J. Anim Sci.
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J. Anim Sci. 1982. 55:363-368.
© 1982 American Society of Animal Science
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Cold Exposure and Absorption of Colostral Immunoglobulins by Neonatal Pigs1,2,

Keith W. Kelley, Frank Blecha3 and Jeffery A. Regnier4

Washington State University,5, Pullman 99164

Abstract

To investigate the effect of cold exposure on absorption of colostral immunoglobulins, 56 piglets were weaned at birth and placed in either a thermoneutral (35 C) or cold (21 C) environmental chamber. Thermoneutral piglets had a survival rate of 62% at 48 h, but survival among cold-exposed piglets was only 36% (P<.10). Cold air reduced (P<.01) rectal temperature by more than 6 C after 24 h of exposure. A constant amount of bovine colostrum was administered orally at 4 h after initiation of thermal treatments. Bovine immunoglobulin G1 (IgG1) was readily absorbed and reached a serum level of 17 mg/ml after 24 h. Bovine IgM also was absorbed and increased to approximately 2 mg/ml at 24 h. However, absorption of colostral IgG1 and IgM was not affected by cold exposure. Cold air increased (P<.05) incidence of diarrhea by over five fold after 72 h, and severity of diarrhea was nearly doubled (P<.01). Hematocrit was also higher (P<.05) in cold-exposed piglets. These data demonstrate that a cold stressor sufficient to induce hypothermia does not impair absorption of colostral macromolecules in piglets. However, cold exposure was related to increased incidence and severity of diarrhea.

Footnotes

1 Scientific Paper No. 6130, College of Agr. Res. Center, Washington State Univ., Projects 0344 and 0492.

2 Partially supported by grants from the National Pork Producers Council and Moorman Mfg. Co., Quincy, IL 62301.

3 Present address: Dept. of Anat. and Physiol., College of Vet. Med., Kansas State Univ., Manhattan 66506.

4 Present address: Dept. of Vet. Microbiol. and Pathol., College of Vet. Med., Washington State Univ., Pullman 99164.

5 Dept. of Anim. Sci.






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Copyright © 1982 by the American Society of Animal Science.