Gce Model Questions Vol1 2025 Agricultural Science Question 9

Practice essay / theory question 9 from the 2025 Gce Model Questions Vol1 Agricultural Science examination. This question covers Animal Diseases, Livestock Health Management .

Gce Model Questions Vol1 2025 Agricultural Science Essay / Theory
Topics: Animal Diseases Livestock Health Management
Question 9 GCE_MODEL_QUESTIONS_VOL1 • 2025 • AGRICULTURAL_SCIENCE • essay

A mixed livestock farm in northern Nigeria keeps a herd of 200 dairy cattle. Over the past year the farm recorded an incidence of Bovine Viral Diarrhoea (BVD) of 12 % among the herd. Infected cows produced on average 15 % less milk than healthy cows. The average daily milk yield of a healthy cow is 20 L. The market price of milk is ₦150 per litre.

Question Parts

( a )
Identify three major viral diseases of cattle that occur in Nigeria. For each disease state the causative agent and list at least two characteristic clinical signs.
( b )
For Bovine Viral Diarrhoea, describe its transmission cycle, emphasising the role of persistently infected (PI) animals. Recommend two practical control measures that are feasible for small‑holder dairy farms.
( c )
Using the data supplied, calculate the total annual milk loss (in litres) attributable to BVD in the herd. Show all steps of your calculation.
( d )
Estimate the monetary loss from the reduced milk production over a 365‑day year, using the given milk price. Briefly discuss how such losses affect the farm’s profitability and suggest one management practice that could mitigate the impact.

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About This Question

This is Gce Model Questions Vol1 2025 Agricultural Science Question 9. It is one of the essay questions from the 2025 Gce Model Questions Vol1 Agricultural Science examination.

The question covers Animal Diseases, Livestock Health Management .

View More Gce Model Questions Vol1 2025 Agricultural Science Questions More Gce Model Questions Vol1 Practice Questions Back to Questions

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