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[[_TOC_]]
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* [2.3.1 Cattle](2-Input-data/2.3-Animal-Numbers/2.3.1-Cattle)
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* [2.3.2 Pigs](2-Input-data/2.3-Animal-Numbers/2.3.2-Pigs)
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* [2.3.3 Small ruminants](2-Input-data/2.3-Animal-Numbers/2.3.3-Small-ruminants)
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* [2.3.4 Poultry](2-Input-data/2.3-Animal-Numbers/2.3.4-Poultry)
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* [2.3.1 Cattle](https://git-dmz.thuenen.de/vos/EmissionsAgriculture2023/-/wikis/2-Input-data/2.3-Animal-Numbers/2.3.1-Cattle)
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* [2.3.2 Pigs](https://git-dmz.thuenen.de/vos/EmissionsAgriculture2023/-/wikis/2-Input-data/2.3-Animal-Numbers/2.3.2-Pigs)
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* [2.3.3 Small ruminants](https://git-dmz.thuenen.de/vos/EmissionsAgriculture2023/-/wikis/2-Input-data/2.3-Animal-Numbers/2.3.3-Small-ruminants)
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* [2.3.4 Poultry](https://git-dmz.thuenen.de/vos/EmissionsAgriculture2023/-/wikis/2-Input-data/2.3-Animal-Numbers/2.3.4-Poultry)
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The German inventory uses a time step of one year as there is no data available to allow for a more differentiated description. This is especially of concern for the animal numbers. Hence it is necessary to assume the animal numbers counted at a certain reference date to be constant throughout the year. This assumption is consistent with the IPCC definition of mean animal places that are used 365 days a year ('AAP', see Chapter [1.1](1-General-aspects/1.1-symbols,-units,-definitions)). The animal numbers used in the inventory are dealt with in detail in subsequent chapters (Chapter [2.3.1](2-Input-data/2.3-Animal-Numbers/2.3.1-Cattle) onwards). In the following, a description of the origin of these data is provided and a description of the data finally used in the inventory is given. Finally, a comparison is made between FAOSTAT animal numbers and German figures.
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The German inventory uses a time step of one year as there is no data available to allow for a more differentiated description. This is especially of concern for the animal numbers. Hence it is necessary to assume the animal numbers counted at a certain reference date to be constant throughout the year. This assumption is consistent with the IPCC definition of mean animal places that are used 365 days a year ('AAP', see Chapter [1.1](https://git-dmz.thuenen.de/vos/EmissionsAgriculture2023/-/wikis/1-General-aspects/1.1-symbols,-units,-definitions)). The animal numbers used in the inventory are dealt with in detail in subsequent chapters (Chapter [2.3.1](https://git-dmz.thuenen.de/vos/EmissionsAgriculture2023/-/wikis/2-Input-data/2.3-Animal-Numbers/2.3.1-Cattle) onwards). In the following, a description of the origin of these data is provided and a description of the data finally used in the inventory is given. Finally, a comparison is made between FAOSTAT animal numbers and German figures.
