Antibiyotikler hormonlar gibi büyümeyi doğrudan uyaran maddeler değil. Tavukların büyümesini dolaylı olarak destekliyor.
Antimicrobial Growth Promoters
Antimicrobial growth promoters (AGPs) are antibiotics added to the feed of food animals to enhance their growth rate and production performance. The mechanism by which AGPs work is not clear. AGPs reduce normal intestinal flora (which compete with the host for nutrients) and harmful gut bacteria (which may reduce performance by causing subclinical disease). The effect on growth may be due to a combination of both fewer normal intestinal flora and fewer harmful bacteria.wwwnc.cdc.gov
According to the National Office of Animal Health (NOAH,
2001), antibiotic growth promoters are used to “help growing
animals digest their food more efficiently, get maximum benefit from
it and allow them to develop into strong and healthy individuals”.
Although the mechanism underpinning their action is unclear, it is
believed that the antibiotics suppress sensitive populations of bacteria
in the intestines. It has been estimated that as much as 6 percent of the
net energy in the pig diet could be lost due to microbial fermentation
in the intestine (Jensen, 1998). If the microbial population could be
better controlled, it is possible that the lost energy could be diverted
Antibiotic resistance apayrı bir şey ve büyüme ile bir ilgisi yok.