Back How to rebalance your FEI

Date: 26 April 2018

In little over a decade palm kernel extract (PKE) grew from being a little-known by-product, to one of the most commonly used supplements on NZ dairy farms. The expansion and intensification and of dairying contributed to increase in sales but it was the easy accessibility of a relatively low-priced supplement that fuelled growth the most.

With Fonterra introducing penalties for farmers whose FEI exceeds 9.0 from September, now is the time to make sure that you have a feed that can help you rebalance your FEI results and get it back into theA or B zone.

Growing on-farm crops like maize is cheaper than buying in palm kernel, but it also requires some forward planning.

As palm kernel usage on farm falls, improved pasture yields coupled with a stack of maize silage, can help fill the feed deficits and keep your FEI in the A or B zone. Maize (a member of the grass family), harvested as silage is a great option because:

  1. It can be fed in high amounts. PKE will no longer be the solution for large and unpredicted feed deficits. In contrast maize silage can safely be fed at high rates in periods of large pasture deficits.
  2. It is locally grown. It is free from the biosecurity risk associated with imported feeds.
  3. It can be stored for long periods of time without a deterioration in quality. Many farmers report feeding excellent quality maize silage that is 3 or more seasons old. The key is to ensure it is well compacted, covered with a high quality cover, and the edges are sealed.
  4. It is an excellent cow conditioner. DairyNZ research has shown there is no significant difference in the amount of palm kernel or maize silage required to put on cow condition score (DairyNZ Body Condition Scoring p.49).
  5. It drives milk production. A number of the country’s leading dairy farmers are producing over 500kgMS/cow/year on pasture and maize silage.
  6. It is cost-effective. Most NZ dairy farmers can grow maize silage crops yielding 18-26 tDM/ha for 11-16c/kgDM in the stack.
  7. It is environmentally sustainable. A growing number of regional councils are looking to require consents to graze winter forage crops because they result in high nitrogen and phosphorus losses. Maize silage fed on a feed pad is one of the key ways farmers can reduce nutrient losses.

Perhaps the biggest advantage of maize is the fact that feeding rates can be altered to keep pasture residuals at optimal levels. Maize plus grass represents a winning system that is profitable and also sustainable.