Results are presented showing the effect of dietary bloodmeal on
the porphyrin excretion of four mature normal steers.
Bloodmeal causes a higher excretion in the faeces of copro- and
chloroform soluble porphyrins. The coproporphyrin excretion of the
urine is increased but no chloroform soluble porphyrins could, however,
be detected in animals fed on bloodmeal.
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