Table 3. The effect of replacement of ordinary rice with red yeast rice on N metabolism in goats (n = 20).

	CT	RYR	SED	P
Nitrogen intake and output (g/d)
Nitrogen intake (NI)	19.1	19.3	0.12	0.709
Fecal nitrogen (FN)	6.4	7.4	0.09	<0.001
Urine nitrogen (UN)	7.8	8.1	0.49	0.580
Retention nitrogen (RN)	4.9	3.8	0.51	0.071
Nitrogen utilization (%)
FN/NI	33.6	38.3	0.01	<0.001
UN/NI	40.7	41.9	0.03	0.621
RN/NI	25.6	19.8	2.89	0.061