Technical note: Calibration of a simple udder volume measurement technique

Area of Science:

• Veterinary Science
• Animal Husbandry
• Dairy Production

Background:

• Accurate measurement of udder volume is crucial for assessing mammary function and milk production in dairy cows.
• Existing methods for determining udder volume can be time-consuming, expensive, or require specialized equipment.

Purpose of the Study:

• To develop and validate a simple, cost-effective technique for measuring udder volume in dairy cows.
• To characterize empty udder volume (EUV) and its relationship with milk yield and calving number in a dual-purpose herd.
• To estimate mammary parenchyma productivity using the developed udder volume measurement technique.

Main Methods:

• A novel technique using aluminum foil was developed to measure empty udder volume (EUV) and full udder volume (FUV) in dairy cows.
• The technique was calibrated by comparing calculated milk volume (FUV - EUV) with actual milk yield.
• The relationship between EUV, calving number, and milk yield was analyzed in 24 lactating cows.

Main Results:

• A strong linear relationship was found between actual milk volume and calculated milk volume (R2 = 0.949).
• The developed technique provides a precise estimation of udder volume, with actual milk volume = 0.718 + 0.954 * (Calculated milk volume).
• Estimated mammary parenchyma productivity was determined to be 1.85 +/- 0.117 ml/L of EUV.

Conclusions:

• The aluminum foil technique is a quick, cheap, and precise method for measuring udder volume in dairy cows.
• This method can be used to characterize EUV and estimate mammary parenchyma productivity, aiding in dairy herd management.
• The technique offers a practical alternative for researchers and practitioners in animal science and dairy production.