Making your Bull semen selection easier...

Download our new spreadsheet and simply filter on the relevant trait columns.

Telephone your breeding adviser for assistance on 01823 430317


Our online personalised brochure service enables you to select bulls using a wide variety of traits, specific to your needs!

Download speeds will vary depending on your internet speeds - we recommend to download around 6 - 10 of your favourite bulls at a time.

Telephone your breeding adviser for assistance on 01823 430317

About Mastergen

The policy at Mastergen is to always provide the best quality genetics at the best value prices. Our average straw prices for dairy and beef bull semen are among the lowest in the UK but the genetic merit of the bulls we sell are among the highest!

With a portfolio of bulls to suit all breeders and all budgets, an expert team of breeding advisor’s all previously from Dairy Daughters and a state of the art website designed in-house specifically to make bull semen selection easier, you need look no further than Mastergen.

Our latest news


Thursday 13th January 2022

EVOLUTION FARMER TRAINING COURSE DATES 2022     2nd – 3rd February Defra approved PD & scanning course 17th February Calf care course 2nd – 4th March Defra approved AI course 16th March Advanced herdsperson course 6th April Bovine foot trimming course 25th April Advanced herdsperson course 29th June – 1st July Defra approved AI…

Anna Barnett
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Wednesday 22nd December 2021

Strengthening the cooperation in breeding, but ending the intent to merge process  Leading breeding companies in Europe have intensively investigated the synergies of cooperation including the intention to merge. This investigation has identified many synergies which, however, in the current situation cannot be fully exploited to benefit the members and customers. Therefore, the decision to…

Anna Barnett
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