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TaurOs Project

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Title: TaurOs Project  
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Subject: Aurochs, Extinction, Animal breeding
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TaurOs Project

Maremmana x Pajuna cross bull
Main breeds used in TaurOs Project. Upper row from left to right: Limia, Maremmana primitivo, Maronesa. Lower row: Podolica, Sayaguesa, Pajuna. Down below, the phenotypic and ecologic breeding target, the Aurochs.

TaurOs Project or Tauros Programme is a cooperation between the Dutch foundation Stichting Taurus and universities such as the Wageningen University and Research Centre. It is an international effort to breed a type of cattle that resembles the extinct aurochs, the wild ancestor of domestic cattle to a large extent.

The project largely uses hardy cattle breeds with optic resemblance to the extinct aurochs. By crossbreeding and selective breeding it tries to establish similarity to the aurochs. The longterm goal is to release these Tauros cattle into rewilding areas.


Megaherbivores are considered important tools of nature conservation in maintaining the biodiversity of open or park-like landscapes without human interference. Therefore, it is planned to reintroduce large game in several reserves to recreate the natural dynamics of the European ecosystems. The aurochs was one of the most important European ungulates, but was hunted to extinction over most of Europe in the Middle Ages. Despite attempts at conservation, the last known pure-bred auroch died in Jaktorów Forest, Poland in 1627.[1] Thus, so-called rewilding has to work with its domesticated descendants, of which several breeds are hardy and robust enough to fill this gap. In many grazing projects, especially in Germany, Heck cattle is used, together with Galloways and Highland cattle. Heck cattle originated in the 1920s as an attempt by Lutz and Heinz Heck to breed an aurochs look-alike from several cattle breeds. Heck cattle turned out to be a hardy breed, but is found to be considerably different from the aurochs in several aspects.[2]

TaurOs Project formed to achieve a breed of cattle which is closer to the aurochs than previous breeding back attempts. This is based on the idea that original features of the aurochs are still present in some, less-derived cattle breeds and can be re-united by crossbreeding and selective breeding to the largest possible degree. Stichting Taurus has been running grazing projects with hardy cattle and horses for years and bought numerous cattle breeds found to be authentic for the project from southern Europe.[3]

Methods and goal

Limia Cattle bull and cow in the Netherlands.

TaurOs Project uses very hardy cattle breeds, which should preferably resemble the aurochs to a useful extent. Crossbreeding and selective breeding with such breeds should create new lineages which are hoped to come close to the aurochs as much as possible and are fit for being released in European wild reserves. Not only the phenotype and robustness are in the focus of breeding, but also genetic information of the aurochs which might be preserved in these breeds is considered. There are variations within each breed, so selection criteria are necessary to select the individuals that are included on the project. Accordingly, studies are running parallel under the umbrella of the project, e.g., to evaluate possible introgression of wild aurochs into the European cattle population. Furthermore, the food choice and behaviour of the used breeds is examined.[4]

The breeds which are used for crossbreeding mostly stem from the Iberian Peninsula and Italy. For example, these are Sayaguesa Cattle, Pajuna Cattle, Italian Podolica and Maremmana primitivo. Although claimed to be genetically close to the Auroch the Lidia breed (Spanish fighting bull) was not used for the project due to its aggressive behaviour.[5] These primitive breeds decreased in numbers during the last decades, some are highly endangered. Scottish highland cattle is used as well, because this breed has a long and dense coat and is very hardy. Several cross individuals have been born already.[6]

It is expected that there will be about 100 animals by 2015. Members of the project hope that the Tauros cattle will one day be able to move freely in wild herds in European nature areas just as red deer, wild boar, and wolves.[7][8]

Meanwhile, the genetic relationship between a number of cattle breeds and the aurochs is examined.[9]

Breeds in use and present crossbreeding results

Sayaguesa cows in Keent

Following robust cattle breeds are presently used:

Several crossbred individuals have been born already, the oldest in 2010. A young bull which is the result of crossing Maremmana primitivo with Pajuna already has the colour characteristics of the aurochs, having a black colour with a light eel stripe and a white muzzle ring.[10] Early in 2013, there were 120 cross individuals, some of them belong to the second generation already.[9]


See also


  1. ^ Rokosz’, Mieczyslaw (1995). "History of the Aurochs (Bos Taurus Primigenius) in Poland" ( 
  2. ^ Cis Van Vuure (2005). Retracing the Aurochs: History, Morphology & Ecology of an Extinct Wild Ox. Pensoft Pub.  
  3. ^ "Project TaurOs || Stichting Taurus". Retrieved 2012-03-10. 
  4. ^ "The Aurochs is coming back to European forests and grasslands | European WILDLIFE". Retrieved 2012-03-10. 
  5. ^ "2012 – when the Tauros started growing wings". Retrieved 2012-04-09. 
  6. ^ "Nieuws || Stichting Taurus". Retrieved 2012-03-10. 
  7. ^ "Website ark - Oerrund keert terug". 2011-11-22. Retrieved 2012-03-10. 
  8. ^ "Uitgestorven oerrund komt terug naar Limburg". Retrieved 2012-03-10. 
  9. ^ a b, 9. Januar 2013. Abgerufen am 14. März 2013 (englisch)2012 – when the Tauros started growing wings.Ronald Goderie:
  10. ^ Brabants Landschap: Het Taurus-rund op Keent. 2010.
  11. ^ Stichting Taurus: „Nieuws. (Zoek: Keent).“ Abgerufen am 17. Juni 2013 (niederländisch)
    Panoramio: „Project Tauros bij Keent.“ Abgerufen am 17. Juni 2013 (deutsch)
  12. ^ ARK Natuurontwikkeling: „TaurOs van start met toekomstig oerrund.“ Abgerufen am 17. Juni 2013 (niederländisch)
    Stichting Taurus: „Nieuws. (Zoek: Kempen~Broek).“ Hierin insbesondere: „Nieuw terrein voor de Tauros in Kempen~Broek. 25-11-2012“. Abgerufen am 17. Juni 2013 (niederländisch)
    Panoramio: „Tauros kalfje.“ Foto mit Karte und Koordinaten vom Standort Kempen-Broek. Abgerufen am 17. Juni 2013 (deutsch)
  13. ^ Stichting Taurus: „Eerste kruisingskalveren geboren. 28-04-2010.“ In: „Nieuws – Archief.“ Abgerufen am 17. Juni 2013 (niederländisch)
  14. ^ Stichting Taurus: „Portugese Maronesarunderen in Keent. 09-03-2013.“ In: „Nieuws – Archief.“ Abgerufen am 17. Juni 2013 (niederländisch)
  15. ^

External links

  • Official website
  • Tauros Project on flickR
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