Table 1.

The general characteristic of the LDA and control dairy cows

Group	BCS	Milk production (kg/day)	DMI (kg/day)
Control	3.00±0.06	31.65±0.46	15.92±0.15
LDA	2.5±0.05*	22.95±0.09**	5.01±0.05**

The general characteristic of LDA and control dairy cows were shown in the table, including parity, BCS, milk production and DMI. Healthy Holstein cows, n = 20; LDA Holstein cows, n = 30. The results are expressed as the mean ± SEM. *P < 0.05, **P < 0.01, compared with respective values in control (healthy) group

BCS body condition score, DMI dry matter intake