Blood profiles in dairy cows with displaced abomasum

Area of Science:

• Veterinary Medicine
• Animal Science
• Ruminant Physiology

Background:

• Displaced abomasum (DA) is a common metabolic disorder in dairy cows, significantly impacting animal health and productivity.
• Understanding the metabolic and inflammatory changes associated with DA is crucial for effective management and treatment strategies.

Purpose of the Study:

• To investigate blood profile differences between dairy cows with and without displaced abomasum (DA).
• To examine how blood parameters in DA cows change over time postpartum.
• To identify potential biomarkers for early detection and prevention of DA.

Main Methods:

• An observational study involving 69 DA cows and 104 healthy controls in Swedish dairy herds.
• Analysis of blood concentrations for glucose, insulin, fructosamine, nonesterified fatty acids (NEFA), β-hydroxybutyrate, cholesterol, haptoglobin, aspartate aminotransferase, glutamate dehydrogenase, and RQUICKI.
• Statistical analysis using mixed linear models accounting for herd, DA status, parity, breed, sampling time, and other diseases.

Main Results:

• DA cows exhibited higher concentrations of NEFA, β-hydroxybutyrate, aspartate aminotransferase, glutamate dehydrogenase, and haptoglobin compared to controls.
• DA cows showed lower concentrations of insulin and cholesterol, with a tendency towards reduced insulin sensitivity (lower RQUICKI).
• Most blood parameter differences remained consistent over time postpartum; 72% of DA cows had concurrent diseases.

Conclusions:

• Significant alterations in blood profiles of DA cows indicate negative energy balance, liver cell damage, and inflammation.
• Haptoglobin shows potential as a biomarker for early detection of inflammatory conditions, possibly reducing DA incidence.
• These findings enhance the understanding of metabolic disturbances in dairy cows suffering from displaced abomasum.