doctor holding a syringe against the background of the poultry farm concept of antibiotics and hormones in chicken eggs

acceleration animal antibiotic aureus bacillus bacteria biology breeding cattle cereus chick chicken coli concept danger disease drug eggs exciter farm growth health hormone hormones husbandry incubator industry infections injection klebsiella lustiness malignant meat medicine microbes microflora morbific nitrates nosogenic pathogen pathogenic pneumoniae poultry quality raising requirements sanitary standards staphylococcus stock sun sunset superbugs tetracycline threat veterinary