Title | Acute interstitial pneumonia in feedlot cattle: effects of feeding feather meal or vitamin E. |
Publication Type | Journal Article |
Year of Publication | 2007 |
Authors | Stanford, K, McAllister, TA, Ayroud, M, Bray, TM, Yost, GS |
Journal | Can J Vet Res |
Volume | 71 |
Issue | 2 |
Pagination | 152-6 |
Date Published | 04/2007 |
ISSN | 0830-9000 |
Keywords | Acute Disease, Alberta, Animal Feed, Animals, Cattle, Cattle Diseases, Feathers, Female, Glutathione, Lung, Lung Diseases, Interstitial, Vitamin E, Vitamins |
Abstract | We evaluated the effects of feeding 1.5% cysteine-rich feather meal or 550 IU of vitamin E for 40 d before slaughter on the rates of death and emergency slaughter due to acute interstitial pneumonia (AIP) in commercial feedlots. Blood and lung tissue were collected at slaughter from 83 animals clinically diagnosed with AIP, 40 asymptomatic penmates, and 40 heifers receiving either feather meal (20) or vitamin E (20); the left lung was subsampled for histologic examination. Blood and lung tissue were analyzed for thiol adducts of 3-methyleneindolenine (3ME) and reduced glutathione. Supplementation with feather meal or vitamin E had no effect on the rates of death and emergency slaughter attributable to AIP and did not influence the levels of 3ME or reduced glutathione in blood or lung tissue. Although supplementation with greater amounts of feather meal or vitamin E may have been necessary to significantly affect factors related to feedlot AIP, increased supplementation would be uneconomical for commercial feedlots, given the relatively low incidence of AIP. |
Alternate Journal | Can J Vet Res |
PubMed ID | 17479779 |
PubMed Central ID | PMC1829179 |
Grant List | R01 HL013645 / HL / NHLBI NIH HHS / United States HL13645 / HL / NHLBI NIH HHS / United States |