Phenotype correlations of linear assessment scores of type and production traits of Simmental cows
Determining the degree of correlation between two or more traits depends to a large extent on their manifestation. The knowledge of genetic and phenotypic correlations between body characteristics of the animal and product characteristics can help define the breeding goal, but also to define and har...
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Veröffentlicht in: | Biotechnology in animal husbandry 2018, Vol.34 (1), p.59-68 |
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Sprache: | eng |
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Zusammenfassung: | Determining the degree of correlation between two or more traits depends to a
large extent on their manifestation. The knowledge of genetic and phenotypic
correlations between body characteristics of the animal and product
characteristics can help define the breeding goal, but also to define and
harmonize the assessment criteria. Although the phenotypic and genetic
correlations between the traits of body development and type and the milk
yield 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
selection programs are more comprehesively defined. The examination of
phenotypic correlations of linear assessment scores of the type, milk and
fertility traits was performed on a total of 303 cows of the Simental breed
in the first three lactations. The examination of phenotypic correlations
included the following milk performance properties in the first three
standard lactations: milk yield, milk fat content, milk fat yield, yield of
4% corrected milk; also fertility traits: age at current calving and service
period in each lactation; while the linear type scoring included a group of
traits: type or frame, muscularity, fundament, udder. |
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ISSN: | 1450-9156 2217-7140 |
DOI: | 10.2298/BAH1801059P |