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SAMPLING
It is
neither efficient nor economically feasible to test every
load of grain or forage for contaminants. However, it makes
good sense to obtain and store a representative sample of
each batch of newly purchased feed. Commonly, investigation
of suspected feed-related problems is hampered because no
representative sample is available for testing. If feed
sampling and storage is done on a routine basis and a
suspected feed-related problem occurs subsequent to the use
of a new feed, then a sample for appropriate laboratory
testing will be available. One suggestion for purchased
grains, supplements or complete feeds is to randomly sample
each batch of feed in five to ten locations and pool the
individual samples into a larger sample of two to five
pounds. The pooled sample can be placed in a paper bag or
small cardboard box, labeled and frozen. A feed tag can be
attached to the sample for future reference if needed.
Forage
samples should also be collected and stored. If multiple
bales of hay are purchased, representative samples should be
obtained from several bales and mixed together prior to
storage. Coring implements should be used if possible to
obtain representative samples, particularly from large,
round bales of hay. Most hay samples can be placed in a
labeled paper bag and kept in a dry area.
Higher
moisture samples should be frozen. Stored samples can be
discarded several weeks after the sampled feed is utilized.
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