Izlaganje sa skupa
AN EFFECT OF CROSSING WITH FRENCH BEEF BREEDS ON MEAT PERFORMANCE OF BULLS
L. Bartoň
; Research Institute of Animal production,Prague, Czech Republic
V. Teslík
; Research Institute of Animal production,Prague, Czech Republic
D. Řehák
; Research Institute of Animal production,Prague, Czech Republic
J. Volek
; Research Institute of Animal production,Prague, Czech Republic
Sažetak
Fattening experiment involved 13 purebred Czech Pied (C) bulls, 10 Blond'd'Aquitaine (B) and 11 Charolais (CH) F₁ generation crossbred bulls coming from Czech Pied dams. During the fattening period, animals were fed with corn silage, alfalfa hay and concentrates up to the final weight of 567 (C), 573 (B) a 566 (CH) kg (age 550, 523 and 556 days resp). As for the fattening performance, average daily gain during the fattening period for C, B and CH was 1145, 1284 and 1332 g resp., net weight gain was 538,607, and 543 g resp. Significantly highest dressing percentage (p<0.01) reached B bulls (60.6%) compared with C (57.4%) and CH (58.0%). Differences in the total amount of fat were not significant with relative values 2.6 (c). 2.2 (b) and 2.7 (CH)%. The technological analysis of carcasses revealed significant differences (P<0.01) in the proportion of first-rate meat (C=38.7%, B=41.3% and CH=40.1%). More subtle skeletons of B group were characterised by significantly (P<0.05) lower proportion of bones (16.7%) in comparison with C and CH groups (17.8%). There were insignificant differences among groups in the results of chemical analysis of eye-muscle samples (dry matter content, fat content and crude protein content).
Ključne riječi
Hrčak ID:
164421
URI
Datum izdavanja:
23.4.1996.
Posjeta: 511 *