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O
5
Ha 29
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DAY POST ADMINISTRATION
FIGURE 1,
E
AVERAGE PERCENT OF VARIOUS SIZE SAND PARTICLES RETAINED BY COWS AFTER ORAL ADMINISTRATION.
AVERAGE PARTICLE HALF500 F ‘TIME IN GI TRACT
3
ui 200
., 100
~ 50k
cc
LW
°
AVERAGE PARTICLE
RETENTION IN GI TRACT
<I
a
DAYS
FIGURE 2.
HALF-T!IMES AND RETENTION TIMES FOR VARIOUS SIZE
SILICA-SSAND PARTICLES IN THE DAIRY COW GI TRACT.
158