Cow Calf AI is a family run business. The Harris Family have a long history of breeding, showing and taking to market prime beef cattle, mainly Australian Shorthorns. They have farmed in the Macedon Ranges in Victoria for over 100 years.


Our team are not only qualified but highly experienced having been undertaking cattle AI and preg testing for over 15 years.


Robyn Harris has spent her entire career working with cattle, She is a qualified artificial insemination technician as well as having obtained qualifications in pregnancy testing using ultrasound.


Jillian Harris-Ryan has a Bachelor of Agricultural Sciences (Hon) from Melbourne Uni as well as post graduate qualifications in agriculture. 


Our professional team are dedicated to providing a positive outcome at every step of your herd fertility program.






Robyn Harris & Jillian Harris-Ryan
Robyn and Jill with a shorthorn bull of their own breeding.
Cattle AI
Semen straws in a nitrogen tank
Cattle Preg Testing
Heavily pregnant cow
cattle ultrasound
Ultrasound of cattle foetus
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Boggy Gate Road

Clarkefield Vic 3430



Tel: 0402 087 997


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