Original scientific paper
COMPARATIVE VALUES OF BREEDING TRAITS OF DAMS TO THEIR DAUGHTERS (F1) AND GRAND DAUGHTERS (R1) IN YUGOSLAV SIMMENTAL x RED PIED HOLSTEIN CROSSING
Božidar Maslovarić
; Agricultural University Novi Sad, Novi Sad, Serbia
Dragutin Grujin
; Farm "Vojvodina" Novo Miloševo, Serbia
Ivan Trajkov
; Farm "Vojvodina" Novo Miloševo, Serbia
Muharem Selimović
; Farm "Vojvodina" Novo Miloševo, Serbia
Boško Pošarac
; Farm "Vojvodina" Novo Miloševo, Serbia
Milomirka Perunčić
; Farm "Vojvodina" Novo Miloševo, Serbia
Sofija Rodjenikov
; Farm "Vojvodina" Novo Miloševo, Serbia
Abstract
The Livestock Institute works on the project "Production of new genetic capacities of Domestic Spotted breed for high milk production, where the cum of Domestic Spotted breed are crossed with the bulls of Red and White Holstein Friesian breed. The crossing is performed up to R1 generation, i.e.75% of the influence of Red and White Holstein Friesian. In this paper the reproduction traits of mothers of Domestic Spotted breed are presented, with their daughters, F1 generation, and granddaughters, R1 generation. The following results have been obtained:
The mothers calve at the age of 1048.25 days, the granddaughters, R1 generation, at the age of 915,92 days, while the daughters, F1 generation, calve at the age of 897.06 days. All the differences are highly statistically significant (P<0.001).
In the first three calvings the longest gestation period was found in mothers, 285.01, 282.83 and 282.61 days. In daughters of F1 generation the gestation period lasted 278.97, 279.36 and 279.38 days, while in granddaughters, R1 generation, it lasted 279.60, 280.58 and 279.35 days, respectively. The differences are highly (P<0.01) and very highly significant (P<0.001).
Keywords
Hrčak ID:
161997
URI
Publication date:
22.9.1990.
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