1. Feeding silage to fattening pigs – effects on nitrogen utilization and ammonia losses from fresh manure.
- Author
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Friman, Johanna, Mjöfors, Kristina, Salomon, Eva, and Presto Åkerfeldt, Magdalena
- Subjects
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SWINE , *AMMONIA , *NITROGEN , *SILAGE , *EXCRETION , *DISTILLERY by-products , *AMMONIUM , *MANURES - Abstract
This study evaluated the effect of feeding silage to pigs on nitrogen (N) utilization and ammonia (NH3) volatilization. In total, 128 Yorkshire × Hampshire (30–110 kg) pigs were fed commercial feed (Control) or commercial feed mixed with dried, milled silage in pelleted form (Pellet-S), fresh, chopped silage (Silage-Ch) or intensively treated silage (Silage-Pr). Silage replaced 20% of the crude protein (g/kg). Diet affected daily N excretion, which was higher for pigs fed Silage-Ch and Silage-Pr than for pigs in the Pellet-S and Control treatments. Ammonium nitrogen (NH4-N) content in the manure and NH3 volatilization from fresh manure were higher for Control pigs than for pigs in the other treatments. Overall, these results show that pre-treatment of silage influences N utilization and excretion. Furthermore, the results indicate that feeding silage to pigs can reduce NH3 volatilization from fresh manure. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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