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# Official surveys
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The Federal Statistical Office and the Statistical Agencies of the federal states carry out agricultural structure surveys in order to collect, along with other data, the head counts of cattle, pigs, sheep, horses (from 2010 onwards: equids) and poultry. These agricultural structure surveys took place every other year for the years 1990 – 1996 and 1999 – 2007, in the year 2010 in the context of the more comprehensive 2010 agricultural census (LZ 2010), 2013, 2016 and 2020 in the context of the more comprehensive 2020 agricultural census (LZ 2020). The Surveys 1990, 1994 and 1996 referenced to 3 December, while the surveys 1999 – 2007 referenced to 3 May. The surveys 2010, 2013, 2016 and 2020 referenced to 1 March. In addition to the agricultural structure surveys, annual animal head count censuses are carried out ([StatBA FS3 R4.1](9%20Literature#statba-fs3-r41-statistisches-bundesamt-annual-reports)). Up to and including 1998 these censuses took place every six months for cattle and sheep (June, December), every four months for pigs (April, August, December), and in even years in December for all animal categories, i. e. also for horses and poultry. Reference day was always the third day of the respective month. Since 1999 the animal head count censuses for cattle and pigs take place two times a year: 3 May and 3 November. For sheep the reference day was 3 May in 1999 - 2009, 3 November in 2010, and 1 March in subsequent years. For cattle, pigs, and sheep official animal numbers are available for all years since 1990. This means that the inventories up to and including 1998 used the data collected in December (in June for sheep), while afterwards the inventories up to and including 2010 used the data from May (sheep: 1 March 2010 as no data were available in May or November). Accoding to the Federal Statistical Office the animal numbers for the inventories from 2011 onwards have to be referenced to November. These figures are in keeping with the figures the Federal Statistical Office has provided to EUROSTAT. The change in the reference date (to 3 November) does not significantly affect the population figures of cattle and swine. Among the figures for sheep, livestock-population figures had to be corrected; cf. Chapter 4.1.1.1 The numbers of goats in Germany were not surveyed between 1977 and 2010. Until 2004, the Federal Ministry of Food and Agriculture (BMEL) estimated goat populations at the national level. As of 2005, the pertinent time series was continued via estimation by the Federal Statistical Office. In 2010, the total number of goats was officially determined for the first time (reference day: 1 March), in the framework of the 2010 agricultural census (LZ 2010). That figure is considerably lower than the estimates used for earlier years. By agreement with the Federal Statistical Office, those estimates, which are also reported to EUROSTAT, continue to be used in the inventory. For 2013, 2016 and 2020 the Federal Statistical Office provided goat-population figures (reference day: 1 March). For horses/equids, and for poultry, population figures are available only at intervals of two to three years, from agricultural structure surveys (reference dates: 1990 - 1998, 3 December; 1999 – 2007, 3 May; 2010, 2013, 2016 and 2020, 1 March). By agreement with the Federal Statistical Office, the population figures have not been adjusted to take account for the variations in reference dates. In previous surveys (in 2010 for the last time) significant numbers of poultry had not been counted as they were held by companies that did not need to report poultry numbers. Hence, the rules of poultry counting were adjusted for the 2013 survey. As a consequence, the official 2013 poultry numbers are much higher than to be expected after the trend in earlier years. As the Federal Statistical Office do not intend to correct poultry numbes of earlier years, the poultry numbers used in the inventory exhibit a steep upward trend between 2010 and 2013. This trend does not reflect any real development in poultry numbers due to the different numbers of animals collected for 2010 and 2013. The increase in poultry numbers from 2013 to 2016 is significantly flatter. For the calculation of the inventory, data gaps had to be closed and the given figures of animal places had partly to be modified to meet the requirements of emission reporting. This is discussed below, along with the way of how buffalo, asses and mules are accounted for.
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The Federal Statistical Office and the Statistical Agencies of the federal states carry out agricultural structure surveys in order to collect, along with other data, the head counts of cattle, pigs, sheep, horses (from 2010 onwards: equids) and poultry. These agricultural structure surveys took place every other year for the years 1990 – 1996 and 1999 – 2007, in the year 2010 in the context of the more comprehensive 2010 agricultural census (LZ 2010), 2013, 2016 and 2020 in the context of the more comprehensive 2020 agricultural census (LZ 2020). The Surveys 1990, 1994 and 1996 referenced to 3 December, while the surveys 1999 – 2007 referenced to 3 May. The surveys 2010, 2013, 2016 and 2020 referenced to 1 March. In addition to the agricultural structure surveys, annual animal head count censuses are carried out ([StatBA FS3 R4.1](https://git-dmz.thuenen.de/vos/EmissionsAgriculture2023/-/wikis/9%20Literature#statba-fs3-r41-statistisches-bundesamt-annual-reports)). Up to and including 1998 these censuses took place every six months for cattle and sheep (June, December), every four months for pigs (April, August, December), and in even years in December for all animal categories, i. e. also for horses and poultry. Reference day was always the third day of the respective month. Since 1999 the animal head count censuses for cattle and pigs take place two times a year: 3 May and 3 November. For sheep the reference day was 3 May in 1999 - 2009, 3 November in 2010, and 1 March in subsequent years. For cattle, pigs, and sheep official animal numbers are available for all years since 1990. This means that the inventories up to and including 1998 used the data collected in December (in June for sheep), while afterwards the inventories up to and including 2010 used the data from May (sheep: 1 March 2010 as no data were available in May or November). Accoding to the Federal Statistical Office the animal numbers for the inventories from 2011 onwards have to be referenced to November. These figures are in keeping