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

Table 4 Estimates of additive genetic variance, heritability (± SD), repeatability, and accuracy for each trait measured on lactating sows under heat stress conditions

Trait	Additive genetic variance	Heritability ± SE	Repeatability	Accuracy
T_ES	0.0313	0.04 ± 0.01	0.10	0.60 ± 0.07
T_SS	0.0446	0.06 ± 0.01	0.21	0.58 ± 0.07
T_RS	0.0290	0.06 ± 0.01	0.22	0.59 ± 0.07
T_TS	0.0298	0.05 ± 0.01	0.18	0.59 ± 0.07
T_Vall	0.0620	0.15 ± 0.02	0.37	0.66 ± 0.07
T_V4days	0.0619	0.22 ± 0.03	0.57	0.58 ± 0.06
T_V8h	0.0633	0.23 ± 0.03	0.59	0.57 ± 0.07
T_V12h	0.0767	0.24 ± 0.03	0.56	0.60 ± 0.07
T_V16h	0.0699	0.19 ± 0.02	0.52	0.55 ± 0.07
T_V20h	0.0631	0.20 ± 0.04	0.54	0.55 ± 0.07
T_V8hS	0.0686	0.25 ± 0.05	–	0.52 ± 0.07
T_V12hS	0.0934	0.29 ± 0.05	–	0.56 ± 0.07
T_V16hS	0.0771	0.22 ± 0.03	–	0.49 ± 0.07
T_V20hS	0.0778	0.22 ± 0.03	–	0.55 ± 0.07
RR	33.590	0.06 ± 0.01	0.19	0.61 ± 0.07
PS	0.0106	0.05 ± 0.01	0.16	0.47 ± 0.07
R_eff	0.0001	0.03 ± 0.01	–	0.30 ± 0.10
BCS_Cal	3.7127	0.29 ± 0.04	–	0.60 ± 0.07
BCS_Vis	0.0710	0.25 ± 0.04	–	0.53 ± 0.07
HD	0.0577	0.25 ± 0.05	–	0.57 ± 0.09
BS	0.1156	0.33 ± 0.05	–	0.53 ± 0.06
EA	1151.7	0.40 ± 0.09	–	0.57 ± 0.12
EL	2.4413	0.32 ± 0.07	–	0.53 ± 0.12

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 (every 10 min) of vaginal temperatures for 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; PS panting score; R_eff respiration efficiency; BCS_Cal caliper body condition score; BCS_Vis visual body condition score; HD hair density score; BS body size score; EA ear area (cm²); EL ear length (cm). SD standard deviation

ISSN: 1297-9686