Crossbreeding effects on milk production traits

ZAVADILOVÁ, L., WOLF, J. & NĚMCOVÁ, E.. Efekty křížení u mléčné užitkovosti. Náš chov. 2005, roč. 65, č. 6, s. 22-24.
ZAVADILOVÁ, Ludmila, WOLF, Jochen and NĚMCOVÁ, Eva. Crossbreeding effects on milk production traits. Náš chov, 2005, vol. 65(6), p. 22-24. ISSN 0027-8068.
Year2005
CathegoryPublication in specialized journals
Internal link5084.pdf
Abstract

Crossbreeding effects on milk production traits of Czech dual-purpose and dairy cattle breeds were estimated. Data from approximately 370000 cows with known gene proportions from Czech Pied, Ayrshire or Holstein cattle were analyzed. For milk yield, theadditive genetic effect (defined as deviation from Czech Pied cattle) was 850 to 900 kg for Holstein and 240 to 480 kg for Ayrshire. The maternal effects were negative and lower. Low significant positive heterotic effects were observed being about 100 kgfor Czech Pied x Holstein.