74 research outputs found
On the Breeds of Cattle—Historic and Current Classifications
Classification of cattle breeds contributes to our understanding of the history of cattle and is essential for an effective conservation of genetic diversity. Here we review the various classifications over the last two centuries and compare the most recent classifications with genetic data. The classifications devised during the 19th to the late 20th century were in line with the Linnaean taxonomy and emphasized cranial or horn morphology. Subsequent classifications were based on coat color, geographic origin or molecular markers. Several theories were developed that linked breed characteristics either to a supposed ancestral aurochs subspecies or to a presumed ethnic origin. Most of the older classifications have now been discarded, but have introduced several Latin terms that are still in use. The most consistent classification was proposed in 1995 by Felius and emphasizes the geographic origin of breeds. This is largely in agreement with the breed clusters indicated by a biochemical and molecular genetic analysis, which reflect either groups of breeds with a common geographic origin or single breeds that have expanded by export and/or crossbreeding. We propose that this information is also relevant for managing the genetic diversity of cattl
Allgemeine und besondere Auflösungen der in Uflakkers Algebraischen Exempelbuche vorkommenden Aufgaben, denen noch andere beygefügt worden
18) Hat der Vielfra f noch in der Neuzeit in Norddeutschland wild gelebt?
Volume: 8Start Page: 219End Page: 22
6.) Das geologische Alter der B\ue4ren- und Vielfra freste
Volume: 11Start Page: 317End Page: 31
Beitrag zur Kenntnis der nordafrikanischen Schakale nebst Bemerkungen \ufcber deren verh\ue4ltnis zu den haushunden, insbesondere uordafranischen und alt\ue4gyptischen Hunderassen,
Il Cammello; I Reparti Cammellati. Von Massimo Adolfo Vitale. Rom (ohne Jahreszahl). 294 S. mit 47 Abbildungen. Lire
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