Animal Health Case Study

Name:

Date:

🐄 Case Study: Dairy Cow Health Crisis

Background: Farmer Williams owns a dairy farm in Yorkshire with 120 Holstein-Friesian cows. Over the past week, he has noticed several concerning symptoms in his herd. The affected animals show reduced milk production, loss of appetite, and lethargy. The farm's veterinarian, Dr. Sarah Chen, has been called to investigate.

Observed Symptoms:

• 15 cows showing lameness in rear legs
• Reduced milk yield from 25 litres to 18 litres per day per affected cow
• Body temperature elevated to 39.8°C (normal: 38.5-39.5°C)
• Decreased feed intake
• Some animals lying down more frequently

1. Based on the symptoms described, which condition is most likely affecting the cows?

Mastitis

Lameness/hoof problems

Bovine viral diarrhoea (BVD)

Milk fever

2. Which of the following factors could have contributed to this health issue? (Select all that apply)

Poor hoof trimming practices

Wet, muddy conditions in fields

Inadequate foot bathing facilities

Genetic predisposition

Nutritional deficiencies

3. What immediate steps should Dr. Chen take during her examination?

Prescribe antibiotics immediately without examination

Examine hooves, take temperature readings, and assess mobility

Recommend culling all affected animals

Wait and monitor for another week

🔬 Diagnosis and Treatment Planning

4. Dr. Chen confirms the diagnosis as infectious lameness caused by digital dermatitis. Explain why this condition spreads rapidly in dairy herds.

5. Design a treatment plan for the affected cows. Include both immediate treatment and long-term prevention strategies.

6. Calculate the economic impact: If each affected cow loses 7 litres of milk per day for 10 days, and milk sells for £0.32 per litre, what is the total milk revenue loss for all 15 affected cows?

7. The farm implements a foot bathing system with copper sulphate solution. How often should cows pass through the foot bath, and what concentration should be used?

Frequency: _________________ Concentration: _________________

📋 Critical Analysis and Prevention

8. Evaluate the welfare implications of this health issue on the affected animals. Consider both physical and behavioural impacts.

9. Farmer Williams asks about preventing future outbreaks. Recommend three specific management practices that could reduce the risk of lameness in his herd.

1. _________________________________________________________________

2. _________________________________________________________________

3. _________________________________________________________________

10. Discuss the importance of regular health monitoring in livestock management. How does early detection benefit both animal welfare and farm economics?