Phenotypic demonstrate and variability [of] reproduction characteristics of Grey Alp cow race catlle [i.e. cattle] | Fenotipska ispoljenost i varijabilnost reproduktivnih osobina kod krava sive alpske rase goveda
2006
Lalović, M., Poljoprivredni fakultet, Istočno Sarajevo, Republika Srpska (Bosnia and Herzegovina) | Mekić, C., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Pandurević, T., Poljoprivredni fakultet, Istočno Sarajevo, Republika Srpska (Bosnia and Herzegovina)
The research was aimed phenotypic demonstrate and variability of age of cows of Grey Alp race in the first fertilization and the first calving, duration of pregnancy and the weight of calves at birth, like interactive this characteristics. It was noted that the average age during the first fertilization amounted to 639.29 days, and that over the first calving 921.30 days. The average duration of pregnancy was 285.40 days with coefficient of variability 0.31%. The weight of both sexes at birth averaged 32.97 kg, with variability 22-60 kg. Interactive between growth at the first fertilization, the weight at birth, the days of pregnancy, show that the changes in weight calves are not independent by growth of first fertilization are statistically highly significant, and the days of pregnancy are independent from growth in the first fertilization and first calving are not statistically significant.
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