Table 2.

Effects of live-born or stillborn on blood criteria¹

	Live-born	Stillborn	SEM	P-value
N	623	33	—	—
pH	7.45	6.98	0.01	<0.001
pCO2, mmHg	37.0	51.9	— 2	<0.001
pO2, mmHg	42.5	42.5	— 3	0.980
HCO3, mmol/L	26.5	16.9	0.37	<0.001
BE, mmol/L	2.4	–13.6	0.45	<0.001
sO2, mmol/L	72.3	54.4	1.29	<0.001
TCO2, mmol/L	27.6	18.8	0.38	<0.001
Na, mmol/L	124.7	120.5	0.61	0.004
K, mmol/L	6.9	7.8	0.16	0.004
iCa, mmol/L	1.6	1.8	0.03	<0.001
Glucose, mg/dL	38.9	126.1	— 4	<0.001
Hematocrit, %PCV	22.3	23.5	0.41	0.128
Hemoglobin, g/dL	7.6	8.0	0.13	0.094
Birth weight, g	1,282	1,148	31.4	0.019
Birth-order ranking5	0.48	0.80	0.01	<0.001
CumBI6	101	178	7.4	<0.001

¹Umbilical cord blood was collected from a total of 656 piglets (623 live-born and 33 stillborn pigs) from 43 sows (Fast Large White × PIC Landrace) immediately after birth and analyzed in a handheld iStat portable clinical analyzer (iStat Alinity, Abbott Point of Care Inc., Princeton, NJ).

²Log transformation used for analysis. Log transformed means were 3.61 and 3.95 for born alive and stillborn, respectively. SEM was 0.02.

³Log transformation used for analysis. Log transformed means were 3.75 for born alive and stillborn. SEM was 0.04.

⁴Log transformation used for analysis. Log transformed means were 3.60 and 4.30 for born alive and stillborn, respectively. SEM was 0.03.

⁵Birth-order ranking was calculated for each pig as: [(pig birth order – 1)/(total born – 1)].

⁶Cumulative birth interval for each pig born was calculated as the time (min) elapsed from the birth of first pig until birth time of the current pig.