Phenotypic correlation of traits of production and reproduction of simmental cows in different regions of Serbia
Authors
Pantelić, Vlada
Nikšić, Dragan

Maksimović, Nevena

Ostojić Andrić, Dušica

Lazarević, Marina

Mićić, Nenad

Marinković, Miloš

Article (Published version)
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Show full item recordAbstract
The main goal of this research was to examine, using modern
methods, the variability of phenotypic correlations of production performances and
reproductive properties of Simmental cows reared on the farms of individual
agricultural producers, in different breeding areas of the Republic of Serbia. The
study of phenotypic correlations of milk performance and fertility properties in
different regions of Serbia was carried out on a total of 3.056 primi parous
Simmental heifers under control, with lactations completed within one year. The
examined animals were reared on different individual farms, and mainly in very
different conditions of housing and nutrition, depending on the breeding area. The
study of phenotypic correlations included the following milk performance traits:
milk yield, milk fat content, milk fat yield, yield of 4% corrected milk; and fertility
properties: age at first calving and service period.
The results of the study among other things indicate that althou...gh the
phenotypic correlations between the fertility and milk performance properties show
different degrees of variation, they should be taken into account in the final
assessment of the breeding value of the animal, so that the breeding selection
programs are more comprehensively designes.
Keywords:
correlations / regions / milk performance / Simmental breed / fertilitySource:
Biotechnology in Animal Husbandry, Belgrade, 2019, 35, 3, 219-228Publisher:
- Institute for Animal Husbandry, Belgrade-Zemun