However, data for Y-chromosome DNA tell a different story with a paternal genetic contribution of Bos primigenius on the domestic population ( Götherström et al., 2005; see discussion in Bradley and Magee, 2006). Furthermore, questions about genetic contributions of wild aurochsen populations become even more complicated with another regional study that focuses on mtDNA sequences from Italian aurochsen and modern cattle ( Beja-Pereira et al., 2006). These data suggest some levels of introgression in Italy that are further RAD001 interpreted as evidence for local domestication

events in some parts of Europe at some point in the past, although not necessarily during the Neolithic. Genetic introgression is also supported CH5424802 by zooarcheological metric data from Central Europe, where crossbreeds of wild and domestic cattle have been suggested

for the Eneolithic ( Kyselý, 2008). Since domesticated cattle and wild aurochsen co-existed in Europe for millennia, it would not be surprising to have these genetic influences. The case of sheep and goats is quite different. Although mountain goats (Capra pyrenaica), and ibex (Capra ibex) were present in Europe during the early Holocene, domestic goats (Capra hircus) and sheep (Ovis aries) were introduced to the region from the Near East ( Nguyen and Bunh, 1980 and Pérez, 2002) and have no direct endemic progenitor species or close relatives. In comparison to cattle, sheep and goats have much lower spatial feeding requirements ( Table 3). Goats are general browsers with diets more similar to deer, preferring shrubbery and weeds to grasses. Sheep, however,

are grazers and, like cattle, prefer to eat grasses and short roughage as opposed to the woodier stalks of plants that goats choose. As a result, mixed herds of PIK3C2G sheep and goats have complementary dietary preferences. Both species require a grazing area of 0.1–0.15 ha per month, approximately 1/10 of the area requirements for cattle. Goats lactate longer than sheep, and Redding, 1981 and Redding, 1982 estimates the daily average quantity of milk from either species is similar, but sheep milk is more energy-rich ( Table 3). Finally, wild boar (Sus scrofa), the progenitor of the domestic pig (Sus domesticus) is found throughout the European continent and remains a popular game animal. It is very difficult to separate the two species in archeological assemblages, and the distinction is based largely on osteological metric analyses. Genetic analyses indicate a very complex picture with introduced domesticates, wild boar genetic introgressions, and independent domestication events throughout prehistory ( Larson et al., 2007 and Ottoni et al., 2012). In the case of the Balkans, domestic pigs were introduced from the Near East and may have competed with their wild counterparts for food. The primary benefit of keeping pigs lies in their high meat yields and omnivorous diet.