Genetic parameters for automatically-measured vaginal temperature, respiration efficiency, and other thermotolerance indicators measured on lactating sows under heat stress conditions

Table 2 Descriptive statistics for the indicators of heat stress response in lactating sows

Trait	Mean values ± SD	Minimum	Maximum
T_ES	36.74 ± 1.07	32.50	40.70
T_SS	36.46 ± 1.08	32.30	39.80
T_RS	37.23 ± 0.92	33.60	39.90
T_TS	36.90 ± 0.95	33.20	40.00
T_Vall	39.74 ± 0.75	37.08	42.72
T_V4days	39.73 ± 0.77	37.08	42.35
T_V8h	39.16 ± 0.61	37.23	41.42
T_V12h	39.57 ± 0.64	37.08	41.78
T_V16h	40.02 ± 0.69	37.34	42.71
T_V20h	40.15 ± 0.71	37.61	42.10
T_V8hS	39.25 ± 0.59	37.42	41.42
T_V12hS	39.69 ± 0.64	37.08	41.60
T_V16hS	40.15 ± 0.69	37.34	42.72
T_V20hS	40.25 ± 0.69	37.84	41.83
RR	73 ± 28	12	172
EA	309.01 ± 53.62	183.23	487.85
EL	24.98 ± 2.81	14.83	34.34

T_ES ear skin temperature (°C), T_SS shoulder skin temperature (°C), T_RS rump skin temperature (°C), T_TS tail skin temperature (°C), T_V4all all measures (each 10 min) of vaginal temperatures during 4 days (°C), T_V4days: four time measures of vaginal temperatures during 4 days (°C), T_V8h vaginal temperature measured at 8:00 h, during 4 days (°C), T_V12h vaginal temperature measured at 12:00 h, during 4 days (°C); T_V16h vaginal temperature measured at 16:00 h, during 4 days (°C), T_V20h vaginal temperature measured at 20:00 h, during 4 days, RR (°C) respiration rate/min, EA ear area (cm²), EL ear length (cm), SD standard deviation

ISSN: 1297-9686