Energy and Nutrient Recovery from Cattle Feedlots

Table 1

Value of nutrients based on prediction maps. Harvesting whole pen is compared to selective harvesting with a threshold set at 1.7% for TN.

	Feedyard A, Pen A	Feedyard B, Pen B	Feedyard A, Pen A TN>1.7%	Feedyard B, Pen B TN>1.7%
Average TP, ppm	8025	5387	8306	7943
Average TN, ppm	21724	14712	22420	21891
Mass, TP, kg	2193	969	2126	772
Mass, TN, kg	5939	2647	5738	2128
Total harvested mass, kg	273,000	180,000	256,000	97,000
Value/m^3, TP, $/m^3	1.97	1.32	2.04	1.95
Value/m^3, TN, $/m^3	3.76	2.54	3.88	3.79
$/m^3, total	5.73	3.86	5.92	5.74