Table 2.

Influence of reticulorumen pH and reproductive status on automatic milking system (AMS) indicators and milk traits of cows.

Reticulorumen pH Class	AMS Parameters (M, SE)			AME Parameters (M, SE)
1	Activity (steps/hour)	10.24	1.239	Fat (%)	3.58	0.187
2		10.30	0.506		4.58	0.076
3		8.96	0.620		3.93	0.094
4		9.27	0.876		3.93	0.132
1	Reticulorumen temperature (°C)	38.78	0.078	Protein (%)	3.37	0.057
2		38.76	0.032		3.58	0.023
3		38.79	0.039		3.43	0.028
4		38.72	0.055		3.37	0.040
1	BW (kg)	756.00	61.710	F/P	1.06	0.048
2		593.67	25.193		1.28	0.020
3		630.75	30.855		1.15	0.024
4		630.00	43.636		1.17	0.031
1	RT (min/d)	487.00	24.947	Lactose (%)	4.53	0.028
2		423.50	10.185		4.61	0.011
3		436.75	12.474		4.59	0.014
4		478.50	17.640		4.56	0.020
1	MY (kg/d)	37.50	2.214	SCC (tousd/mL)	124.00	222.028
2		41.07	1.067		105.83	90.643
3		37.13	1.307		135.25	111.014
4		49.85	1.849		95.00	156.998

Means with different superscripts among classes are significantly different (p < 0.05). M—mean; SE—standard of error of the mean; RT—rumination time; BW—body weight; SCC—somatic cell count; MY—milk yield; F/P—milk fat-protein ratio.