with the figures the Federal Statistical Office has provided to EUROSTAT. The change in the reference date (to 3 November) does not significantly affect the population figures of cattle and swine. Among the figures for sheep, livestock-population figures had to be corrected; cf. Chapter 4.1.1.1 The numbers of goats in Germany were not surveyed between 1977 and 2010. Until 2004, the Federal Ministry of Food and Agriculture (BMEL) estimated goat populations at the national level. As of 2005, the pertinent time series was continued via estimation by the Federal Statistical Office. In 2010, the total number of goats was officially determined for the first time (reference day: 1 March), in the framework of the 2010 agricultural census (LZ 2010). That figure is considerably lower than the estimates used for earlier years. By agreement with the Federal Statistical Office, those estimates, which are also reported to EUROSTAT, continue to be used in the inventory. For 2013, 2016 and 2020 the Federal Statistical Office provided goat-population figures (reference day: 1 March). For horses/equids, and for poultry, population figures are available only at intervals of two to three years, from agricultural structure surveys (reference dates: 1990 - 1998, 3 December; 1999 – 2007, 3 May; 2010, 2013, 2016 and 2020, 1 March). By agreement with the Federal Statistical Office, the population figures have not been adjusted to take account for the variations in reference dates. In previous surveys (in 2010 for the last time) significant numbers of poultry had not been counted as they were held by companies that did not need to report poultry numbers. Hence, the rules of poultry counting were adjusted for the 2013 survey. As a consequence, the official 2013 poultry numbers are much higher than to be expected after the trend in earlier years. As the Federal Statistical Office do not intend to correct poultry numbes of earlier years, the poultry numbers used in the inventory exhibit a steep upward trend between 2010 and 2013. This trend does not reflect any real development in poultry numbers due to the different numbers of animals collected for 2010 and 2013. The increase in poultry numbers from 2013 to 2016 is significantly flatter. For the calculation of the inventory, data gaps had to be closed and the given figures of animal places had partly to be modified to meet the requirements of emission reporting. This is discussed below, along with the way of how buffalo, asses and mules are accounted for.
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# Data used in the inventory
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Since the calendar year 2008, cattle head counts have been taken from a special database ("origin-tracing and information system for animals" HIT - Herkunftssicherungs- und Informationssystem für Tiere; http://www.hi-tier.de) in which every animal is registered. This leads to systematically higher animal head counts result for years from 2008 onwards as in the years before not all animals had been counted due to survey thresholds. A comparison carried out by the Federal Statistical Office for 2007 reveals that the cattle head counts shown in HIT are 2.9 % higher than those resulting via the conventional survey method (for dairy cows alone, the head counts are 2.8 % higher). Pursuant to the Federal Statistical Office, it is not possible to estimate the discrepancy for earlier years. Consequently, the cattle time series for 1990 to 2007 have not been adjusted. As a result, emissions from cattle husbandry are slightly underestimated for 1990 to 2007.
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The numbers of dairy cows and male cattle > 2 years are taken directly from the statistics. Until 2007, the number of suckler cows also included the number of slaughter and beef cows (after that this category was no longer recorded separately). The calves in the inventory only include calves up to the age of 4 months. In the statistics, however, calves are recorded up to the age of 8 months (before 2008 up to the age of 6 months). Therefore, the number of animals from the remaining categories from the official statistics had to be converted, which also has an impact on the number of male beef cattle , female beef cattle and the dairy heifers newly introduced in the inventory from submission 2021 (for the definition of dairy heifers and female beef cattle, see [2.2](2-Input-data/2.2-Formation-of-animal-subcategories)). The total number of other cattle in the inventory always corresponds to the total number of other cattle surveyed. As of 2013, the cattle numbers reported by the Federal Statistical Office according to various categories (calf, heifers, cow, etc.) also include a breakdown of the total number of cattle into breeds. It also mentions the sum of bison and buffalo. However, it is not possible to break down this sum in such a way that it could be divided between the various categories (calf, heifer, cow, etc.) (Spielmanns, Federal Statistical Office, personal communication, 2020). So there is no way to deduct the number of buffalo from the above. For this reason, the buffalo have not been listed as a separate category in the inventory since the 2015 submission (included elsewhere, IE); their emissions are included in the emissions from cattle. To do this, however, it was necessary to find an allocation of the buffalo to the cattle for the years before 2013. The Federal Statistical Office did not publish any buffalo figures for this period; however, the gap between 2000 and 2012 was closed by information from the German Buffalo Association, see Chapter [2.3.1](2-Input-data/2.3-Animal-Numbers/2.3.1-Cattle#buffalo). Based on the recommendation in the final report on the ‘Initial Review under the Kyoto Protocol and Annual 2006 Review under the Convention’, the time series of the buffalo population at the national level for the years before 2000 was completed by linear extrapolation of the data from 2000 to 2012. (For the years 1990 to 1995 there were mathematically negative buffalo numbers, which were replaced by zeros.) Since there is no information about the structure of the buffalo population for all years up to 2012, all buffalos were added to the cattle category ‘suckler cows’ for this period. The justification of this procedure is demonstrated in Chapter [2.3.1](2-Input-data/2.3-Animal-Numbers/2.3.1-Cattle#buffalo). The errors that may be associated with the above-described consideration of the buffalo in the cattle are assessed as negligible, since the ratio of buffalo to cattle numbers for the entire time series from 1990 onwards lies between zero and less than 0.1%.
