Izvorni znanstveni članak
CATTLE BREEDING PROGRAMME IMPROVEMENT IN CROATIA 19?4.-1987. 1. Phenotype values of bull mothers in Simmental breeding programme in Croatia.
Rudolf Šic
; Veterina meicine, Zagreb, Republika Hrvatska
Ivo Karađole
; Veterinarski fakultet, Zavod za stočarstvo, Zagreb, Republika Hrvatska
Pero Božić
; Centar za reprodukciju u stočarstvu Hrvatske, Zagreb, Republika Hrvatska
Dubravko Viduč
; Centar za reprodukciju u stočarstvu Hrvatske, Zagreb, Republika Hrvatska
Nikola Dasović
; Centar za reprodukciju u stočarstvu Hrvatske, Zagreb, Republika Hrvatska
Zvonimir Štefanac
; Centar za reprodukciju u stočarstvu Hrvatske, Zagreb, Republika Hrvatska
Sažetak
When we want to talk about the aims and purpose of a specific and desired breeding proqramme in some population of cattle, we are supposed to know the phenotype values of the very first population i.e. herds of parent breeding cows. By establishing these values we establish the basis of the breeding programme. According to the demand of the market we also declare the intention, the way and the purpose, and with the adequate choice of sires we try to realise the best we can our aim with regard to pheno- and genotype value of the new male and female generation. The purpose of this debate and of the research was to establish the phenotype characteristics of the herd of bull mothers according to the specific standards and rules of breeding and selection codex for the population of the Croatian Simmental bull. The established values of the phenotype of 167 BM about the aqe at the moment of selection, and duration of their use show that the selected breeding cows satisfy all the requirements regarding the phenotype i.e. measurements of the height of withers,
depth of chest and the evaluation of class. The total number of calves per one BM (8,734) confirms both high age and satisfactory fertility, although the intercalving period is a little higher than desired (444,4 days in comparison to 400,0 days). The number of selected male calves per one BM (2,346 on average) for the performance, test station is satisfactory too. After establishing the results regarding milk yield as well as milk fat per BM before and during exploitation we shall be able give our final evaluation on the value characteristics of 167 BMs, mothers of 196 sons joining the herd of bulls at "Središnji
zavod" in the period of 14 years.
Ključne riječi
Hrčak ID:
162265
URI
Datum izdavanja:
27.11.1991.
Posjeta: 563 *