Document Detail


Haemorrhagic syndrome of cattle associated with the feeding of sweet vernal (Anthoxanthum odoratum) hay containing dicoumarol.
MedLine Citation:
PMID:  6194608     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
An outbreak of a haemorrhagic diathesis in cattle fed home produced hay is described. A similar syndrome was reproduced experimentally in calves by feeding them the hay. The experimental disease was characterised by increased prothrombin and partial thromboplastin times while the leucocyte and erythrocyte counts remained normal until the terminal haemorrhage. The calves ate well and grew well until the rapid onset of progressive weakness, stiff gait, mucosal pallor, tachycardia, tachypnoea and haematomata ending in sudden death. The absence of blood coagulation was seen at necropsy while petechial, ecchymotic and free haemorrhages were found in most organs. Particularly striking were massive ecchymotic haemorrhages on the peritoneal surface of the rumen, a bloody, gelatinous mass enveloping each kidney and extensive bruising, haemorrhage and haematomata in the subcutis of the limbs. In a second feeding trial the effects of various preparations of vitamin K1 and vitamin K3 were investigated. Oral administration of large quantities of vitamin K1 reduced the elevated prothrombin time; vitamin K3 acted less consistently. Analysis of the hay for trichothecene mycotoxins was negative but floral analysis revealed that sweet vernal grass (Anthoxanthum odoratum) comprised about 80 per cent of the hay. Dicoumarol was detected in the hay and in the serum and ruminal contents of the experimental calves. The diagnosis, treatment, control and importance of this syndrome in the United Kingdom are discussed.
Authors:
D G Pritchard; L M Markson; P J Brush; J A Sawtell; P A Bloxham
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  The Veterinary record     Volume:  113     ISSN:  0042-4900     ISO Abbreviation:  Vet. Rec.     Publication Date:  1983 Jul 
Date Detail:
Created Date:  1983-11-23     Completed Date:  1983-11-23     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0031164     Medline TA:  Vet Rec     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  78-84     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animal Feed / analysis,  poisoning*
Animals
Cattle
Cattle Diseases / chemically induced*,  diagnosis,  epidemiology
Dicumarol / analysis,  poisoning*
Disease Outbreaks / veterinary*
Female
Great Britain
Hemorrhagic Disorders / chemically induced,  diagnosis,  epidemiology,  veterinary*
Plant Poisoning / diagnosis,  epidemiology,  veterinary*
Prothrombin Time / veterinary
Syndrome / veterinary
Vitamin K / pharmacology
Chemical
Reg. No./Substance:
12001-79-5/Vitamin K; 66-76-2/Dicumarol

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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