The Rural Voice, 1992-10, Page 45Advice
one and one-half litres/acre
(compared with 1 litre/acre of
Roundup used alone).
Where the cereal crop was
underseeded to red clover and only
annual weeds are present, clip the
field early to control the annual
weeds. This will allow sufficient
time for the red clover to regrow and
out compete these weeds. In cereals
underseeded to red clover it is better
to control bindweed and other weeds
and kill the red clover than to leave
the field.°
Rick Jefferson
Farm Management Specialist
Feeding sprouted
wheat to pigs
The nutritive value of sprouted
wheat for pigs will depend on kernel
sprout size and the proportion of
sprouted and non -sprouted kernels in
a given volume of grain. Sprouted
kernels which have roots and/or
shoots visible contain about 92 per
cent of the energy of non -sprouted
kernels.
There is no significant difference
in the energy content of non -sprouted
kernels and sprouted kernels which
are enlarged and have cracked hulls
as the only sign of sprouting. Protein
percentage increases slightly with
sprouting as energy decreases;
however, for optimum performance,
assume the protein content of
sprouted and non -sprouted wheat is
the same.
Soft winter wheat can directly
substitute for corn on a kg for kg
basis. Grind wheat -based diets
coarsely (ie. through a 4.5 to 6.4 mm
screen) to avoid dustiness and
increase palatability. Suggested
maximum inclusion rates for wheat in
pig diets are: starter diets — 400
kg/tonne (or 40 per cent); sow and
grower -finisher diets — 570 kg/tonne
(or 57 per cent).
Sprouted wheat may contain
mycotoxins (such as zeralenone and
vomitoxin) because the weather
conditions which cause sprouting also
encourage mold growth. Pig
producers who want to feed their own
wheat should check their fields for
fusarium mold before harvest. If
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OCTOBER 1992 41