Physiological response to hypoxia in piglets of different birth weight

Figures & data

Table 1 Blood gases, electrolytes, and glucose levels in piglets of different birth weights.

	Normal birth weight, no. 50	Low birth weight, no. 50	High birth weight, no. 50
Weight, g°	1250.6±74.7	917.8±45.0§	1518.6±116.3^ˆ
Temperature°	37.8±0.5	37.5±0.6	37.1±0.8
pH^#	7.26±0.14	7.24±0.41	7.03±0.11^ˆ
PCO2, mm Hg°	52.1±7.3	49.9±8.2	88.5±13.2^ˆ
PcO2, mm Hg°	25.8±3.5	26.9±3.8	18.8±4.7^ˆ
Lactate, mg/dL°	40.8±5.4	35.7±2.9§	89.4±26.3^ˆ
Glucose, mg/dL°	77.0±10.8	65.9±6.0	84.0±43.9
Na^+, mmol/L	135.8±3.7	136.0±3.4	134.5±3.0
K^+, mmol/L	6.5±0.5	6.6±0.5	6.3±0.7
Ca^2+, mmol/L°	1.6±0.09	1.6±0.08	1.7±0.1^ˆ
Hematocrite, %	37.1±3.8	36.8±3.8	37.5±6.8
HCO3, mmol/L	21.9±1.6	21.9±2.5	21.1±2.5

Values are means ± SD;

° ANOVA P<0.05;

# Kruskal-Wallis P=0.05;

§ normal vs low birth weight, P<0.05;

ˆ normal vs high birth weight, P<0.05.

Table 2 Influence of birth weight and gross neurophysiological parameters.

	Normal birth weight, no. 50	Low birth weight, no. 50	High birth weight, no. 50
Viability score°	8.7±0.4	7.7±0.8^#	5.4±0.6^§
Latency to first udder contact, min°	22.4±4.5	28.2±5.1^#	52.3±8.3^§

Values are means ± SD;

° ANOVA P<0.001;

# normal vs low birth weight, P<0.05;

§ normal vs high birth weight, P<0.05.