Evaluation of hereford bull herd structure
https://doi.org/10.31677/2311-0651-2024-46-4-49-59
Abstract
In the conditions of Altai region, within the framework of the activity on breeding and selection of Hereford cattle, imported in 1960, the evaluation of bulls on their own productivity; bulls-producers on the quality of offspring; lines; breeding groups has been carried out. At formation of groups it was established that bulls of the first selection group show high productive qualities. The study of correlation coefficients of traits allows to reveal a strong relationship between live weight and average daily gain (r = 0,89), as well as index A (r = 0,95). The comparative evaluation of sires on the quality of progeny shows that bulls Dantes 71103, Jack 10379602602, Dubai 51007, Texas 53005, Ugolyok 89005, Funduk E 61043 are improving sires and selection index A in their sons is 102-105. At estimation of genealogical structure the best indexes of selection index A within 102-105 have bulls belonging to lines J-Bar-Universe C02912439, Jack 10379602602, Super Duty C0281216, Tortuga C02897246, Dan Hidalgo C02923622. Also in the studied population the strength of influence of the line and the bull-producer on the variability of traits in the offspring is comparable, and low values of the inheritance coefficient indicate a low level of influence of the fathers’ genotype on the variability of traits in the offspring, which indicates consolidation and homogeneity of the herd. The highest inheritance coefficients were observed for live weight at 15 months and meat qualities (h2 = 23,80-54,08 %). The population of Hereford cattle has a high selection potential in the aspect of evaluation of gene pool and phenofund of animals, and to increase genetic variability it is necessary to organize selection of unrelated animals.
Keywords
cattle,
Hereford breed,
bulls,
breeding,
selection,
genealogical structure,
line,
type,
live weight,
average daily gain
About the Authors
A. S. Durov
Siberian Federal Scientific Center of Agrobiotechnologies RAS
Russian Federation
Russian Federation
A.S. Durov, PhD in Agricultural Sciences
V. A. Pleshakov
OJSC “MyaSPleM Altai”; JSC Barnaulskoye Plempredpriyatie
Russian Federation
Russian Federation
V.A. Pleshakov, PhD in Agricultural Sciences
V. A. Soloshenko
Siberian Federal Scientific Center of Agrobiotechnologies RAS
Russian Federation
Russian Federation
V.A. Soloshenko, Doctor of Agricultural Sciences, Academician of RAS
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Review
For citations:
Durov A.S., Pleshakov V.A., Soloshenko V.A. Evaluation of hereford bull herd structure. Innovations and Food Safety. 2024;(4):49-59. (In Russ.) https://doi.org/10.31677/2311-0651-2024-46-4-49-59
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