Phenotypic demonstrate and variability reproduction characteristics of gray Alp cow race cattle

Abstract

The research was aimed phenotipyc demonstrate and variability growth cows of gray Alp race cattle in the first fertilization and the first calving, during of pregnancy and the weight 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 of 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 statically highly significant (P lt 0,01), and the days of pregnancy are independent from growth in the first fertilization and first calves (P lt 0,05) are not statistically significant.

U radu je ispitivana fenotipska ispoljenost i varijabilnost uzrasta krava sive alpske rase goveda pri prvoj oplodnji i prvom teljenju, dužina trajanja graviditeta i masa teladi pri rođenju, kao i međuzavisnost ovih osobina. Ustanovljeno je da je uzrast krava pri prvoj oplodnji iznosio prosječno 639,29 dana, a pri prvom teljenju 921,29 dana. Dužina trajanja steonosti je bila u prosjeku 285,40 dana sa varijacionim koeficijentom od 0,31%. Prosječna porodna masa teladi je iznosila 32,97 kg sa varijacijama od 22-60 kg. Međuzavisnost između uzrasta pri prvom pripustu, tjelesne mase pri rođenju, dana steonosti, pokazuje da je tendencija promjene tjelesne mase teladi u zavisnosti od uzrasta pri prvom pripustu statistički vrlo visoko značajna (P lt 0,01), a da su dani bremenitosti nezavisni od uzrasta pri prvom pripustu i prvom telenju (P>0,05), što je statistički neznačajno.