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M84U International


Functional and healthy cows for higher lifetime production. Mating Results on the farm of Hugo Pastors, the Netherlands.

Hugo Pastors has an amazing high production recently on the herd. The last half year the average day production for all milking cows is close to 40 kg’s a day with only two times milking a day. So the rolling herd average for 305 day production is close to 12.000 kg’s with 4,10% fat and about 3,50% protein. How has Hugo achieved this?

Hugo has been using M84U mating service and started recently as independant mating consultant at Peek & van der Kroon in the Netherlands. On September 1st, 2018 you can visit his farm to see these results by yourself.


Independent training in linear evaluation and mating software available worldwide for consultants, herdbooks or large dairy farms (>1000 cows).



Prevent for inbreeding (5 generations);
Manage genetic defects;
Fits all Breeds, incl. crossbreeding;
Based on lineair trait evaluation or pedigree mating;
Objective tool for bull selection.


Mating software M84U available for international consultants
The M84U (Mate for You) software is available for companies that want to provide a computerized individual mating service to dairy farmers.
M84U was created by Peek & van der Kroon in 2008, based on years of experience in the breeding industry and research results related to high lifetime production. M84U was developed in cooperation with UNIFORM Agri, which is the largest dairy management software provider in the world. Peek & van der Kroon is an independent breeding consultancy in the Netherlands, which offers support in bull selection and individual mating service, without any financial connection towards AI companies or semen distributors. Therefore, this program is unbiased and can work for any other breeding or consulting company outside the Netherlands and Belgium.
Maximum quality

Available in any language
M84U is based on linear evaluation of cows, and breeding values of bulls. It takes an experienced man/ woman in judging cows, who will evaluate the cows on all 19 linear traits on a 1 to 9 scale and puts the data in a hand-computer (PDA). A three generation sire stack on each evaluated cow will also be added into the program, to prevent high inbreeding levels and genetic defects.

The program will take a 5 generation sire stack into account when calculating the individual mating, as you can see in the diagram enclosed.

You can also add production information with the individual cows that needs improvement. After selecting a group of bulls within the breeding goal of the farmer, you can start making recommendations for that particular herd. There are several different setting options (for pedigree check, breeding goal, production, crossbreeding etc.) in the program, so you can make recommendations according to the wishes of the customer.
Heifers can also be mated, based on pedigree information (parent average is calculated).
Handheld supported

The program can be made available in any language so recommendations are easy to read for customers.

For more information or to get a ‘Teamviewer’ demonstration, mail or call: Peek & van der Kroon, Netherlands.
Phone Frans van der Kroon: +31 570 516 699 / phone Huub Peek: +31 183 404 988.

Email: info@peek-vdkroon.nl

M84U now available for international consultants