Response of early weaned pigs to an escherichia coli challege and their absorption to ovalbumin or xylose as influenced by creep feeding
<p>The effect of exposure to creep feed at 10 d of age vs no exposure to creep feed or sowâ s feed on the ability of pigs weaned at 21 d of age to respond to an oral challenge of E. coll or to absorb ovalbumin or xylose was investigated. Eighty pigs (45 exposed, 35 control) were orally c...
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| Format: | Others |
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Virginia Tech
2014
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| Online Access: | http://hdl.handle.net/10919/44679 http://scholar.lib.vt.edu/theses/available/etd-09082012-040501/ |
| Summary: | <p>The effect of exposure to creep feed at 10 d of age vs
no exposure to creep feed or sowâ s feed on the ability of
pigs weaned at 21 d of age to respond to an oral challenge
of E. coll or to absorb ovalbumin or xylose was
investigated. Eighty pigs (45 exposed, 35 control) were
orally challenged 24 h after weaning with 3x1011 organisms
of E. coli (0157 H88AC:H43); control pigs tended (P<.10) to
scour more than the exposed pigs (46% vs 27%). Ovalbumin
absorption was similar for both exposed and control pigs
(P>.10), but absorption for both treatments increased
(P<.001) from d 1 to d 4 and decreased to d 13 (P<.001).
Xylose absorption was less (P<.02) at d 1 for exposed pigs
compared with control pigs (0.781 vs .825 mmol) with no
differences (P>.20) occurring thereafter. Lowest xylose
absorption for both treatments occurred on d 7. Creep
feeding conferred some protection to the E. coll challenge,
but had little effect on intestinal absorption of ovalbumin
and xylose.
</p> === Master of Science |
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