Autumn Calving
Take a look at our standout high ACI sires, bred to bring you:
- More focus on milk volume & quality
- Strong fertility & longevity
- Lower maintenance costs
- Better udders, legs & calving ease
Autumn block-calving allows calving to align with feed availability, delivering strong winter milk yields when prices are at their best.
It’s a system built around efficiency, fertility, and sustainability.
The Autumn Calving Index is designed specifically for autumn block-calving herds, reflecting both the cost of winter milk production and the higher milk price per litre typically achieved at that time of year.
Unlike other indexes, £ACI puts more weight on milk volume (to match winter demand) while still promoting milk quality, fertility, and longevity — the key traits for profitable autumn systems.
INTRODUCING SMARTIE P
ONE OF OUR MOST POPULAR ACI SIRES – AND HE’S POLLED!
SEE HOW HE PERFORMS WITHIN ADHB’S £ACI INDEX!
CHECK OUT OUR OTHER TOP ACI SIRES
Click the bulls to view full proof
2 PROVEN SIRES IN THE TOP 15% FOR ACI
ACI IN A NUTSHELL…
Here’s what £ACI priorities:
- Promotes milk quality, with more weight on volume than the £SCI
- Places strong emphasis on fertility
- Selects for reduced maintenance cost
- Improves udder and leg health
- Places strong emphasis on longevity
- Promotes easier calving
- Improves functional type
- Feet and Legs and Udders ACI is an across breed index





















