Storage solutions for feed should minimize spoilage and wastage.

As a rule of thumb, if you intend feeding expensive ingredients, it is worth spending money on an appropriate storage system. Easy access for feed-out machinery and cleaning is critical. Remember that feed storage areas can leak so ensure the drainage system is adequate.

Open air, piled storage

Useful for short term storage but not a good solution long term – too hard to keep feed dry and rates of loss due to wind is high.

Low cost bunkers

Low cost bunkers can be made cheaply from square straw bales or wooden sleepers. Contamination can occur with stones and soil if feed is loaded directly onto dirt.

Concrete bunkers

Cement bunkers are the most expensive option but minimise wastage, and if designed well, drain well. Adjacent bunkers reduce the number of walls required.

Soil ramps next to the bunker aids discharge from trucks. Ensure floor slope aids drainage.

Covered bunkers

Bunker roofs should be high enough to allow sufficient working space for front end loaders and for unloading semi-trailers. Eaves could be considered to provide protection from rain.

Bunker dimensions for storing semi-trailer delivery loads

DeptWidthWall heightWall thinknessConcrete apron
6 – 10 m4 – 6 m1.5 – 2.5 m150 – 200 mm5 – 7 m in front of each bunker
Source: Moran & McDonald, 2010