%0 Journal Article
%T Evaluation of Relationship between Traits of Milk Production and Reproduction Traits in Dairy Cows of the Slovak spotted breed
%A Jozef Bujko
%A Juraj Candr¨¢k
%A Peter Strap¨¢k
%A J¨²lius £¿itny
%J Lucrari Stiintifice : Zootehnie si Biotehnologii
%D 2012
%I Facultatea de Zootehnie si Biotehnologii, Timisoara
%X The aim this work was to evaluate relationships between traits of milk production and reproduction traits in breeding herds of Slovak spotted breed in the period 1992-2010 the results for 10 514 Slovak cows. The basic statistic analysis were analysed using the SAS version 9.1. In the first lactation of dairy cows produced 4 685.18 kg of milk, 193.82 kg of fat and 156.51 kg of proteins. Correlation between evaluated traits of milk production and age at first calving were lower negative and statistically high significant (P<0.0001), scilicet between kgs of milk age at first calving = - 0.06731and correlation between milk in kg with calving interval 1 (r= - 0.06945) and with calving interval 2 (r= - 0.04554) were statistically high significant (P<0.0001). The analyses by the effect on age of first calving was the highest effect of HYS R2= 0.4478 and on calving interval was the highest effect of HYS R2= 0.1526.
%K Slovak spotted breed
%K dairy cows
%K traits of milk production
%K reproduction traits
%K correlation
%U http://spasb.ro/index.php/spasb/article/view/28