, svækkes modstandskraften, og risikoen for at se synlige tegn på sygdom øges.
I temahæftet gennemgås kriterierne for og kendetegnene på en sund bigård samt en sund bifamilie. Dernæst gennemgås de enkelte sygdomme og skadevoldere, og til sidst hvilke virkemidler, biavleren har for at mindske risikoen for sygdomme i bifamilien.
Hent temahæftet Sygdomme og skadevoldere i praktisk biavl her.
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