Heat stress affects dairy cow health status through blood oxygen availability

Table 4 Hematological parameters in coccygeal vein of dairy cows under different heat stress

Item¹	Heat stress			SEM	P-value
Item¹	No	Mild	Moderate	SEM	Treat	Linear	Quadratic
RBC, M/μL	6.05^a	5.81^b	5.37^c	0.11	< 0.01	< 0.01	0.12
HCT, %	28.0^a	28.0^a	25.9^b	0.44	< 0.01	< 0.01	< 0.01
HGB, g/L	101^a	98.2^b	91.8^c	1.44	< 0.01	< 0.01	0.13
MCV, fL	46.4^b	48.5^a	48.3^a	0.70	< 0.01	< 0.01	< 0.01
MCH, pg	16.8	16.9	17.1	0.26	0.03	0.01	0.87
MCHC, g/L	363^a	350^b	354^b	1.4	< 0.01	< 0.01	< 0.01
MPV, fL	7.34	7.45	7.29	0.13	0.07	0.45	0.03
PLT, K/μL	463^a	420^b	466^a	27.2	< 0.01	0.83	< 0.01
WBC, K/μL	16.1^a	15.9^a	13.5^b	1.29	< 0.01	< 0.01	0.03
NEU, %	47.1^b	51.1^a	47.4^b	2.69	0.04	0.88	0.01
LYM, %	43.6	40.2	44.7	2.91	0.01	0.50	< 0.01
MON, %	8.28	7.95	7.03	0.49	0.08	0.03	0.54
EOS, %	0.95	0.64	1.08	0.24	0.40	0.70	0.20
BASO, %	0.24	0.18	0.15	0.03	0.22	0.09	0.72

¹RBC Red blood cell, HCT Hematocrit, HGB Hemoglobin, MCV Mean corpuscular volume, MCH Mean corpuscular hemoglobin, MCHC Mean corpuscular hemoglobin concentration, MPV Mean platelet volume, PLT Platelet, WBC White blood cell, NEU Neutrophil, LYM Lymphocyte, MON Monocyte, EOS Eosimophil, BASO Basophil
^a–cMeans within the same row with different superscripts are different (P < 0.05)

ISSN: 2049-1891