Introducing heifers to freestall housing

Area of Science:

• Animal Science
• Ethology
• Agricultural Engineering

Background:

• Dairy cattle housing significantly impacts animal welfare and productivity.
• Limited research exists on the behavioral adaptation of young dairy cattle to freestall housing.
• Understanding initial responses is crucial for optimizing housing design and management.

Purpose of the Study:

• To evaluate the behavioral responses of dairy heifers with no prior freestall experience upon introduction to new housing.
• To assess the impact of freestall design features, specifically head-locking and neck rails, on heifer behavior.
• To quantify changes in lying, feeding, and stall usage behaviors.

Main Methods:

• Two experiments were conducted with young Holstein heifers (3 months of age) naive to freestall housing.
• Experiment 1: Heifers transitioned from a bedded pack to freestalls with a head-locking barrier, monitoring lying and feeding times.
• Experiment 2: Heifers were introduced to freestalls with or without neck rails, observing lying time and stall occupancy patterns.

Main Results:

• Introduction to freestalls temporarily decreased lying time by 2.9-4.2 hours/day and feeding time by 46 minutes/day.
• Heifers increased lying on the barn floor outside stalls, suggesting initial difficulty using the freestalls.
• Neck rails did not affect lying time but increased standing with front hooves in the stall.

Conclusions:

• Dairy heifers exhibit significant, albeit temporary, behavioral adjustments when first introduced to freestall housing.
• Housing design elements like head-locking and neck rails influence immediate behavioral responses.
• Further research can refine freestall designs to facilitate smoother adaptation and improve animal welfare.