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The numbers of dairy cows and male cattle > 2 years are taken directly from the statistics. Until 2007, the number of suckler cows also included the number of slaughter and beef cows (after that this category was no longer recorded separately). The calves in the inventory only include calves up to the age of 4 months. In the statistics, however, calves are recorded up to the age of 8 months (before 2008 up to the age of 6 months). Therefore, the number of animals from the remaining categories from the official statistics had to be converted, which also has an impact on the number of male beef cattle , female beef cattle and the dairy heifers newly introduced in the inventory from submission 2021 (for the definition of dairy heifers and female beef cattle, see [2.2](https://git-dmz.thuenen.de/vos/EmissionsAgriculture2023/-/wikis/2-Input-data/2.2-Formation-of-animal-subcategories)). The total number of other cattle in the inventory always corresponds to the total number of other cattle surveyed. As of 2013, the cattle numbers reported by the Federal Statistical Office according to various categories (calf, heifers, cow, etc.) also include a breakdown of the total number of cattle into breeds. It also mentions the sum of bison and buffalo. However, it is not possible to break down this sum in such a way that it could be divided between the various categories (calf, heifer, cow, etc.) (Spielmanns, Federal Statistical Office, personal communication, 2020). So there is no way to deduct the number of buffalo from the above. For this reason, the buffalo have not been listed as a separate category in the inventory since the 2015 submission (included elsewhere, IE); their emissions are included in the emissions from cattle. To do this, however, it was necessary to find an allocation of the buffalo to the cattle for the years before 2013. The Federal Statistical Office did not publish any buffalo figures for this period; however, the gap between 2000 and 2012 was closed by information from the German Buffalo Association, see Chapter [2.3.1](https://git-dmz.thuenen.de/vos/EmissionsAgriculture2023/-/wikis/2-Input-data/2.3-Animal-Numbers/2.3.1-Cattle#buffalo). Based on the recommendation in the final report on the ‘Initial Review under the Kyoto Protocol and Annual 2006 Review under the Convention’, the time series of the buffalo population at the national level for the years before 2000 was completed by linear extrapolation of the data from 2000 to 2012. (For the years 1990 to 1995 there were mathematically negative buffalo numbers, which were replaced by zeros.) Since there is no information about the structure of the buffalo population for all years up to 2012, all buffalos were added to the cattle category ‘suckler cows’ for this period. The justification of this procedure is demonstrated in Chapter [2.3.1](https://git-dmz.thuenen.de/vos/EmissionsAgriculture2023/-/wikis/2-Input-data/2.3-Animal-Numbers/2.3.1-Cattle#buffalo). The errors that may be associated with the above-described consideration of the buffalo in the cattle are assessed as negligible, since the ratio of buffalo to cattle numbers for the entire time series from 1990 onwards lies between zero and less than 0.1%.
