Projecting health cost from research herds

Area of Science:

• Veterinary Medicine
• Animal Science
• Dairy Management

Background:

• Dairy herd health significantly impacts economic viability.
• Understanding cost drivers is crucial for optimizing herd management and profitability.

Purpose of the Study:

• To analyze and project dairy cow health costs based on lactation and production parameters.
• To identify key factors influencing total, mammary, and reproductive health expenditures.

Main Methods:

• Analysis of 1,999 lactations from 863 cows across three dairy herds.
• Projection of health costs categorized into mammary, reproduction, locomotion, digestion, respiration, and other.
• Statistical analysis correlating health costs with postpartum length, parity, and milk production.

Main Results:

• Highest total health costs ($67.63/lactation) observed in later lactations with extended postpartum periods and high milk yield.
• Lowest total health costs ($22.25/lactation) associated with first lactations and shorter postpartum lengths.
• Mammary cost was the largest component of total health cost, increasing with days dry.
• Reproductive costs were higher in terminal lactations and decreased with increased days dry.

Conclusions:

• Lactation stage, parity, and milk production are critical determinants of dairy cow health costs.
• Mammary and reproductive health management strategies require tailored approaches based on parity and production levels.
• Targeted interventions for high-risk groups can mitigate significant economic losses in dairy herds.