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Left-side displacement of the abomasum in dairy cows at pasture
- Source :
- Australian veterinary journal. 68(4)
- Publication Year :
- 1991
-
Abstract
- SUMMARY The presentation of approximately 40 dairy cows affected with left-side displacement of the abomasum (LDA) per annum In a cattle practice in East Gippsland, Victoria provided an opportunity to conduct a survey and case-control study of the disease in a grazing environment. The study, Involving 37 dairy cows at pasture, revealed significant differences from the pattern of the disease occurring In the northern hemisphere where cows In older age groups, of larger frame size, higher production and fed high grain rations are at Increased risk. Affected cows were diagnosed over a 10-month period and represented approximately 0.06% of the dairy cow population. Most cases were diagnosed In the early lactation period. Evidence for a genetic predisposition was suggested by the discovery that one sire generated a disproportionately large number (9) of the cows with LDA. Although affected cows were average producers in their herds, being a member of a high-producing herd was a significant risk factor.
- Subjects :
- Veterinary medicine
Population
Stomach Diseases
Cattle Diseases
Ketone Bodies
Biology
Breeding
Frame size
Pasture
Abomasum
Animal science
Risk Factors
Lactation
Grazing
medicine
Animals
education
geography
education.field_of_study
geography.geographical_feature_category
General Veterinary
Sire
Age Factors
food and beverages
General Medicine
Animal Feed
medicine.anatomical_structure
Case-Control Studies
Herd
Cattle
Female
Subjects
Details
- ISSN :
- 00050423
- Volume :
- 68
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- Australian veterinary journal
- Accession number :
- edsair.doi.dedup.....0c0e3dabcbdbec2ff62cc881aae99839