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For pigs as well, several of the categories used in official surveys have been modified with a view to obtaining maximally homogeneous animal categories. The official animal counts for piglets weighing up to 20 kg animal<sup>-1</sup>, and for young pigs and fattening pigs weighing at least 20 kg animal<sup>-1</sup>, have been converted, using the procedure described in [Haenel et al. (2011)](9%20Literature#haenel-h-d-d%C3%A4mmgen-u-r%C3%B6semann-c-2011b), into animal counts for the inventory categories 'weaners' and 'fattening pigs'. This transformation of animal numbers has no impact on the total number of pigs. However, as the transformation algorithm uses animal weights, modifications of animal weights can lead to certain animal number trade-offs between the two categories 'weaners' and 'fattening pigs'. However, for purposes of emission calculation, the number of piglets weighing up to 8 kg is deducted from that total number. This is done for the reason that piglets weighing up to 8 kg are considered suckling piglets that, with regard to their emissions, are implicitly included in emission calculations for sows.
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For pigs as well, several of the categories used in official surveys have been modified with a view to obtaining maximally homogeneous animal categories. The official animal counts for piglets weighing up to 20 kg animal<sup>-1</sup>, and for young pigs and fattening pigs weighing at least 20 kg animal<sup>-1</sup>, have been converted, using the procedure described in [Haenel et al. (2011)](https://git-dmz.thuenen.de/vos/EmissionsAgriculture2023/-/wikis/9%20Literature#haenel-h-d-d%C3%A4mmgen-u-r%C3%B6semann-c-2011b), into animal counts for the inventory categories 'weaners' and 'fattening pigs'. This transformation of animal numbers has no impact on the total number of pigs. However, as the transformation algorithm uses animal weights, modifications of animal weights can lead to certain animal number trade-offs between the two categories 'weaners' and 'fattening pigs'. However, for purposes of emission calculation, the number of piglets weighing up to 8 kg is deducted from that total number. This is done for the reason that piglets weighing up to 8 kg are considered suckling piglets that, with regard to their emissions, are implicitly included in emission calculations for sows.
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The official population numbers for sheep have been corrected for all years as of 2010 in order to take account of the change in the relevant survey date from spring (until 2009, May/June) to 1 March (2010) and to 3 November (since 2011). The correction compensates for the apparent reduction in the number of lambs that this change entails (as well as the corresponding reduction in the total number of sheep), see Chapter [2.3.3](2-Input-data/2.3-Animal-Numbers/2.3.3-Small-ruminants).
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The official population numbers for sheep have been corrected for all years as of 2010 in order to take account of the change in the relevant survey date from spring (until 2009, May/June) to 1 March (2010) and to 3 November (since 2011). The correction compensates for the apparent reduction in the number of lambs that this change entails (as well as the corresponding reduction in the total number of sheep), see Chapter [2.3.3](https://git-dmz.thuenen.de/vos/EmissionsAgriculture2023/-/wikis/2-Input-data/2.3-Animal-Numbers/2.3.3-Small-ruminants).
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The official goat-population figures available for 2010, 2013, 2016 and 2020 were used to estimate the missing data for the interim years by linear interpolation. The animal numbers for 2021 are estimated by extrapolating the trend between 2016 and 2020.
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In the inventory, horse numbers are subdivided into the two categories "heavy horses" and "light horses and ponies", to take account of the differences in emissions behaviour between the two categories. Since the agricultural census 2010 numbers of equids, rather than numbers of horses, were counted. The equid figures inseparable include the counts for mules and asses. Hence, as of the 2015 submission, the inventory no longer includes "mules and asses" as a separate category; until the year 2009, the counts for mules and asses were added to the counts for light horses and ponies. In keeping with data of the INTERESSENGEMEINSCHAFT FÜR ESEL UND MAULTIERE (Interest assocation for mules and asses – IGEM) (personal communication, B. Schmutz, 28 Sept 2009) the applicable number for mules and asses has been estimated at 8,500 mules and asses. Data gaps within the time series of the animal numbers are closed by linear interpolation. The animal numbers for 2021 are estimated by extrapolating the trend between 2016 and 2020.
