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The largest number of certified descendants of stallions and mares in the lines of the ancestors of stallions-producers Attila 3101 T (n=104) and Hoyus 3939 T (n=44).

In the Attila 3101 Т line of the heir to the breeding stallion Akbar, born in 2000 (n=30), in his first son Khramovnik, the Dcgm allele was passed on to his 11 descendants, and the Ddk allele was not passed on to anyone. In Everest’s second stallion son, the Ddk allele was passed on to 13 offspring, and the Dd allele was passed on to one offspring. It was found that in other lines, alleles are transmitted more or less chaotically, that is, in different ways. There are four homozygous offspring in the Attila 3101 T line, and one homozygous offspring each in the Hoyus 3939 Т and Factor lines.

The highest frequency of the Dcgm allele gene was in the lines of the Foal progenitor Factor (q=0.600). At one level, it was high in the line of the ancestor of the stallion-producer Attila 3101 Т, his descendant of the stallion-producer Everest, in the lines of the ancestors of the Agronom and Ukhke 573 TA (q=0.500).

The gene frequency of the Ddk allele was high in the lineage of the ancestor of the breeding stallion Hingstar 317 T (q=0.500) and Attila 3101 Т from the heir of the breeding stallion Everest (q=0.441). The rare Dcegm allele was found only in the lineage of the ancestor of the stallion-fruit Hallis 348 T (q=0.167).

The highest level of polymorphism is in the Murmansk line (Ne – 5,538), the average level in the Hoyus 3939 T line (Ne – 4,809) and in the Atilla 3101 Т line (Ne – 4,399). The highest coefficient of expected homozygosity in the Factor line (Ca – 0.460) and Agronom line (Ca – 0.389). The highest rate of realization of homozygosity is in the Ukke 573 TA line (W – 0.118) and the Factor line (W – 0.087). Homozygote deficiency in the Factor line (-0,420) and the Agronom line (-0,389).

The identified differences in the spectrum of active alleles of polymorphic blood group systems indicate that each studied horse genealogical line has a certain “genetic passport”, and this creates a practical information base for maintaining lines and in general breeds in Ukraine under genetic control.

The information and data contained here can be used to further improve and preserve horse breeds, conducting work on breeding records and exchanging genetic material with the originator country.

 

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