Abstract: The present invention relates to a therapy for treating or preventing several diseases in animals, based on the administration of a highly concentrated avian derived immunoglobulins formulation, obtained from the egg yolk from hens previously hiper-immunized with a vaccine formulation comprising infectious agents or toxins antigens, a light mineral oil and a particulate adjuvant.

Abstract: The invention refers to anticoccidial compositions consisting mainly of yolk immunoglobulins derived from eggs of hens immunized with one or more Eimeria species. The invention refers also to the use of said anticoccidial compositions for prevention or treatment of coccidiosis. The administration of immunoglobulins, both in liquid as well as in powder or pellet presentation, decreases mortality, lesions, oocysts counts and increases weight gain of receiving animals.

Abstract: The instant invention relates to the use of immunoglobulins obtained from the egg yolk of hens hyperimmunized with PRRS virus. The immunoglobulins are obtained through the extraction of the aqueous phase of the yolk through the use of hydroxypropylmethylcellulose phtalate at a final concentration of 0.05% and sodium azide at a final concentration of 0.001%. The invention also relates to the administration of these immunoglobulins for the prevention and treatment of pigs infected with the PRRS virus in order to lower mortality rates, obtain weight gain and diminish viral excretion in the herds.