THE DISCLOSURE PROVIDES IMPROVED COMPOSITIONS AND METHODS FOR PASSIVE IMMUNIZATION. IN EMBODIMENTS, A COMPOSITION COMPRISING A SYNERGISTIC COMBINATION OF SPECIFIC POLYCLONAL ANTIBODIES IN A CARRIER MATRIX IS PROVIDED. THE DISCLOSURE PROVIDES EFFECTIVE, ECONOMICAL COMPOSITIONS AND METHODS FOR THE TREATMENT OF DIARRHEA AND ENTERIC INFECTIONS IN BROAD-SPECTRUM, UNDIFFERENTIATED, OR MIXED CLINICAL APPLICATIONS.