Evaluation of heifers of Fleckvieh breed, imported to the republic of Armenia from the Federal Republic of Germany, according to the milk productivity of their ancestors

Armenian National Agrarian University, Yerevan, Armenia

^* Corresponding author: naz3@mail.ru

Abstract

The genealogy analysis allows to predetermine the productivity and pedigree traits of proband animals based on the indicators of their ancestors. The analysis of ancestral milk productivity in the genealogy of 20 proband heifers of German fleckvieh breed shows that the average milking of heifers’ mothers is 8284 kg which is lower than the milking of the mothers of heifers’ mothers by 706 kg or 7.9% and lower than the milking of the mothers of heifers’ fathers by 1542 kg or 15.7%. 18 heifers were obtained by heterogeneous mating and 2 heifers were obtained by homogeneous mating. After the birth, the proband heifers will demonstrate high genetic capacity of dairy properties- 9055kg, but the generation received from them has been foreseen to be of low productivity based on the seeding with bulls of lower productivity. We propose to consider milk fat+lactalbumin quantity as the main property of selection and mating and apply homogeneous mating for creating future generations, stabilize the desirable selection traits by increasing their transferrable power generation by generation, and apply individual heterogeneous mating for cows with 5000-6900 kg lactation by using bulls with 752 kg milk fat + lactalbumin capacity.