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Published online by Cambridge University Press: 22 November 2017
The prophylactic use of antibiotic (as growth promoters) in animal feeds has made intensive farming possible and improved feed conversion. In the presence of low levels of an antibiotic, resistant cells survive and grow which produces an antibiotic-resistant population. Consequently, the use of antibiotic for broilers has been limited. Therefore, a number of studies on alternative products that can aid promotion of growth, improved feed utilization, and maintenance of gut health have taken placed (Hernandez et al, 2004). Herbs and organic acid have received an increased attention as an alternative to antibiotics (Craig, 1999; Ricke, 2003). The main aim of the present research was to evaluate the efficiency of alternative antibiotic growth promoters on Ross broiler performance.