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GENETICS: The success of Horse Achiever.

GENETICS: The success of Horses Achiever. This is because? (the empirical scheme of Brucce Lowe)


The explanations for the success of Bruce Lowe empirical scheme, which produced excellent results in obtaining breeding horses in the late nineteenth century, are as follows: 1 - The success of the winning horse is in fact the choice of foal's mother and grandmother pat ... erna, through their maternal grandfather and his paternal great-grandfather. 2 - For chromosomal half paternal great-grandfather, passed to his daughter, even with the entire X chromosome from their father and grandfather chromosomal half, including all their X chromosome passes to his daughter. In fact in evaluating the quality of stallions maternal grandfather and paternal great-grandfather on his mother, evaluates both mares. He would have been easier to evaluate the two mares, which surely must have made an interesting role in the tracks. What happens is that the breeders of race horses and often all kinds of breeders forget the campus of mares. They think that to have a good stallion everything is solved. If making also uses a generational inbreeding 3 and 4, ie in the pedigree, the paternal grandfather and maternal grandfather is the same stallion, with his daughters, two half sisters, we produce according to certain empiricism Table Felch, the colt has gained 37.50% (25% + 12.5%) blood outstanding stallion selected. We clarified that according to this table with some alignment and did not speak of genes that a child inherits 50% of the blood of each parent and 25% from each grandparent and so on. Inbreeding is more successful than was obtained in racehorses, because if it does appear closer the negative effects of inbreeding depression, with consequent loss of vigor. While the 3-4 is a refreshing consanguinity of blood to cross the same male with different females, but the resulting half-sisters of the same product, are likely to make a great stallion's genetic background selected by the resulting foal's mother and his paternal grandmother. 4 - The importance of breeding females is due to the following factors: a) Only females inherit the outstanding male X chromosome. The only child and that practically carries a few genes. So the children will lose all male chromosome! That is why you will lose all parental lines worse with each generation. Take the case of our great stallion Congreve, who follows in his great son Bewitched, but inexorably dying in their last descendant and representative generational Uranus. Instead Bellotte produce her daughter, with the famous Sind Academic, twice winner of the Gr Pr C. Pellegrini, even winning the Grand Penny Post, in it. The maternal line is still in effect. b) In addition to the heritability of quantitative factors polygenic action or product generally have higher heritability in females than in males. c) Due to the stamp printed by the mother in her puppies, behavioral factors should be evaluated primarily on the mother. For some large breeders, when they go to a cabin, or kennel stud farms, primarily interested in evaluating the same females. The English say rightly that the best female in her kennel is better than the best female you can buy outside. Nobody sells his best females. Rather good for breeding male can always purchase either by a son, service or semen. Even the big breeders are always looking at the pedigrees of successful breeding, the female founder and continuity of women in their pedigrees. For one thing the Arabs made their famous horse race with seven maternal lines that still exist!. Summing over the Lowe scheme we can say that the good stallions passed their good qualities logically through their daughters, as their children are less likely to inherit all the baggage genetic father, while their grandchildren through their daughters, have more likely. Rasmussen Factor (RF) In 1997 Leon Rasmussen published the book Inbreeding in superior families by different individuals. This theory supports the importance of the mares in the breeding and inbreeding recommended for those who have shown special gift to pass on their qualities to their offspring. It was found that those horses who have the 'RF' stand by their results both at racetracks and playback. Nicks highlights the success that the crossing of specific individuals or blood flows in different countries and under different circumstances. Some of the most popular nicknames are 'Blushing Groom' / 'Nijinsky', 'Nureyev' / 'Roberto', 'Northern Dancer' / 'Mr. Prospector '. Maternal families late nineteenth century the Australian Bruce Lowe developed a numbering system based on classification and maternal origin of the winning horses of the English classics. Several studies have demonstrated the affinity between different maternal families and the success obtained with the repetition in the first generations of individuals of the same family roots. Dosage The origin of this theory comes from studies of French Vuillier. Years later, Roman Steven dosage created the system as we know it today: a system for evaluating the pedigree of an ISP that tries to quantify the potential capabilities of an exemplary career is based on the occurrence of certain stallions in the first four generations. Each chief breed is classified in category Brilliant, Intermediate, Classic, Solid and Professional. Marianna Haun X factor in 1997 published his book in which he alluded to the importance of the heart in Thoroughbred and that this genetic trait is related to the X chromosome, mares and transmitted by those children of those who had a heart larger than usual. Genetics applied to PSI in the English thoroughbred genetics is very rough, with the goal selected ultra race in which the defects are eliminated with the passage of successive generations under the test of racing. These considerations about genetics in racehorses is founded on two pillars: the choice of base material (mares and stallions for breeding potential quality) and the cross, which requires selecting the right stallion for each mare