Short communication: Dipping efficiency and teat dip residues in milk using an automatic dipping system

Area of Science:

• Dairy Science
• Agricultural Engineering
• Food Safety

Background:

• Teat dipping is crucial for mastitis control in dairy cows.
• Automatic dipping systems aim to improve efficiency and consistency.
• Concerns exist regarding teat-dip residues, particularly iodine, in milk.

Purpose of the Study:

• To evaluate teat-dip residues in milk from the Apollo automatic dipping system.
• To assess the dipping performance of the Apollo system compared to manual dipping.
• To determine the iodine levels in milk post-dipping with an iodine-based teat dip.

Main Methods:

• Laboratory and field trials were conducted using the Apollo automatic dipping system with an IQ milking cluster.
• Iodine levels in milk were measured using paired samples (upstream/downstream) and sequential sampling.
• Dipping performance was assessed by observing teat coverage in a commercial dairy herd.

Main Results:

• Laboratory analysis showed a mean iodine difference of 18.9 ± 3.18 μg/kg.
• Field trials indicated a mean iodine difference of 25.1 ± 5.22 μg/kg after switching teat dips.
• The Apollo system achieved a dipping success rate of 91.6 ± 1.3%.

Conclusions:

• The Apollo automatic dipping system results in minimal iodine residues in milk, posing no food safety risk.
• The system's dipping performance is effective and comparable to manual application.
• Automatic teat dipping offers a viable and safe alternative for mastitis prevention.