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## Ostrich
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As IPCC (2006) does not provide an N excretion value for ostrich, the value from the danish inventory ([UNFCCC](/9%20Literature#unfccc-united-nations-framework-convention-on-climate-change-2020)) was adopted. Thus ostrich excrete 15.6 kg pl<sup>-1</sup> a<sup>-1 </sup>an<sup>-1</sup>. The UAN content of the N excretions is assumed to be 70 % (see [EMEP (2023)](/9%20Literature#emep-2023)-3B, Table 3.9, value for poultry adopted).
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As [IPCC (2006)](/9%20Literature#ipcc--intergovernmental-panel-on-climate-change-2006) does not provide an N excretion value for ostrich, the value from the danish inventory ([UNFCCC](/9%20Literature#unfccc-united-nations-framework-convention-on-climate-change-2020)) was adopted. Thus ostrich excrete 15.6 kg pl<sup>-1</sup> a<sup>-1 </sup>an<sup>-1</sup>. The UAN content of the N excretions is assumed to be 70 % (see [EMEP (2023)](/9%20Literature#emep-2023)-3B, Table 3.9, value for poultry adopted).
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## Rabbits
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The IPCC default N excretions for rabbit is 8.1 kg pl<sup>-1</sup> a<sup>-1</sup>, see IPCC (2006) 10.59, Table 10.19. This value is unrealistically high as it is in the order of magnitude ot the annual total of life weight gain.
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The IPCC default N excretions for rabbit is 8.1 kg pl<sup>-1</sup> a<sup>-1</sup>, see [IPCC (2006)](/9%20Literature#ipcc--intergovernmental-panel-on-climate-change-2006) 10.59, Table 10.19. This value is unrealistically high as it is in the order of magnitude ot the annual total of life weight gain.
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This total of weight gain can be calculated as follows (based on data given by LfL Bayern ([LfL website](https://web.archive.org/web/20221005221038/https:/www.lfl.bayern.de/ilt/tierhaltung/kleintiere/023092/))): duration of fattening period of 87 days, i.e. about four production cycles per year, and final live weigt of 3.0 kg per animal, leading to a total weight gain of 12 kg per place and year. Hence, the N excretions of rabbit have been estimated from the N balance:
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 In conservative manner, Δw<sub>round</sub> was simply set equal to the final live weight (see above). The content of crude protein of the feed, x<sub>XP,feed</sub>, was chosen to be 0.17 kg kg<sup>-1, </sup>cf. [Meissner website](http://www.meissner-widder-kaninchen.de/%20F_WERT_TAB1.html). The amount of feed (fresh matter) needed for animal weight gain is 3.5 kg kg<sup>-1</sup> (LfL Bayern). According to DLG (2005), pg.12, x<sub>n,ret</sub> is 0.03 kg kg<sup>-1</sup>. Using this data, the resulting N excretion is 0.8 kg pl<sup>-1</sup> a<sup>-1</sup>. The UAN content of the N excretions is assumed to be 60 %.
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 In conservative manner, Δw<sub>round</sub> was simply set equal to the final live weight (see above). The content of crude protein of the feed, x<sub>XP,feed</sub>, was chosen to be 0.17 kg kg<sup>-1, </sup>cf. [Meissner website](http://www.meissner-widder-kaninchen.de/%20F_WERT_TAB1.html). The amount of feed (fresh matter) needed for animal weight gain is 3.5 kg kg<sup>-1</sup> (LfL Bayern). According to [DLG (2005)](/9%20Literature#dlg---deutsche-landwirtschaftsgesellschaft-ed-2005), pg.12, x<sub>n,ret</sub> is 0.03 kg kg<sup>-1</sup>. Using this data, the resulting N excretion is 0.8 kg pl<sup>-1</sup> a<sup>-1</sup>. The TAN content of the N excretions is assumed to be 60 %, the value of horses was adopted according to [EMEP (2023)](/9%20Literature#emep-2023)-3B, Table 3.9.
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## Deer
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According to DLG (2014) deer excrete 16 kg pl<sup>-1</sup> a<sup>-1 </sup>an<sup>-1</sup>. The UAN content of the N excretions is assumed to be 50 % (no value provided by [EMEP (2023)](/9%20Literature#emep-2023)-3B, Table 3.9), the value of goats was adopted.
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According to [DLG (2014)](/9%20Literature#dlg---deutsche-landwirtschaftsgesellschaft-ed-2014) deer excrete 16 kg pl<sup>-1</sup> a<sup>-1 </sup>an<sup>-1</sup>. The TAN content of the N excretions is assumed to be 50 % (no value provided by [EMEP (2023)](/9%20Literature#emep-2023)-3B, Table 3.9), the value of goats was adopted.
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## Fur animals
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IPCC (2006), Table 10.19 gives a default value for the N excretion of fur animals: 4.59 kg pl<sup>-1</sup> a<sup>-1 </sup>an<sup>-1</sup>. The UAN content of the N excretions is assumed to be 60 % ( [EMEP (2023)](/9%20Literature#emep-2023)-3B, Table 3.9). |
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[IPCC (2006)](/9%20Literature#ipcc--intergovernmental-panel-on-climate-change-2006), Table 10.19 gives a default value for the N excretion of fur animals: 4.59 kg pl<sup>-1</sup> a<sup>-1 </sup>an<sup>-1</sup>. The TAN content of the N excretions is assumed to be 60 % ([EMEP (2023)](/9%20Literature#emep-2023)-3B, Table 3.9). |
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