Seasonal and management impact on broiler cake nutrient composition
2004
Sistani, K.R. | Adeli, A. | Brink, G.E. | Tewolde, H. | Rowe, D.E.
Broiler "cake," which is the by-product of broiler manure management practice, is directly applied to pasture or crop lands. We studied the impact of season and broiler producers' management on broiler cake nutrient content from three commercial broiler producers. Broiler cake pH ranged from 7.0 in the summer to 8.3 in the winter among all producers. The cake total nitrogen (TN) and phosphorus (TP) were significantly impacted by season for all producers. Total N ranged from 34.8 in the spring to 43.6 g kg(-1) in the winter while TP ranged from 16.96 in the winter to 19.80 g kg(-1) in the spring. Broiler cake NH4-N content ranged from 5.78 to 15.5% of the TN for all seasons and producers. Broiler cake generated in the spring and summer contained more Ca, Mg, K, Cu, Fe, and Mn than in the fall and winter. The results provide on-farm site specific information that may help producers and nutrient planners in relation to broiler cake application rate and timing.
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