Greenhouse gas emissions and final compost properties from co-composting bovine specified risk material and mortalities with manure

摘要: The increased disposal costs of cattle specified risk materials (SRM) have reduced the competitiveness Canadian beef industry. SRM include skull, brain, trigeminal ganglia, eyes, palatine tonsils, spinal cord and dorsal root ganglia. This study investigates greenhouse gas (GHG) emissions final compost properties from open windrow co-composting manure with bovine mortalities. There were two treatments four replications: SRMC consisting SRM, barley straw COWC mortalities, straw. Average temperature was higher (P < 0.05) for (47.1°C) than (44.1°C) over first 139 days. coliform count, moisture, pH TC contents not significantly different between while TN available N (NH4 + NO3 − NO2 −) lower COWC. average surface GHG flux 24.3 g C day−1 m−2 0.17 CO2 N2O, respectively, those (31.6 respectively), but CH4 (0.47 m−2) (1.57 m−2). While a few large bones left in mortality treatment, composting decomposed all suggesting that it may be viable alternative to rendering disposal.