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. 2021 Jan 4;7(1):216–223. doi: 10.1016/j.aninu.2020.07.006

Table 2.

Descriptive statistics of environmental conditions, rectal temperature and respiratory rate in Holstein lactating cows.

Item	THI periods			P-value
Item	LTHI	MTHI	HTHI	P-value
Mean daily temperature, °C	5.11 ± 0.54^c	17.02 ± 0.28^b	32.31 ± 0.25^a	<0.001
Mean daily RH, %	80.11 ± 2.56^a	76.72 ± 1.17^ab	73.58 ± 1.56^b	0.057
Mean daily THI	42.97 ± 0.95^c	61.84 ± 0.42^b	86.09 ± 0.23^a	<0.001
Rectal temperature, °C	38.19 ± 0.05^c	38.66 ± 0.03^b	39.91 ± 0.05^a	<0.001
Respiratory rate, bpm	21.47 ± 0.61^c	38.23 ± 0.78^b	103.71 ± 1.04^a	<0.001

THI = temperature-humidity index; LTHI = low THI; MTHI = moderate THI; HTHI = high THI; RH = relative humidity; bpm = breaths per minute.

^a-c Means within a row with different superscripts differ (P < 0.05).