Inbreeding Study on the Iranian Arab Horse Population

When conducting breeding programs and to design systems of mating, the inbreeding population percentage changes should be considered. Crosses non-scientific population of the Iranian Arab horses do it that purity has been threatened. This pedigree breed after DNA tests will be recorded by WAHO. To determine the status of inbreeding in the pedigree mentioned horse population based on information of riding federation was studied. According to continuously published since 1976, registered pedigree was done. Pedigree of this research while at the WAHO was recorded. Using software Matvec horses inbreeding coefficient was calculated descriptive statistics and available data with SAS software was investigated. Data size of about 15 generations had. Total population horse and count the number of sires and dams are 2522, 413 and 870 respectively. Based on strain, sex, color, breeding province and breed purity pedigree was classified. The average inbreeding coefficient of the whole population and in inbred horses 2.1 and 7.8 respectively. The highest average inbreeding coefficient related to strain Dejelfan (5.1 percent), female (38.3 percent), black horses (5.1 percent), the province Khuzestan (38.3 percent) and pure Iranian Arab horse race (38.3 percent). The lowest average inbreeding coefficient related to strain Hadban (0 percent), white horses (0.4) and the province of Tehran (0.1 percent). Average coefficient of inbreeding in the population under study than the results of similar studies is not very high. But given the repeated use of one or more stallions limit the kinship relationship with most mares have a continuation of this policy and if the desired population mean inbreeding will increase. Therefore, breeder's horse must for mating horse's specialist's advice to take.