Probiotics properties of bacteria isolated from poultry in Thailand
2009
Kasornpikul, C. | Chaiyasut, C. | Sirithanyalug, B. | Aegwanich, W. | Pewnim, T.
Probiotics can be defined as single or mixed cultures of living microorganisms, which beneficially affect the host (human or animal) by improving the properties of indigenous microflora. For animal production, they are the biological products which have a capacity to improve growth performance and increase the immune system in the animals. The aims of this study were to isolate probiotics lactic acid bacteria from chicken faeces and to examine their probiotics properties for use in chickens. The samples were collected by fecal swab from 120 healthy antibiotic-free poultry between Nov 2006 and Nov 2007 in Thailand. The bacterial strains were selected based upon bio-safety, viability during storage, in vitro tolerance to different pH/gastric juice and bile, and antimicrobial activity. Subsequently, the effective strains in the laboratory were evaluated in vivo to determine their effect in promoting growth. The results revealed that CMU-FP02 and CMU-FP003 were the best in growth promotion (P0.05). It was hypothesized that this growth promotion occurred as a result of the bacteria to thrive under bile and acidic conditions. They also were capable of antagonizing the notorious microbes and excluded them from causing disease to the chickens.
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