Some of reproduction traits of Istrian cattle breed

Istarsko govedo je jedna od autohtonih hrvatskih pasmina goveda na koju se krajem XX. stoljeća usredotočio interes stručne i šire javnosti, nakon što se ustanovilo da je postala veoma rijetka. Cilj istraživanja je utvrđivanje reproduktivnih odlika istarskog goveda, umatičenih u bazi Hrvatskog stočarskog centra za razdoblje od 1994. do 2004. godine. Obrađeni su pokazatelji za 401 kravu s evidentiranim teljenjem. Prva koncepcija nastupila je u prosječnoj dobi od 20,3 mjeseci, a prvo teljenje je uslijedilo s 29,8 mjeseci. Gravidnost je prosječno trajala 291,8 dana. Kod krava koje su nosile žensku telad gravidnost je bila kraća za 1,4 dana. Prosječno trajanje servisnog razdoblja iznosilo je 156,2 dana, a interval teljenja 448,2 dana. Prosječna životna dob krava izlučenih iz uzgoja je 14 godina, dok je svaka izlučena krava prosječno u svom životu dala 7 teladi.The Istrian cattle is one of the autochthonous Croatian cattle breeds which, at the end of XX century, was attracting attention of profesional and scientific public after it was established that it had become rare. The aim of this research was to determine reproduction traits of the Istrian cattle breed registered in the herdbook of the Croatian Livestock Centre from 1994 to 2004. The total of 401 Istrian cows, with at least one calving registered, were analyzed. The first fertilization was on average at 20.3 months of age, while the first calving was on average at 29.8 months of age. The pregnancy lasted on average 291.8 days. Female calves were carried slightly shorter (1.4 days). The average duration of the service period was 156.2 days and the calving interval was 448.2 days. The average maternal age of cows at the Istrian cattle breed is 14 years, while the average number of calvings per cow is 7