Izvorni znanstveni članak
ASSOCIATION OF β-LAKTOGLOBULIN WITH MILK YIELD OF CROATIAN SIMMENTAL II. GENE EFFECT
Jasmina Lukač-Havranek
; Agronomski fakultet, Zavod za mljekarstvo, Zagreb, Republika Hrvatska
Ino Čurik
; Agronomski fakultet, Zavod za mljekarstvo, Zagreb, Republika Hrvatska
Neven Antunac
; Agronomski fakultet, Zavod za mljekarstvo, Zagreb, Republika Hrvatska
Dubravka Samaržija
; Agronomski fakultet, Zavod za mljekarstvo, Zagreb, Republika Hrvatska
Miroslav Kapš
; Agronomski fakultet, Zavod za specijalno stočarstvo, Zagreb, Republika Hrvatska
Sažetak
Effects of β-lactoglobulin locus on first lactation milk yield, kilograms of fat and fat percentage in milk samples from 195 Croatian Simmental cows were examined by gene substitution models after allele A was set to zero. Additive genetic variance due to β-lactoglobulin locus was calculated by formula ơ²ᴀ =2pq α². The substitution of the B allele for the A allele was associated with decreased mitt yield (P=0,006) and fat yield (P=0,043) but increased fat content (P=0,003). The contribution of B- lactoglobulin locus accounted for 4.1% of phenotypic variance in milk yield, 2.2% in fat yield and 4.9% in fat content. This study found that milk with allele A had higher milk and fat yield but allele B was associated with higher fat content. However, more research is necessary to confirm these findings before B- lactoglobulin alelles are included in selection.
Ključne riječi
Hrčak ID:
162650
URI
Datum izdavanja:
20.1.1994.
Posjeta: 952 *