Analysis of Nonpoint Source Pollution and Water Environmental Quality Variation Trends in the Nansi Lake Basin from 2002 to 2012

Table 3

The fecal excretion coefficient and the average content of pollutants.

	Dung emissions	Urine emissions	Feeding cycle	CODCr (kg/t)		NH3-N (kg/t)
	(kg/d)	(kg/d)	(d)	Dung	Urine	Dung	Urine
Cow	20	10	365	31	6	1.7	3.5
Pig	2	3.3	150	52	9	3.1	1.4
Chicken	0.1	—	60	45	—	4.8	—