Irrational usage of antibiotic feed additives in livestock industry, especially as growth
promoters, has become a global challenge due to the unintended zoonotic impact through
resistance transfer. Herbal plant extracts or their secondary metabolites with antimicrobial
properties may possess similar effects of various antibiotic feed additives in impeding the
pathogenic microbial growth and enhancing the health, growth, and production
performance. Majority of the calf-plant extract associated research works were primarily …