Veterinary Technician National Exam (VTNE) Practice Exam

What is a common sign of rumen displacement in dairy cows?

1. Increased milk production

2. Absent heartbeats

3. Musical ping on auscultation

4. Weight gain

The correct answer is: Musical ping on auscultation

Musical ping on auscultation is a common sign of rumen displacement in dairy cows. This phenomenon occurs due to the presence of gas within the rumen or displaced stomach, which can create a characteristic sound when the abdomen is tapped or percussed. This sound is often referred to as a "ping" and is detected during a physical examination as the veterinary technician or veterinarian listens with a stethoscope. Rumen displacement typically results in abnormal gas accumulation, leading to changes in the cow's normal bodily functions. Utilizing auscultation to identify this unique musical ping allows practitioners to diagnose conditions such as left or right displaced abomasum, which is critical for determining the appropriate treatment. Other symptoms of rumen displacement may include reduced appetite, decreased milk production, and lethargy, but the musical ping specifically indicates a unique aspect of gas accumulation related to the gastrointestinal system's mechanical issues. Understanding this sound allows for timely interventions and management of the health of the dairy cow.