The Auerrind project assembled new breeding herds in Lorsch, Wildpark Schwarzach and Bielefeld and published photos on Facebook:  |
| © Lauresham on Facebook |
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| © Lauresham on Facebook |
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| © Lauresham on Facebook |
The upper two photos show a herd composed of the three adult Sayaguesa x Chianina cows, the Chianina x Watussi cow, two heifers (I don't know their combination but maybe they are Sayaguesa x Chianina too) and one young bull. The bull is, according to its ear tag number, the (Sayaguesa x Grey) x (Sayaguesa x Watussi) bull, a fullblood brother of Doro. I am looking forward to see how his horns will develop; it is impossible to judge the curvature at that young age, but the massive horn bases suggest that the horns will grow large. The Chianina x Watussi cow (on the second photo, far left) developed good as well, her horns are slightly reminiscent of that of the Vig bull. The third photo shows a Sayaguesa x Chianina bull and two cows, which, I guess, could be Sayaguesa x Maremmana cows.
It is great to see the project progressing and trying all those combinations. These two new herds are composed of crossbreeds exclusively, what means that the offspring will descend from crossbreeds on both parental sides - this is where the real breeding starts, as the quality of the offspring will depend on which alleles get passed on by the crossbred parents.
Sind die beiden jüngeren Tiere Rinder oder wäre es auch möglich, dass es frühe Kälber aus diesem Jahr sind? Die Sayaguesa x Chianina Kühe waren ja mit dem Maremmana x Sayaguesa Bullen eine Zeit lang zusammen?
ReplyDeleteDas ist möglich, ich müsste da wohl nachfragen bzgl. der Färsen.
DeleteThere is no apparent valid breeding scheme based on genetic principles here. If you make a hybrid between two breeds which you think have complementing wildtype genotypes for the desired wildtype traits, you would best get the complementing wildtype alleles together in homozygous condition by mating F1 X F1 and sort through a huge number of F2 progeny. Why mate an F1 offspring with an F1 offspring from another cross? The matings displayed here seem like an "Oh, lets try this and see what happens" approach.
ReplyDelete