Description: The objective of this study was to determine the reproductive performance in Boer goats under semiintensive management in north-western Croatia over three consecutive years. Sixty Boer does, aged 2 to 6 years, were divided into three groups. A total of 1.80 kids were born per doe (435 newborn in 242 pregnancies). Boer goat fertility was 93.44 percentage. Does with single kids accounted for 22.53 percentage (n = 98), with twins 49.20 percentage (n = 107), triplets 18.62 percentage (n = 27), quadruplets 7.35 percentage (n = 8) and quintuplets 2.29 percentage (n = 2). The average birth weight of Boer kids was 3.48 +- 0.04 kg (1.70 kg to 5.4 kg). The birth weight of goat kids in pluriparous Boer does was signifi cantly (P<0.05) higher in comparison to kids in primiparous does by gender. The birth weight of Boer male goat kids was significantly (P<0.05) higher than female Boer kids. There was no impact from goat age, number of kiddings and birth weight. More than 76 percentage of Boer does delivered in the winter and spring. It is supposed that after transferring from the southern to the northern hemisphere, Boer goats have gradually acclimated to a new seasonality