|Cox, Nelson - Nac|
Submitted to: American Society of Animal Science Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 7/15/2000
Publication Date: N/A
Technical Abstract: Competitive exclusion treatment of chickens, as first described by Nurmi and Rantala in 1973, has primarily been used to control intestinal colonization of broilers by salmonellae. Stern described the process for making a competitive exclusion product derived from the mucosal scrapings of pathogen-free adult broiler chickens (MCE). The process for making MCE was issued (US Patent #5451400) in 1995 and was licensed for developing a commercial product by the ContiGroup Companies, Inc. 1996. This commercial product is now called Mucosal Starter Culture (TM) [MSC(TM)]. The results of numerous field trials studying the efficacy of MSC to reduce salmonellae on the processed broiler carcasses provided data to indicate that MSC treatment can significantly reduce the incidence of salmonella by 9-92% in the flocks of broilers and by 4-31% on the processed carcasses. Chen (1997) showed that MSC can increase the average body weight of broilers (3%) under experimental conditions simulating commercial settings. Studies to assess the effects of MSC on production performance were conducted in USA, Japan, and Brazil. The results indicated that broiler bird mortality was decreased 0.5 -1%, average live weight increased by 0.7 -2.9%, average carcass weight increased by 3% and the feed conversion ratio was reduced by 1-3.3%. In conclusion, MSC treatment provides significant benefits in controlling Salmonella and in enhancing production parameters under standard commercial practices.