Efekty hybridizace jatečné hodnoty brojlerových králíků.
Authors: ZAVADILOVÁ, L. – MACH, K. – MAJZLÍK, I. – VOSTRÝ, L.
Page: 45 - 48
English / Anglicky:
The carcass traits of broiler rabbits HY PLUS – paternal line 59, maternal line 19 and crossbreds F1 (59 x 19), F2, F11 (59 x F1), were analysed. The weight least squares means were used for estimating crossbreeding effects. The model of Dickerson (1969, 1973) was used to estimate of additive effect, heterosis and recombination loss. The analysed traits were fore part of body, shoulder, hind legs, carcass I, II, dressing percentage I, II. By the end of the fattening period, the paternal line showed the highest weight, the lowest weights were found for crossbreds F11 or F2. The dressing percentage I and II were the lowest for the maternal line. Positive estimates of additive effect on behalf of line 59 were found for the all traits, mostly non-significant with exception of carcass II (103.7g). Heterosis was negative, significant for body weight (–174.7 g), shoulder (–20.5 g), hind legs (–31.0 g), carcass weight I (93.0g) and carcass weight II (–107.2 g). Recombination loss occurred significant and high, mostly negative except for dressing percentage I (1.64%) and dressing percentage II (1.40%).
rabbit; carcass traits; crossbreeding; maternal line; paternal line
Czech / Česky:
The carcass traits of broiler rabbits HY PLUS – paternal line 59, maternal line 19 and crossbreds F1 (59 x 19), F2, F11 (59 x F1), were analysed. The weight least squares means were used for estimating crossbreeding effects. The model of Dickerson (1969, 1973) was used to estimate of additive effect, heterosis and recombination loss. The analysed traits were fore part of body, shoulder, hind legs, carcass I, II, dressing percentage I, II. By the end of the fattening period, the paternal line showed the highest weight, the lowest weights were found for crossbreds F11 or F2. The dressing