This chapter documents some of the studies on antibiotic usage in poultry farming with specific focus on some selected bacterial species, their economic importance to poultry farming and reports of resistances of isolated species from poultry settings (farms and poultry products) to essential antibiotics.Īntibiotic resistance (AR) which is defined as the ability of an organism to resist the killing effects of an antibiotic to which it was normally susceptible and it has become an issue of global interest. Poultry products are among the highest consumed products worldwide but a lot of essential antibiotics are employed during poultry production in several countries threatening the safety of such products (through antimicrobial residues) and the increased possibility of development and spread of microbial resistance in poultry settings. The use of antimicrobial agents in animal husbandry has been linked to the development and spread of resistant bacteria. It is known that worldwide, more than 60% of all antibiotics that are produced find their use in animal production for both therapeutic and non-therapeutic purposes. The levels of multi-drug resistant bacteria have also increased. Over the past few decades, no major new types of antibiotics have been produced and almost all known antibiotics are increasingly losing their activity against pathogenic microorganisms.
A surge in the development and spread of antibiotic resistance has become a major cause for concern.
