Fig. 2

The chart of milk yield changes. Horizontal axis, date. Vertical axis, milk yield (kg/day/per). CK, the control group. SeNPs, the SeNPs group. Error bars, standard error, the length indicates the magnitude of the numerical error.

The chart of milk yield changes. Horizontal axis, date. Vertical axis, milk yield (kg/day/per). CK, the control group. SeNPs, the SeNPs group. Error bars, standard error, the length indicates the magnitude of the numerical error.