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Broiler ChickensFeed Conversion RatioBovine BrucellosisSmall RuminantsHighly Pathogenic Avian InfluenzaIntestinal MorphologyBrucella MelitensisAntimicrobial ResistancePoultry ProductionMolecular CharacterizationAvian InfluenzaResistance GenesNewcastle DiseaseAntibiotic Growth PromotersEnzyme-Linked Immunosorbent AssayDairy CattleInfectious Bursal Disease VirusTotal Volatile Fatty AcidsPoultryEssential Oils