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  • 1.
    Friman, Johanna
    et al.
    SLU Swedish University of Agricultural Sciences, Sweden.
    Mjöfors, Kristina
    RISE Research Institutes of Sweden, Bioekonomi och hälsa, Jordbruk och livsmedel.
    Salomon, Eva
    RISE Research Institutes of Sweden, Bioekonomi och hälsa, Jordbruk och livsmedel.
    Presto Åkerfeldt, Magdalena
    SLU Swedish University of Agricultural Sciences, Sweden.
    Feeding silage to fattening pigs – effects on nitrogen utilization and ammonia losses from fresh manure2023Ingår i: Acta agriculturae Scandinavica. Section A, Animal science, ISSN 0906-4702, E-ISSN 1651-1972, Vol. 72, nr 3, s. 111-Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    ABSTRACTThis 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.

  • 2.
    Henriksson, Maria
    et al.
    SLU Swedish University of Agricultural Sciences, Sweden.
    Cederberg, Christel
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Swensson, Christian
    SLU Swedish University of Agricultural Sciences, Sweden.
    Impact of cultivation strategies and regional climate on greenhouse gas emissions from grass/clover silage2012Ingår i: Acta agriculturae Scandinavica. Section A, Animal science, ISSN 0906-4702, E-ISSN 1651-1972, Vol. 62, nr 4, s. 233-237Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    More than half the annual dry matter intake (DMI) of feed by dairy cows can be roughage. Its production and storage constitute a significant part of the life cycle greenhouse gas (GHG) emissions from milk production. This study estimated and analysed the impact of grass/clover silage production practices in five climatically different dairy production regions in Sweden on emitted GHG. GHG emissions calculated by the life cycle assessment method were 0.46-0.54 and 0.48-0.63 kg carbon dioxide equivalents per kg silage DMI for normal and higher silage nutrient quality, respectively. Crop cultivation for higher nutrient quality through an extra cut and increased nitrogen fertilisation rates increased GHG emissions by up to 16%. Varying the yield level by +/-20% decreased (11%)/increased (15%) GHG emissions per kg DMI. Improved management practices can reduce GHG emissions feed production, but accurate estimates of yield levels and feed losses are needed to reduce uncertainties.

  • 3.
    Knický, Martin
    et al.
    SLU, Sweden.
    Lingvall, P.
    Ensiling of high wilted grass-clover mixture by use of different additives to improve quality2004Ingår i: Acta agriculturae Scandinavica. Section A, Animal science, ISSN 0906-4702, E-ISSN 1651-1972, Vol. 54, nr 4, s. 197-205Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The quality of silage is of great importance because it benefits animal production, animal health and food quality. This study examined the impact of mixtures of sodium benzoate, sodium nitrite, hexamine (HMTA), sodium propionate, sodium bisulphite, and propionic acid on silage quality in low- and high-wilted grass/clover mixtures. Additionally, it was focused on the nitrite concentration in the silages. The silage (wilted to 300 or 600 g dry matter kg-1 of fresh weight) consisted of 50% red clover (Trifolium pratense) and 50% timothy (Phleum pratense). The forage was not chopped, and was ensiled in two types of silo: 25-litre stainless steel laboratory silos, stored for 120 days and 1.7-litre glass silos, stored for 14 days. The effect of silage additives in improving the fermentation process, reduction of clostridial growth and silage losses was achieved in low-wilted silages whereas the impact on aerobic stability enhancement was pronounced in both low and high dry matter silage. The combination of sodium benzoate and sodium bisulphite had an unsatisfactory effect on the reduction of nutrient losses and improvement of aerobic stability. A mixture of 672 g sodium benzoate, 425 g sodium propionate, and 1890 g propionic acid effectively improved the silage quality. The application of 465 g sodium benzoate, 360 g sodium nitrite, 240 g hexamine, and 165 g sodium propionate at a dose of 3 litres per tonne fresh matter was sufficient to inhibit clostridial and yeast growth and increase silage stability in low-wilted forages, whereas a mixture of 698 g sodium benzoate, 540 g sodium nitrite, 360 g hexamine, and 248 g sodium propionate at a dose of 4.5 litres per tonne was more effective at higher dry matter. The nitrite-N concentration in silages was far below the toxic level. © 2004 Taylor & Francis.

