A SUBSIDIARY OF EUROPES LARGEST FARMER OWNED BOVINE BREEDING COMPANY

Autumn Calving Sires

Autumn Calving Index (£ACI) - This category contains all sires across-breeds that are higher than £600 for ACI.


The £ACI is a new genetic index introduced in August 2018. It provides UK farmers operating an autumn block calving system, with a higher requirement for winter feeding and targeting production of around 7,500 kgs/yr, with an across-breed evaluation to highlight bulls suitable for their system. The index has been calculated on its own base and for a specific farming system; so comparison of bulls on the £PLI or £SCI list is not possible.

As with the £SCI, the index has been developed to provide an initial screen tool to ensure bulls used on farm meet specific criteria. It is then recommended specific emphasis is placed on the management traits that require attention on individual farms*. The main features of the new index are shown below.

Relative weighting of traits within £ACI

ACI chart


The £ACI:

- Promotes milk quality with more weight on volume than the £SCI
- Places strong emphasis on fertility
- Selects for reduced maintenance costs
- Improves udder and leg health
- Places a strong emphasis on longevity
- Promotes easier calving
- Protects functional type - Feet & Legs and Udders

Personalise your bull selection — Select which bulls you want to view and download from the list by ticking the box to the left of the sire name or if you want to be more specific you can select from one of the bull categories. Once you have selected your bulls by ticking the boxes, simply click on the red Send my Brochure button at the bottom of the page, and it will be emailed to you.

Drag the table horizontally to view more information.

SIRE NAME PLI TYPE MAM L&F MILK FAT % PTN % FERT TBA SEXED CONV
SPLINK 655-0.110.20.095010.250.125.63.8£5.00
PEAK TOOLATE 8040.240.670.227510.240.097.33.3P.O.A
SMARTIE P New 8741.340.741.399270.020.125.51.2 N/A P.O.A
MANTEGO 6980.40.90.158780.010.0733.1£5.00
HURLEY 6161.630.931.615020.180.034.22.4P.O.A
COVERBOY 7301.21.370.767850.110.045.52.0P.O.A
SPEEDY P 6731.021.420.395230.250.063.92.9P.O.A
FRANCESCO 7232.012.071.44230.110.167.92.4P.O.A

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