The identity (that is, ancestry and breed combination) of 99% of the individuals is not evaluable for non-members of the Tauros Programme, and I have become quite tired of trying to make guesses based on the animals' look what kind of combination they might be, because having experiences in looking at crossbreeds of aurochs-like cattle will tell you it is nearly impossible. However, in some cases where it is a bit less unclear I will share my thoughts/suspicions with you, but at the disclaimer that it could always be something completely different.
Maashorst
©Bert van Zijderveld |
© Marcel Bakker |
© Marcel Bakker |
© Marcel Bakker |
Herpeduin
© Ingrid van Thiel |
© Ingrid van Thiel |
© Ingrid van Thiel |
Keent
Photos by Peter Mulder on FlickR
The photo gallery shows a lot of photos of various animals from Keent, some are pure others are young crossbreeds. Most of the offspring is from Manolo Uno, the Maremmana x Pajuna bull, but the exact combination of the individuals is not determinable for me.
Ziva voda Modra
From link. |
© Michael Köpping |
All in all, I like most of the individuals. Many of them are comparably slender, some of them have elongated snouts and others have a horn volume that is at least not small. Most of them have an authentic colour with a tendency towards a satisfying sexual dimorphism. They do resemble Taurus cattle, which is not surprising that both projects use similar or the same breed (Sayaguesa) and both strains resemble their common ancestor, the aurochs. However, what I still miss is a breed that reliably adds large size and long legs, as most of the cross results so far as much as many of the founding breeds/individuals, lack large body size and many of the bulls could be more long-legged. Also, they might need a boost in horn volume. Although the horns of the individuals of the Czech herds are comparably impressive, they are still smaller than the usual spectrum found in the aurochs, especially considering that we are comparing horn sheaths of the living animal with the fossil and subfossil horn cores of aurochs skulls. Most of the crossbred individuals lack the inwards curve of their horns, the horn tips regularly face outwards. It is not easy to fixate inwards-curving horns in a "breeding-back" herd as this trait is very rare among primitive breeds. This is a universal problem in "breeding-back" herds. The Taurus cattle herd in the Lippeaue has a number of individuals that are good in this respect because it is strongly influenced by a Sayaguesa cow with accurately inwards-curving horns (named Dona-Urraca) and many of the founding Heck cattle and Chianina were not entirely contraproductive in this respect as well. So the Tauros project needs a breed or at least good individuals contributing this trait. They already use Maronesa, which is the breed with the most pronounced inwards-curve in my opinion, which is an advantage. So in order to increase the frequency of aurochs-like inwards-curving horns it might be wise to increase the influence of Maronesa on the herds. They might then need the influence of a truly large and long-legged breed to compensate. The Tauros Programme revealed that they consider using Maltese cattle, a breed where the more primitive herds are truly remarkable regarding body conformation, proportions and skull shape (I hope they are comparable to Chianina in size). They would probably be very beneficial for all of the Tauros herds, but it is not clear whether they have made a serious effort yet to get their hands on individuals or semen from this breed.
However, I think there is no need to hurry or to draw premature conclusions yet. As far as I can tell, the Tauros Programme is still in the "building up quantity" phase, that is, creating herds and breeding sites in various countries and waiting for them to grow. Once the desired quantity level is reached, they can start to focus on quality. Deficiencies that might become evident, like a lack of size or horn volume/curvature, can be fixed in that stage by more stringent selection or the inclusion/increase of the use of certain breeds that add these elements that are missing.