Friman, Johanna
- Department of Applied Animal Science and Welfare, Swedish University of Agricultural Sciences
Abstract
This study evaluated the effect of feeding silage to pigs on nitrogen (N) utilization and ammonia (NH3) volatilization. In total, 128 Yorkshire x 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.
Keywords
Finishing pig; silage; TMR; nitrogen; ammonia volatilization
Published in
Acta Agriculturae Scandinavica, Section A - Animal Science
2023, volume: 72, number: 3-4, pages: 111-122
Publisher: TAYLOR AND FRANCIS AS
SLU Authors
Åkerfeldt, Magdalena
- Department of Applied Animal Science and Welfare, Swedish University of Agricultural Sciences
- Department of Applied Animal Science and Welfare, Swedish University of Agricultural Sciences
UKÄ Subject classification
Animal and Dairy Science
Publication identifier
- DOI: https://doi.org/10.1080/09064702.2023.2225517
Permanent link to this page (URI)
https://res.slu.se/id/publ/122991