Variability of fundament traits in primiparous simmental heifers
Visual evaluation and recognition of dairy traits of cows are preliminary indicators of milk yield, longevity, and reproductive ability of the individual animal, which is very important from the aspect of the economics of milk production. The deficiencies in the fundament traits lead to poor product...
Gespeichert in:
Veröffentlicht in: | Biotechnology in animal husbandry 2018, Vol.34 (3), p.313-322 |
---|---|
Hauptverfasser: | , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | Visual evaluation and recognition of dairy traits of cows are preliminary
indicators of milk yield, longevity, and reproductive ability of the
individual animal, which is very important from the aspect of the economics
of milk production. The deficiencies in the fundament traits lead to poor
production, poor health and premature culling of cows from the herd. The
paper examines the frequency of preferred scores of a certain trait in the
first calving heifers according to the housing method (animals reared by
individual agricultural producers and farm animals) and their origin
(domestic and imported animals), as well as the impact of these two factors
on the observed properties. Four fundament traits were analysed: the position
of the hind legs, the development of the hocks/joints, the pastern joints and
the height of the feet on a total of 954 first-calving Simmental heifers.
Observed by the housing method, the higher frequency of the preferred scores
for all of the fundament traits, was achieved by the farm cows, while
according to the origin of the cows, the higher frequency of the preferred
scores for all of the fundament traits was realized by imported animals in
relation to domestic cows. The influence of the factors of the housing method
and origin of animals examined by ?2 test on all the tested linear scores
(frequency of scores) of the fundament traits was statistically very
significant (p?0.001), while the analysis of the variance (F test) determined
high significance (p?0.001) of the interaction between the origin and housing
method on the height of the feet, as well as significant effect (p?0.05) on
the position of the hind legs, while on other linear scores of the fundament
traits it did not exhibit statistical significance (p>0.05). |
---|---|
ISSN: | 1450-9156 2217-7140 |
DOI: | 10.2298/BAH1803313N |