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Influence of antibiotic-supplemented feed on occurrence and persistence of Salmonella typhimurium in experimentally infected swine. 1976

F Gutzmann, and H Layton, and K Simkins, and H Jarolmen

The effect of chlortetracycline given at a concentration of 220.5 g/metric ton of feed and of a combination product which supplies chlortetracycline (110.2 g/metric ton), sulfamethazine (110.2 g/metric ton), and penicilin G (55.1 g/metric ton) on the occurrence and persistence of Salmonella typhimurium in experimentally infected swine was studied. Weanling pigs (av weight, 8.2 kg) were inoculated via the feed with 10(11) colony-forming units of S typhimurium 298-1NA. An equal number of nonexposed swine given identical treatment were used as controls. Infected pigs had increased temperatures (maximal av, 41 C) for the first 4 days after infection and severe diarrhea during the first 21 days. The use of chlortetracycline and a combination product at subtherapeutic concentrations in feed did not increase the Salmonella pool or prolong the carrier state in swine. A decrease in number of Salmonella shed from swine given chlortetracycline at the concentration of 220.5 g/metric ton was observed. Significant differences did not occur in Salmonella-related deaths or in emergence of multiple antibiotic-resistant Salmonella by antibiotic selection or R factor transfer. Zoonotic transmission of the infecting Salmonella to animal caretakers was not detected.

UI MeSH Term Description Entries
D008297 Male Males
D010400 Penicillin G A penicillin derivative commonly used in the form of its sodium or potassium salts in the treatment of a variety of infections. It is effective against most gram-positive bacteria and against gram-negative cocci. It has also been used as an experimental convulsant because of its actions on GAMMA-AMINOBUTYRIC ACID mediated synaptic transmission. Benzylpenicillin,Benpen,Benzylpenicillin Potassium,Coliriocilina,Crystapen,Or-pen,Parcillin,Pekamin,Pengesod,Penibiot,Penicilina G Llorente,Penicillin G Jenapharm,Penicillin G Potassium,Penicillin G Sodium,Penicillin Grünenthal,Penilevel,Peniroger,Pfizerpen,Sodiopen,Sodipen,Sodium Benzylpenicillin,Sodium Penicillin,Unicilina,Ursopen,Van-Pen-G
D010403 Penicillin Resistance Nonsusceptibility of an organism to the action of penicillins. Penicillin Resistances,Resistance, Penicillin,Resistances, Penicillin
D002751 Chlortetracycline A TETRACYCLINE with a 7-chloro substitution. Aureocyclin,Aureomycin,Aureomycine,Biomycin,Chlorotetracycline,Chlortetracycline Bisulfate,Chlortetracycline Hydrochloride,Chlortetracycline Monohydrochloride,Chlortetracycline Sulfate (1:1),Chlortetracycline Sulfate (2:1),Chlortetracycline, 4-Epimer,Chlortetracycline, Calcium Salt,4-Epimer Chlortetracycline,Bisulfate, Chlortetracycline,Calcium Salt Chlortetracycline,Chlortetracycline, 4 Epimer,Hydrochloride, Chlortetracycline,Monohydrochloride, Chlortetracycline,Salt Chlortetracycline, Calcium
D003967 Diarrhea An increased liquidity or decreased consistency of FECES, such as running stool. Fecal consistency is related to the ratio of water-holding capacity of insoluble solids to total water, rather than the amount of water present. Diarrhea is not hyperdefecation or increased fecal weight. Diarrheas
D005243 Feces Excrement from the INTESTINES, containing unabsorbed solids, waste products, secretions, and BACTERIA of the DIGESTIVE SYSTEM.
D005260 Female Females
D000284 Administration, Oral The giving of drugs, chemicals, or other substances by mouth. Drug Administration, Oral,Administration, Oral Drug,Oral Administration,Oral Drug Administration,Administrations, Oral,Administrations, Oral Drug,Drug Administrations, Oral,Oral Administrations,Oral Drug Administrations
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000821 Animal Feed Foodstuff used especially for domestic and laboratory animals, or livestock. Fodder,Animal Feeds,Feed, Animal,Feeds, Animal,Fodders

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