Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
1991-2-7
pubmed:abstractText
One and 3-day-old chicks were challenged with varying levels of Salmonella typhimurium by gavage or intracloacal administration. Chicks were killed 5 days postchallenge, and ceca were analyzed for the presence of S. typhimurium. About 100-fold fewer S. typhimurium cells were required to colonize young chicks by the intracloacal route than by gavage. It was hypothesized that the low pH of the upper gastrointestinal tract contributes to the higher levels of Salmonella required to colonize young chicks via the oral route. The pH measurements in the gizzard of freshly killed chicks were variable, but most were low enough to be bactericidal. Presence of salmonellae in the hatchery environment and the low level of cells (2 cfu) required to colonize young chicks via cloacal challenge suggest that day-of-hatch chicks may be at a high colonization risk from salmonellae in the hatchery.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0032-5791
pubmed:author
pubmed:issnType
Print
pubmed:volume
69
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1809-12
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Fifty percent colonization dose for Salmonella typhimurium administered orally and intracloacally to young broiler chicks.
pubmed:affiliation
USDA, ARS, Russell Research Center, Athens, Georgia 30613.
pubmed:publicationType
Journal Article