  • 4.
    Korsaeth, Audun
    et al.
    Norwegian Institute of Agriculture and Environmental Research, Norway.
    Jacobsen, A. Z.
    NTNU Norwegian University of Science and Technology, Norway.
    Roer, Anne Grete
    NTNU Norwegian University of Science and Technology, Norway.
    Henriksen, Trond Maukon
    Norwegian Institute of Agriculture and Environmental Research, Norway.
    Sonesson, Ulf
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Bonesmo, Helge
    Norwegian Agricultural Economics Research Institute, Norway.
    Skjelvåg, Arne Oddvar
    Norwegian University of Life Sciences, Norway.
    Hammer Strømman, Anders
    NTNU Norwegian University of Science and Technology, Norway.
    Environmental life cycle assessment of cereal and bread production in Norway2012Ingår i: Acta agriculturae Scandinavica. Section A, Animal science, ISSN 0906-4702, E-ISSN 1651-1972, Vol. 62, nr 4, s. 242-253Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    We assessed the environmental impacts of producing bread, as delivered to the consumer, assuming the use of Norwegian ingredients only. Ten impact categories, including global warming potential (GWP), were quantified by mixed modelling and life cycle assessment. Firstly, we quantified the impacts of growing barley, oats, winter and spring wheat on 93 farms that were representative of the main cereal production regions in Norway. We used wide system boundaries, which included all relevant processes occurring both pre-farm and on-farm. Secondly, we assessed a representative production chain for bread, including transport, milling, baking and packing processes. On-farm processes accounted for a large share of the environmental impacts attributable to the production of bread (e.g. 50% for GWP). There is thus considerable potential for environmental improvements through changes in farm management. In total, the GWP per kg of bread (freshweight) was 0.95 kg CO2-equivalent. The environmental footprint of transport was small.

  • 5.
    Li, Shengjie
    et al.
    SLU Swedish University of Agricultural Sciences, Sweden.
    Zamaratskaia, Galia
    SLU Swedish University of Agricultural Sciences, Sweden.
    Roos, Stefan
    SLU Swedish University of Agricultural Sciences, Sweden; CSIRO Commonwealth Scientific and Industrial Research Organisation, Australia.
    Båth, Klara
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Food and Bioscience, Microbiology.
    Meijer, Johan
    SLU Swedish University of Agricultural Sciences, Sweden.
    Borch, Elisabeth
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Food and Bioscience, Microbiology.
    Johansson, Monika
    SLU Swedish University of Agricultural Sciences, Sweden.
    Inter-relationships between the metrics of instrumental meat color and microbial growth during aerobic storage of beef at 4°C2015Ingår i: Acta agriculturae Scandinavica. Section A, Animal science, ISSN 0906-4702, E-ISSN 1651-1972, Vol. 65, nr 2, s. 97-106Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The objective of this study was to investigate the inter-relationships between changes in beef color and microbial growth when steaks from longissimus thoracis et lumborum muscles were overwrapped with polyvinyl chloride film and stored at 4°C. At day 0, 4, 7 and 10 instrumental color (CIE L*, a*, b* and spectral scans) and microbial counts were measured. Bacterial communities were characterized through Terminal Restriction Fragment Length Polymorphism analysis. Both meat discoloration and microbial spoilage occurred at day 10. Total viable count, Enterobacteriaceae count and the relative abundance of Pseudomonas spp. and Acinetobacter spp. were significantly correlated with color metrics associated with discoloration. These findings indicate that meat discoloration and microbial growth may not be totally independent effects and changes in a*, Chroma and hue angle may be an indicator of meat spoilage under this specific storage condition. Meanwhile, Enterobacteriaceae and aerobic bacteria might play important roles in meat discoloration.

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