title: Competitive exclusion treatment reduces the mortality and fecal shedding associated with enterotoxigenic Escherichia coli infection in nursery-raised neonatal pigs.
abstract: We have previously reported that the administration of a competitive exclusion culture (PCF-1), derived from the cecal microflora of a young, healthy pig and maintained in a continuous flow fermentation system to neonatal pigs resulted in a decrease in the incidence of fecal shedding and cecal colonization by Salmonella choleraesuis in pigs at weaning. In the present experiment, we describe the effects of the administration of a derivative of the PCF-1 culture, RPCF, against an enterotoxigenic E. coli infection in neonatal pigs raised off-sow. The administration of RPCF at 12 and 24 hours after birth resulted in significant (P < 0.05) reductions in mortality, incidence of fecal shedding, and in gut colonization by E. coli when compared to control values. The RPCF reduced mortality from 17.5%, observed in untreated pigs, to 4.4% in RPCF-treated pigs. Fecal shedding of E. coli was reduced significantly (P < 0.05) in RPCF-treated pigs between Days 1 and 3 post-challenge. These results indicate that the RPCF culture is effective against one of the most important causes of neonatal scours (E. coli infections) in piglets.
authors.affiliation: United States Department of Agriculture, Southern Plains Agricultural Research Center, College Station, Texas 77845, USA. genovese@ffsru.tamu.edu
authors.forename: K J
authors.initials: KJ
authors.lastname: Genovese
authors.forename: R C
authors.initials: RC
authors.lastname: Anderson
authors.forename: R B
authors.initials: RB
authors.lastname: Harvey
authors.forename: D J
authors.initials: DJ
authors.lastname: Nisbet
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D000898:Antibiosis; D018929:Cell Culture Techniques; D003470:Culture Media; D004926:Escherichia coli / Q000302:isolation & purification / Q000472:pathogenicity; D004927:Escherichia coli Infections / Q000401:mortality / Q000628:therapy / Q000662:veterinary*; D005243:Feces / Q000382:microbiology; D005260:Female; D007422:Intestines / Q000382:microbiology; D008297:Male; D013552:Swine; D013553:Swine Diseases / Q000382:microbiology* / Q000401:mortality / Q000628:therapy
chemical_list: D003470:Culture Media