Fertility in a high-altitude environment is compromised by luteal dysfunction: the relative roles of hypoxia and oxidative stress

Table 3 Blood gases in cycling sheep at a high altitude: The effect of supplementation with vitamins C and E

Group	P_aO₂	P_aCO₂	Hb	Sat Hb	Ht	pH
	(mm Hg)	(mm Hg)	(mg/dL)	(%)	(%)
LL	97.0±5.6^a	39.4±1.5^a	10.5±0.4^b	97.6±3.1^a	30.5±1.3^de	7.46±0.04^c
LLV	97.2±2.8^a	39.9±2.1^a	10.7±1.1^b	95.8±6.1^a	29.7±1.3^e	7.45±0.03^bc
LH	53.3±11.9^c	38.9±8.5^a	12.4±1.0^a	68.9±21.0^c	37.4±3.1^ab	7.46±0.07^bc
LHV	58.0±5.0^bc	35.4±2.4^ab	12.9±1.2^a	75.4±5.0^bc	38.8±3.6^a	7.50±0.04^ab
HH	60.3±4.2^b	34.4±3.8^b	11.7±1.2^ab	84.2±5.5^b	35.2±3.4^bc	7.51±0.03^a
HHV	60.1±4.2^b	33.3±4.1^b	11.0±1.0^b	81.5±4.3^b	33.2±3.0^cd	7.52±0.04^a

Different superscript letters indicate significant differences among groups (P<0.05, Duncan’s test). P_aO₂: arterial pressure of oxygen; P_aCO₂: arterial pressure of carbon dioxide; Hb: hemoglobin concentration: Sat Hb: saturation of hemoglobin by oxygen; Ht: hematocrit.
LL: low altitude native sheep maintained at a low altitude, without vitamin supplementation; LLV: low altitude native sheep maintained at a low altitude, supplemented with vitamins; LH: low altitude native sheep taken to a high altitude, without vitamin supplementation; LHV: low altitude native sheep taken to a high altitude, supplemented with vitamins; HH: high altitude native sheep maintained at a high altitude, without vitamin supplementation; HHV: high altitude native sheep maintained at a high altitude, supplemented with vitamins.

ISSN: 1477-7827