Feed testing

   
​Feed quality analysis allows you to determine the value of pasture and supplementary feed, to assist in budgeting for maximum production at minimum cost.
Know the quality of feed and achieve performance targets Know the quality of feed and achieve performance targets

​Why test for feed quality?

 

To determine the amount of feed to give your animals, for maximum animal performance and the conservation of your valuable feed stocks

To achieve your targeted milk solid production, live weight gains and animal reproductive performance

To determine the quality of the feed you buy in or conserve

 

How do I sample for feed analysis?

To help ARL provide you with information on the quality of your pasture, silage and other feedstuffs, it is important to take a representative sample of the test material.
 

For fresh pasture

Sampling fresh pasture for feed quality analysis should follow the same sampling procedure as sampling pasture for nutrient analysis. (refer to Plant testing – how to test).  When sampling from conserved feed such as silage or baleage, combining a number of sub-samples will give you an “average” or representative sample.
 

For maize

 

If you are sampling at harvest particularly if you are buying or selling maize silage on a dry weight basis (i.e. kg/DM), ARL recommends that you consult with the ‘Maize Forage Trading Code of Practice’. The code has been developed by industry groups and outlines best practice for weighing, sampling and method chosen (truck, auger or scoop samples from the stack) and the level of accuracy acceptable to all parties involved

The number of samples submitted to ARL can be reduced further by sample reduction through a riffle box. ARL’s dry matter assessment is IANZ accredited with fully traceable standards as recommended by the code of practice

 

For pasture & cereal silage

 

Core samples are recommended because the edge of the silage pit or bales are likely to have deteriorated to a significant degree in comparison to the core

The silage should be ensiled for at least four weeks and preferably six weeks before sampling, for maize the sample should be ensiled for at least one week

Cut a small hole in the plastic cover of the stack (pit) or bale

Take at least 6 grab samples of about 200 grams each from various parts of the pit and combine them in the sampling bag provided.  If you are sampling bales take the grab samples from the centre of 6 bales.  Ensure that the grab samples are taken at least 30 cm into the centre of the pit or bale

If the sample is from silage currently being fed-out collect samples from silage that has only just been taken out of the stack or from a bale that has just been opened

After taking samples ensure that you tape over holes in the plastic cover using silage tape to minimise deterioration in the areas the samples have come from

 

After taking the sample

 

Press or squeeze the sample bag to remove as much of the entrapped air as possible, label and seal the bag tightly

Fill in the submission form and put the samples plus the submission form in the pre-paid courier bag and send them to ARL immediately. Store in a cool place before dispatch, any delay exposes the sample to excess heat and moisture and will affect the analysis.  Samples should not be sent to ARL after Thursday to ensure they arrive at the lab on a working day

 

Which feed analysis to select?

ARL has a number of feed analysis suites designed to meet your needs.  Simply tick the box on the feed submission form which best describes your feed stuff.
 
For further information or to make arrangements for testing please contact our Ravensdown Customer Centre on 0800 100 123 or contact ARL directly on 0800 100 668.