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Hemoglobin Concentration and Thermostability in Neonatal Piglets^1,2

University of Georgia, Athens 30601

Abstract

Correlation between blood hemoglobin concentration (HBC) and thermostability was estimated in domestic (DP) and wild piglets (WP) aged either 6 or 54 hours. Rectal temperature change during 90 min. in a 3 C environment (RT) was negatively correlated with HBC (i.e., the higher the HBC the less the drop in RT) in DP (r=–.65; P<.01) and WP (r=–.71; P<.01) at 6 hr. and in DP (r=–.37; P<.05), but not in WP (r=0.09; not significant) at 54 hours. RT was greater in DP with less than 8 g/100 ml than in those with higher HBC at 6 (P<.001) and 54 hr. (P<.10). From these results emerges the possibility that HBC may be a determinant of thermostability in domesticated neonatal piglets and may become especially limiting at levels below 8 g/100 ml of blood.

¹ University of Georgia Institute of Comparative Medicine Publication No. 856 and Georgia Agricultural Experiment Station Journal Series No. 1093.

² Appreciation is expressed to Drs. E. P. Warren and R. D. Scarth for their assistance with the statistical analysis.

³ Animal Science Department, University of Georgia.

⁴ Physiology Department, University of Georgia.

⁵ Medicine and Surgery Department, University of Georgia.

⁶ Animal Science Department, University of Illinois, Urbana-Champaign.