It is very important that bull semen is thawed consistently at the right temperature.
You should always contact your Semen Provider for their actual recommendations.
Here are some examples:
- Normal semen 35-36°C (95°F) for 45 seconds
- Sexed semen 36-37°C (98°F) for 40 seconds
If the correct settings are not followed then a percentage of sperm may die long before they ever see a cow, this has even greater consequences for sexed semen and older straws.
Our new Dairymac Digital SUPERTHAW™ is designed and manufactured in the UK and based on a comprehensive list of ‘needs’ and ‘ desires’ in our discussions with farmers, Ai Technicians and Vets.
Dairymac Superthaw™ with AI Gun Warmer Lid
- Adjustable digital temperature 20-45°C
- (99% accuracy) which can be set at correct temperature for normal and sexed semen
- Built in countdown timer with buzzer – one button operation
- Gun warmer chamber – keep thawed straws and guns at a stable temperature
- Large removable straw basket
- Watertight lid with pressure relief valve
- Fully insulated flask to help retain heat
- Latest low energy use rated electronics
- Supplied with 120-220vdc & 12vdc power supplies
- CE, UL and cUL compliant



PEL 304 4 Joule output for 18 miles of wire
Heavy Duty Hand whisk
Ambic In Line Sampler
PEL 9v Strip Grazer Fencer
PEL 9v/12v Strip Grazer Fencer
Footcare Spray (500ml)
Hoof Knife Double sided Searcher
Tough Seat Cover for Tractor
PEL Fencing 4 in 1 Tool
Uniblock Settlease Lick (10kg)
Pair of Ambic Milk Filters
PEL Fencing High Powered Solar Fence 2 Joule 12miles
PEL 406 6 Joule Output for 36 miles of wire
Kamar Heat Detectors (25 pack)
Long Brush with Handle
Pigtail Insulator 6 inches
PEL 401 Unigiser 1 Joule output for 6 miles of wire
Draminski Estrous Detector 
