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Titolo:
Characterization of acute interstitial pneumonia in cattle in southern Alberta feedyards
Autore:
Ayroud, M; Popp, JD; VanderKop, MA; Yost, GS; Haines, DM; Majak, W; Karren, D; Yanke, LJ; McAllister, TA;
Indirizzi:
Agr & Agri Food Canada, Lethbridge Res Ctr, Lethbridge, AB T1J 4B1, CanadaAgr & Agri Food Canada Lethbridge AB Canada T1J 4B1 e, AB T1J 4B1, Canada Manitoba Dept Agr, Minnedosa, MB R0J 1EO, Canada Manitoba Dept Agr Minnedosa MB Canada R0J 1EO nnedosa, MB R0J 1EO, Canada Alberta Agr Food & Rural Dev, Anim Hlth Labs, Airdrie, AB T4B 2C1, Canada Alberta Agr Food & Rural Dev Airdrie AB Canada T4B 2C1 AB T4B 2C1, Canada Alberta Agr Food & Rural Dev, Edmonton, AB T6H 4P2, Canada Alberta Agr Food & Rural Dev Edmonton AB Canada T6H 4P2 B T6H 4P2, Canada Univ Utah, Dept Pharmacol & Toxicol, Salt Lake City, UT 84112 USA Univ Utah Salt Lake City UT USA 84112 xicol, Salt Lake City, UT 84112 USA Univ Saskatchewan, Western Coll Vet Med, Dept Vet Microbiol, Saskatoon, SKS7N 5B4, Canada Univ Saskatchewan Saskatoon SK Canada S7N 5B4 askatoon, SKS7N 5B4, Canada Agr & Agri Food Canada, Kamloops Range Res Unit, Kamloops, BC V2B 8A9, Canada Agr & Agri Food Canada Kamloops BC Canada V2B 8A9 ops, BC V2B 8A9, Canada Feedlot Nutr, Raymond, AB T0K 2S0, Canada Feedlot Nutr Raymond AB Canada T0K 2S0 Nutr, Raymond, AB T0K 2S0, Canada
Titolo Testata:
CANADIAN VETERINARY JOURNAL-REVUE VETERINAIRE CANADIENNE
fascicolo: 7, volume: 41, anno: 2000,
pagine: 547 - 554
SICI:
0008-5286(200007)41:7<547:COAIPI>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
RESPIRATORY SYNCYTIAL VIRUS; 3-METHYLINDOLE-INDUCED PULMONARY-EDEMA; FEEDLOT CATTLE; PNEUMOTOXIN 3-METHYLINDOLE; RUMINAL LACTOBACILLUS; REACTIVE INTERMEDIATE; INDOLIC COMPOUNDS; BOVINE LUNG; EMPHYSEMA; CALVES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
43
Recensione:
Indirizzi per estratti:
Indirizzo: McAllister, TA Agr & Agri Food Canada, Lethbridge Res Ctr, Lethbridge, AB T1J 4B1, Canada Agr & Agri Food Canada Lethbridge AB Canada T1J 4B1 Canada
Citazione:
M. Ayroud et al., "Characterization of acute interstitial pneumonia in cattle in southern Alberta feedyards", CAN VET J, 41(7), 2000, pp. 547-554

Abstract

Field data were collected over 2 consecutive years to characterize acute interstitial pneumonia (AIP) in feedyard cattle. Thirty-eight cattle with clinical symptoms of AIP were examined following emergency slaughter; 31 tallheifers) were confirmed to have AIP on the basis of gross and histologicallung pathology. The 7 without AIP, plus 17 asymptomatic penmates, were used as contemporary controls. Plasma concentrations of 3-methylindole (3MI) metabolites were higher (P < 0.001) in heifers afflicted with AIP than in the control animals, and concentrations of 3MI mercapturates in the urine were lower (P < 0.007) in affected heifers. Concentrations of 3MI adducts in lung tissue and in microsomal protein did not differ (P > 0.05) between the 2 groups, and 3MI was not detected in ruminal fluid from either group. Total ruminal bacterial numbers and populations of lactobacilli and protozoa were similar (P > 0.05) between the AIP-positive and unafflicted groups, but fewer (P < 0.05) cellulolytic bacteria were present in the positive group. Bovine respiratory syncytial virus antigen was not found in lung tissue from any of the heifers confirmed to have AIP. To our knowledge, this study isthe first to implicate 3MI metabolites as having a role in feedyard AIP. Further research is required to determine the factors responsible for the elevation in 3MI adducts in plasma and urine of feedyard cattle afflicted with AIP.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 06:43:32