Table 8. Effects of dietary Ca concentration and source on blood electrolyte in pig (experiment 2)¹⁾

Ca level/Ca source	Low		Standard		SEM	Ca level	Ca source	Ca level × source
	CaCO3	CaCl2	CaCO3	CaCl2
Phase 1 (14 d)
pH	7.32	7.27	7.24	7.30	0.07	0.668	0.916	0.243
Na+ (mmol/L)	142.5	141.4	141.9	140.8	0.92	0.397	0.119	0.940
K+ (mmol/L)	6.23	6.31	6.76	6.20	0.36	0.430	0.361	0.221
iCa++ (mmol/L)	1.46	1.48	1.50	1.51	0.04	0.321	0.645	0.892
Cl− (mmol/L)	99.8c	101.0b	99.3c	103.4a	0.28	0.001	0.001	0.001
HCO3− (mmol/L)	31.41a	29.98b	32.45a	28.66c	0.28	0.483	0.001	0.001
BE (mmol/L)	7.61a	6.16b	7.80a	6.05b	0.12	0.701	0.001	0.095
HTC (%)	46.16a	46.33a	42.66b	42.16b	0.52	0.001	0.656	0.377
EB (meq/L)	48.91a	46.78a	49.38a	43.61b	1.01	0.076	0.001	0.020
Phase 2 (28 d)
pH	7.37	7.32	7.24	7.29	0.06	0.107	0.976	0.282
Na+ (mmol/L)	141.9	142.7	142.0	141.1	0.74	0.169	0.975	0.115
K+ (mmol/L)	6.16	5.85	6.18	5.73	0.34	0.841	0.134	0.789
iCa++ (mmol/L)	1.41	1.43	1.45	1.47	0.03	0.143	0.372	0.940
Cl− (mmol/L)	98.8c	101.7b	99.6c	103.8a	0.54	0.003	0.001	0.091
HCO3− (mmol/L)	30.21a	28.33b	31.20a	27.60b	0.53	0.743	0.001	0.033
BE (mmol/L)	7.50a	5.71b	7.45a	5.35b	0.23	0.231	0.001	0.359
HTC (%)	44.83a	45.50a	41.50b	41.00b	1.13	0.001	0.919	0.477
EB (meq/L)	49.23a	46.73b	47.75ab	42.88c	0.84	0.001	0.001	0.045

Phase 1 : Low, 0.50%; Standard, 0.60%; Phase 2 : Low, 0.40%; Standard, 0.50%.
Means with different superscripts within a row differ (p < 0.05).
BE, base excess; HTC, hematocrit; EB, electrolyte balance.