THE BREEDING AND ECONOMIC VALUES OF RELATED LEADER 1926780 GROUP BULLS IN UKRAINIAN RED AND WHITE DAIRY BREED
The results of breeding and economic value of related group Leader 1926780 bulls, which are used in Ukrainian red and white dairy breed of cattle are given an account. It has been determined, that the bulls of this group keep the breeding value at complex of milk productivity traits on high level during 8–11 years and well transfer these traits by inheritance to the native offspring. The initial breeding value for the daughter`s milk productivity of bulls of foreign selection was +400 – +1406 and domestic – +748 and +1261 kg. Along with a high level of breeding value the bulls of this related group are characterized by high contents of fat and protein in milk. Thus, the fat content in milk of the daughters of bulls (10 heads), which ware estimated in Germany, was at the level of 4.16–4.55% and protein content – 3.28–3.53%. The pedigree value of bulls by these traits ware +0.10 – +0.59 and +0.02 – +0.35% and exceeds the standard of Ukrainian red and white dairy breed on 12.5–30.0 and 9.1% respectively. Typical, that the bulls of domestic breeding inherit high fat content in milk (breeding value is +0.02 – +0.18%) and protein (+0.02 – +0.15%). During a long-term using, the breeding value of all bulls is decreasing annually due to increasing the level of genetic trend of milk productivity in herds, remains at a positive level and provides improvement of the animals of the breeding herds in which they are used, according to the complex of breeding traits. The milk productivity of the 15 first-born cows-daughters of bull Golf, for 305 days of lactation in the state enterprise "Gontarivka" constituted 6113 kg with 4.03% fat and 3.33% protein, while in the "Agrosvit" breeding plant from each of 41 first-born Golf`s cows was obtained at 6893 kg of milk with 4.01% fat content and 3.38% protein.The breeding value of this bull is +526 kg milk, +0.31% fat and +0.28% protein, which prevails breed standard for milk yield on 91–115; fat content 8.3–9.0; and protein by 0.1–2.4% respectively.
The bull Konbeo Red DE 579810507 was used simultaneously with the Jornado Red DE 114386106, whose breeding value was +1100 kg +0.02% +42 kg +0.0 +33 kg at the farm «Kolos» breeding plant in the Vinnitsa region. The milk productivity of the Konbeo daughters during the first two lactations exceeded the compararies at 334–392 kg of milk, the fat content +0.03 – +0.04 and the protein at +0.02–0.04%. Among the bulls of domestic breeding should be noted Agrus Red UA 320080992043, was estimated in 2015 SI +706 (94 d. – 8739 kg – 3.96% fat – 347 kg of milk fat; 3.17% protein and 277 kg of protein). The breeding value was: +744 kg – +0.18% +44 kg +0.02% and +18 kg. The economic efficiency of using the bulls-improvers of the complex traits of the related group Leader's 1926780 dependent from the level of the breeding value of the bull and the number of received daughters and varied from 223.2 to 1361.8 thousand UAH.
According to the number of animals, genealogical structure, level of the influence to the breed`s consolidation, it is possible use wide this group of bulls in the breeding herds of the Ukrainian red and white dairy breed and to create new bloodline with high content fat and protein in milk.
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