Technical Series

  1. News

    Read news from the DairyNZ publications Inside Dairy and Technical Series, as well as the latest media releases here.

  2. Good clover-ryegrass mix vital for a productive pasture

    With more emphasis on a ‘pasture first’ approach for restoring profitable margins on farms, clover’s vital role has taken on renewed significance.

  3. DairyNZ's post-grazing residual project - what it tells us about pasture management

    Use of supplements when there is an adequate supply of pasture in spring may lead to pasture wastage and higher than target post-grazing residuals.

  4. Pasture silage – maximising the return on your investment

    Pasture silage is an important source of supplementary feed on New Zealand dairy farms. The better the silage’s quality, the higher the milksolids (MS) production and body condition score (BCS) gain in cows.

  5. Making the right decisions with spring grazing

    Spring grazing management decisions have a crucial impact on the amount and quality of pasture grown later in the season.

  6. Nature to the rescue: Biocontrol of pasture pests

    Biocontrol of invasive exotic weeds and pests has proved highly-cost effective in New Zealand with some spectacular recent successes.

  7. Research finds most pregnancy losses occur in first week

    A new study shows that fertilisation failure and impaired embryo development in the first week are the greatest contributors to pregnancy failure, writes AgResearch senior scientist Debbie Berg.

  8. The best preparation you can do

    The dry period is an opportunity to ‘prep’ the cow for the coming lactation. General guidance is given here on what should be done, why and when.

  9. Plant breeding for the future

    How does our rate of genetic gain stack up internationally and what challenges do we face in our efforts to breed better forages?

  10. Science snapshot: does sowing rate affect persistence?

    Find out the results of DairyNZ's research into different ryegrass sowing rates in different parts of New Zealand.

  11. Channelling the right tools for flood management and runoff

    New research on 'two-stage channel' drains could be used to improve flood mitigation, water quality and ecosystem outcomes.

  12. Multiple factors inform methane reduction targets

    Find out how methane reduction targets differ from other greenhouse gas targets – and other factors in the balance.

  13. How much pasture and crop could potentially be eaten on your farm?

    A new tool dairy farmers can use to increase the amount of pasture and crop eaten by their herds, raising farm performance.

  14. Antibiotics: changing how we look after dairy cows

    Learn how to better target dairy cows for antibiotic treatments, to help halt the spread of antibiotic resistance and reduce our reliance on these drugs.

  15. N surplus shows performance

    Nitrogen leaching varies significantly depending on soil type and climate, which means it’s not a straightforward performance indicator.

  16. Science backs riparian management

    We highlight the science behind riparian management, so you have confidence in its ability to help improve water quality on your farm and its downstream environments.

  17. Aiming high with grazed forages

    A recent DairyNZ experiment examined how grazed forage dry matter can help lift milk production and profit.

  18. Genetics and liveweight gain influence heifer puberty timing

    DairyNZ’s latest research indicates an ‘age at puberty’ trait has potential to increase the rate of genetic improvement in cow fertility.

  19. Using data for mastitis detection

    On-farm technologies can measure individual cow performance and behaviour on a daily basis.

  20. Comparing cow breed for profitable grazing systems

    Cow breeds vary in their use of metabolisable energy for milk. This suggests that different cow breeds may offer farmers differing profit levels.