We added 0, 120 or 240 mg/kg of beta-carotene to breeder hen diets for six weeks, and then the eggs were collected and incubated. Selected post-hatch male chicks were fed the same chick basal diet for
Morphology observations and basic biomarker concentration determination could only reveal the basic physio-pathological process of gastric defect closure, but the underlying mechanisms remained a blac
The misuse of antibiotics leads to the development of antimicrobial resistance in bacteria, and the production of resistance genes causes damage to the environment. Therefore, there is an urgent need
