Table 2. Comparison of LH levels, mounting behavior, drinking behavior, vaginal temperature and electrical resistance of vaginal mucus between non-estrus and estrus cattle

Item	Non-estrus	Estrus	SEM	p-value1)
Luteinizing hormone (mIU/mL)2)	22.79	38.38	3.26	< 0.01
Mounting (times)3)	0.0	37.4	2.30	< 0.01
Drinking (times)3)	3.1	3.6	0.14	0.03
Vaginal temperature (°C)3)	38.4	39.0	0.04	< 0.01
Electrical resistance of vaginal mucus (Ω)3)	197.4	136.3	5.57	< 0.01

Statistical analysis carried out using Student’s t-test.
Luteinizing hormone level of non-estrus shows the average value of 12 heads. Estrus data is an averaged value of 16 estrus periods of 12 heads.
Non-estrus animal data collected for 3 days before estrus from 10 to 12 days is an averaged value of 12 heads. Estrus data obtained for 12 hours prior to estrus confirmation and for 12 hours following is an averaged value of 16 periods of estrus of 12 heads.
LH, luteinizing hormone.