Make better replacement decisions earlier.
Genomic testing uses an animal's DNA to estimate her genetic merit while she is still young. It helps dairy farmers decide which heifers to keep as replacements, breed from or move on.
Farmers have little performance information when calves are young. Genomic testing helps rank them earlier, so you can decide which animals are mated to sexed semen, conventional or beef — rapidly increasing genetic gain and production efficiency.
Your samples are processed in a highly advanced, automated DNA laboratory with strict quality-control systems.
Samen NZ manages the process end to end, from sample kits through to results, so you get accurate, reliable data on your herd you can act on with confidence.
High-throughput DNA analysis with strict QC systems.
High-throughput DNA analysis with strict QC systems.
Samen NZ runs kits, submission and results.
Practical advice for your herd, not just a report.
A small tissue or hair sample is collected from each animal and matched to her ID. We send the samples to the lab for DNA analysis, and the results go through quality control and genetic evaluation before coming back to you with practical, actionable advice for your herd.
Together we work out which animals should be tested and what you need the results to answer.
Sample kits and clear collection instructions arrive ready to use.
Each sample is matched carefully to its animal ID and returned to us.
We verify the batch and submit it to the laboratory for DNA analysis.
Results pass through QC and genomic evaluation before release.
Which animals to keep, breed from, mate to sexed semen, or consider for beef.


Developed in cooperation with scientists from around the world the gNZI©, or Genomic New Zealand Index, is a reliable and accurate genomic prediction of NZAEL breeding worth, (BW) helping farmers select sires that will produce cows well-suited to the New Zealand dairy systems.
The gNZI is the most reliable tool for predicting the future performance of young sires’ offspring. gNZI has accurately predicted how international sires would rank once they get a daughter-proof here in New Zealand. Here are some examples of the gNZI in action:

A study outlining how gNZI is calculated has been published in a peer-reviewed scientific journal, the Journal of Animal Production Science.
View StudygNZI is based on several traits that are important to New Zealand farmers, including moderate size, kg of milk solids, udders, somatic cell, body condition, fertility and survival. Enabling the industry access to high-value outcross genetics, the gNZI provides the New Zealand dairy industry with reliable predictions based on genomic data. With the gNZI dairy farmers can select with confidence and drive their herds forward.
We’re here to help with any questions about our plans, pricing, or features.
Genomic testing analyses a cow's DNA to give you an accurate picture of her genetic merit, well before she's finished rearing. It helps you make informed decisions about which heifers are worth investing in.
Any dairy farmer who wants to make earlier, smarter decisions about their replacements, whether that's a small herd owner or a large-scale operation looking to fast-track genetic gain.
Samples are processed in the lab, a trusted DNA testing laboratory used by dairy farmers worldwide, with results going through quality control and genetic evaluation before they're returned to you.
Results can show ranking of potential replacements, parentage confirmation where reference DNA is available, A2 status, polled status, and relevant genetic conditions, depending on the test selected.
A small tissue or hair sample is collected from each animal and carefully matched to her ID before being sent to the laboratory for analysis.
Samen NZ provides practical advice alongside your results, helping you decide which animals to keep, breed from, mate to sexed semen, or consider for beef.
Use Genomic testing to make more informed culling and breeding decisions sooner.
Get in touch with the Samen NZ team to discuss your herd goals, and we'll organise the approved sample kits and instructions.