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RECTAL TEMPERATURE OF VIETNAMESE POTBELLIED PIGS - Page 3 BY: LINDA K. LORD, DVM, MS; THOMAS E. WITTUM, PH.D.; DAVID E ANDERSON, DVM, MS; DALE RIFFLE; SARAH L LATHROP, DVM, PH.D.; MARGARET A LAUDERDALE, MS JAVMA, VOL. 215, NO. 3, AUGUST 1, 1999 Scientific Reports: Original Study |
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Page 1 of Article | Page 2 of Article On the basis of our results, we believe that the expected rectal temperature of potbellied pigs should be 37.6C (99.7F), which is approximately 1.0C (1.8F) lower than the lower limit of the reference range for domestic pigs. (1-3) Variations of 0.5 to 0.9C (0.9 to 1.6F) attributable to time of day and age should be expected. Although all the pigs in the farm population were neutered, we did not detect any differences in rectal temperatures between sexually intact and neutered pigs in the hospital population, or between male and female pigs in either study population. It is possible that the difference in rectal temperature between domestic and potbellied pigs relates to the difference in lineage. Domestic pigs have been genetically selected for productivity and maximal weight gain. This has resulted in large-framed, lean pigs that rapidly gain muscle mass. Potbellied pigs, however, have evolved in a different environment. They are a source of meat, manure, lard, and family income for many families in Vietnam. (9) Pigs are kept for many years, and it is not uncommon for a sow to exceed 10 parties. These pigs live on aquatic plants and rice, and have very fatty carcasses. The fat is valued in a society in which the staple human diet has traditionally been rice. These differences in productivity and environment may have caused domestic and potbellied pigs to evolve different thermoregulatory mechanisms. Further studies are indicated to determine rectal temperature differences in domestic and potbellied pigs. |
References 2. Fraser CM. The Merck veterinary manual. 7th ed. Rahway. NJ: Merck & Co Inc, 1991-966. 3. Taylor DJ. Pig diseases. 5th ed. Cambridge, UK: The Burlington Press, 1989.6. 4. SAS/STAT software: changes and enhancements through release 6.12. Cary, NC: SAS Institute Inc. 1997:573-701. 5. Radostits OM, Blood DC, Gay CC. Veterinary medicine 8th ed. London: Bailliere Tindall, 1994;15. 6. Ganong WF. Review of medical physiology. 18th ed. Stamford, Conn: Appleton & Lange, 1997; 234-235. 7. Schellengerg JRMA, Greenwood BM. Gomex P, et al. Diurnal variation in body temperature in Gambian children. Trans R Soc Trop Med Hyg 1994; 88, 431-432. 8. Strasser A. Simunek M. Seiser M. et al. Age-dependent changes in cardiovascular and metabolic responses to exercise in beagle dogs. Zentralbl Veterinarmed [A] 1997; 44, 449-460. 9. Porter V. Pigs: a handbook to the breeds of the world. Ithaca, NY: Cornell University Press, 1993; 185-189. |
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