Management of breeding bulls of Busha cattle in Croatia - a bull:cow ratio trends (CROSBI ID 723032)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Menčik, Sven ; Piplica, Aneta ; Ostović, Mario ; Ekert Kabalin, Anamaria ; Sušić, Velimir ; Vlahek, Ivan ; Čačić, Mato ; Ivanković, Ante
engleski
Management of breeding bulls of Busha cattle in Croatia - a bull:cow ratio trends
ABSTRACT: The Busha cattle breed contributes to a genetic diversity for centuries in Croatia, with the number of breeding cows significantly increasing in the last decades. Successful reproduction of native breeds in outdoor breeding conditions is a multifactorial phenomenon influenced by genetic and non-genetic factors. Improving fertility and conception in native outdoor breeding units with optimal bull:cow ratio is important to reduce costs of production and avoid negative effects of reproductive management in the herd. Herds of the Busha cattle across Croatia were included in the study to calculate the variability and trends in the bull:cow ratio among the herds. The data on 204 active breeding bulls born in the 2007-2020 period were obtained from the Veterinary Information System of the Ministry of Agriculture, Directorate for Veterinary Administration. Observed vs. expected frequencies were tested with Chi-sqaured test using the three model approach according to the expected number of bulls per cows in the herd ; model 1 as 1:10, model 2 as 1:15, and model 3 as 1:20. Analyzing the proportions of the expected bull:cow ratios significant differences were recorded for model 1 (herds with >31 cows, P<0.01), model 2 (herds with >61 cows, P<0.05) and model 3 (herds with >81 cows, P<0.01). Accordingly, a higher number of breeding males is expected in the herds. In this way, it is possible to improve reproductive performance, as well as genetic potential during the productive life, and share positive genes especially for herd fertility management for succesful breeding and genetic diversity of the Busha breed.
Busha, bulls, management, reproduction
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Podaci o prilogu
39-39.
2022.
objavljeno
Podaci o matičnoj publikaciji
Book of Abstracts 30th International Symposium Animal Science Days 2022
Brajković, Vladimir ; Čubrik Ćurik, Vlatka ; Čurik, Ino ; Držaić, Ivana ; Shihabi, Mario
Zagreb: Agronomski fakultet Sveučilišta u Zagrebu
978-9538276-36-1
Podaci o skupu
30th International Symposium Animal Science Days (ASD 2022)
predavanje
21.09.2022-23.09.2022
Zadar, Hrvatska