Naslov
Phenotypic characteristics and heritability of m. longissimus dorsi chemical composition in Croatian Simmental bulls

Autori
Štoković, Igor ; Karadjole, Ivo ; Križanović, Dubravka ; Božić, Pero ; Ekert Kabalin, Anamaria

Izvornik
Veterinarski arhiv (0372-5480) 79 (2009), 4; 333-341

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Simmental cattle ; MLD ; chemical composition ; heritability

Sažetak
Simmental breed is a dual purpose breed widely spread in the Republic of Croatia and represents more than two thirds of overall cattle population. In this research we have focused on heritability of chemical components (dry matter, water, protein, fat and ash) in musculus longissimus dorsi (MLD) and its phenotypic characteristics. The trial comprised 698 young bulls, which were sons of 68 sires chosen for artificial insemination (AI), during the period of 13 years. Average chemical composition of MLD was as follows: dry matter 24, 87± ; ; 0, 04%, water 75, 13± ; ; 0, 04%, protein 20, 63± ; ; 0, 05%, fat (ether extract) 3, 14± ; ; 0, 06% and ash 1, 10± ; ; 0, 002%. We have calculated heritability and phenotypic correlations among chemical components and analyzed various influences for all components. All calculations were made in SAS 8.0 (Statistical Analysis System) and Statistica 7.1 software. Phenotypic correlations between dry matter and water, protein, fat and ash were -1, 00, 0, 20, 0, 50 and -0, 20, respectively. Correlations between water and protein, fat and ash were -0, 20, -0, 50 and 0, 20, respectively. Correlation coefficient between protein and fat was -0, 75 ; between protein and ash -0, 05 and between fat and ash -0, 10. All correlations were significant (p<0, 01) except between protein and ash. Heritability estimates for investigated traits were: final weight 0, 73 ; dry matter 0, 60 ; water 0, 60 ; protein 0, 40 ; fat 0, 30 and ash 0, 36. Influence of year, season and month on chemical composition of MLD was significant (p < 0, 01). Phenotypic correlations and heritability estimates could be used for selection in order to improve investigated traits.

Izvorni jezik
Engleski

Znanstvena područja
Veterinarska medicina

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