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In official surveys including 2007, pullets up to the age of six months were counted, although in common husbandry practice pullets are considered laying hens when they complete their 18th week of life. For the inventory, therefore, a fraction of the pullets was shifted into the laying-hen category up to and including the year 2007. At the same time, the total sum of pullets and laying hens was not changed. The next official survey after 2007 took place in 2010. As of this survey the animal number shifting between both categories is no longer needed as the animals are now counted according to husbandry practice. For all poultry categories the data gaps in the time series are closed by linear interpolation. For 2021 the 2020 figures have been maintained, as extrapolation of trends between 2016 and 2020 would have led, at least in part, to implausible (partly negative) animal numbers in the next few years. For laying hens, the figures of 2021 were estimated on the basis of the 2020 figures and the trends of data published by the Federal Statistical Office on number of housing places (see [Genesis data base](9-Literature#statistisches-bundesamt)).
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In official surveys including 2007, pullets up to the age of six months were counted, although in common husbandry practice pullets are considered laying hens when they complete their 18th week of life. For the inventory, therefore, a fraction of the pullets was shifted into the laying-hen category up to and including the year 2007. At the same time, the total sum of pullets and laying hens was not changed. The next official survey after 2007 took place in 2010. As of this survey the animal number shifting between both categories is no longer needed as the animals are now counted according to husbandry practice. For all poultry categories the data gaps in the time series are closed by linear interpolation. For 2021 the 2020 figures have been maintained, as extrapolation of trends between 2016 and 2020 would have led, at least in part, to implausible (partly negative) animal numbers in the next few years. For laying hens, the figures of 2021 were estimated on the basis of the 2020 figures and the trends of data published by the Federal Statistical Office on number of housing places (see [Genesis data base](https://git-dmz.thuenen.de/vos/EmissionsAgriculture2023/-/wikis/9-Literature#statistisches-bundesamt)).
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In the inventory, the official data for turkeys were broken down by the categories 'turkeys, males' and 'turkeys, females', for all years since 1990, to take account of the differences in emissions behaviour.
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Table 1 shows the data gaps left by official animal number since 1990 and names the methods used for data gaps closure.
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Table 2 summarizes the resulting time series of national numbers of animal places. The animal numbers of the various subcategories covering other cattle, pigs and poultry can be found in the data collection provided with this report (see Chapter [8](8%20references%20to%20the%20data%20collection)) on sheet „AC_1005“).
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Table 2 summarizes the resulting time series of national numbers of animal places. The animal numbers of the various subcategories covering other cattle, pigs and poultry can be found in the data collection provided with this report (see Chapter [8](https://git-dmz.thuenen.de/vos/EmissionsAgriculture2023/-/wikis/8%20references%20to%20the%20data%20collection)) on sheet „AC_1005“).
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**Table 1: Reference dates of the surveys and methods of data gap filling used in the inventory**
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... | ... | @@ -43,7 +43,7 @@ Table 2 summarizes the resulting time series of national numbers of animal place |
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# Comparison with livestock figures of the FAO
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The Food and Agriculture Organization of the United Nations (FAO) publishes worldwide animal numbers in its internet database [FAOSTAT](9-Literature#fao-food-and-agriculture-organization-of-the-united-nations). The German data in FAOSTAT basically come from the Federal Statistical Office in Germany, the data source that is also the basis for the German inventory. However, for cattle, pigs, sheep, goats, horses and poultry, the comparison of FAOSTAT data (looked up 15 August 2022: time series 1990 - 2020) and the data used in the 2023 submission shows numerous deviations: between 1990 and 2020 only about 13 % of the FAOSTAT data is consistent with the German data (even though animal numbers rounded to 100 animals are taken into account).
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The Food and Agriculture Organization of the United Nations (FAO) publishes worldwide animal numbers in its internet database [FAOSTAT](https://git-dmz.thuenen.de/vos/EmissionsAgriculture2023/-/wikis/9-Literature#fao-food-and-agriculture-organization-of-the-united-nations). The German data in FAOSTAT basically come from the Federal Statistical Office in Germany, the data source that is also the basis for the German inventory. However, for cattle, pigs, sheep, goats, horses and poultry, the comparison of FAOSTAT data (looked up 15 August 2022: time series 1990 - 2020) and the data used in the 2023 submission shows numerous deviations: between 1990 and 2020 only about 13 % of the FAOSTAT data is consistent with the German data (even though animal numbers rounded to 100 animals are taken into account).
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The main reasons for the sometimes big differences between FAOSTAT and the German data are mainly entries in FAOSTAT under false years and an seemingly unsystematic FAOSTAT approach to the closure of data gaps. In the following the main findings of the data comparison are listed.
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