This proves that hybrid cows is sexually alot more precocious than just warm cows ( Wassie mais aussi al

This proves that hybrid cows is sexually alot more precocious than just warm cows ( Wassie mais aussi al Data extracted from the analysis of herd records were entered in Excel. The descriptive statistical analysis of the age at first calving (calculation of frequencies, means, standard deviations, minimum and maximum) was made with the XLSTAT software (6.1.9 release). These parameters were analyzed by ANOVA and