Parametry genetyczne i predykcje regresyjne dla cech rzeźnych bydła nizinnego czarno-białego
AbstractBased on the data obtained from a detailed dissertation and post-alughter carcass measurements of 570 Black-and-White young bulls /fattened up to 450 kg/, sons of 68 bulls, heritability was determined for 113 traits and genetic correlations between 87 traits referring to slaughter performance. The aim of this study was to find traits which might serve as selection basis. In addition, an evaluation of carcass tissue composition is suggested using the method of stepwise regression, without performing dissection. Calculations concerning regression equations were based on the data provided by 604 young bull carcasses. The results obtained allow to infer that the selection performed for shoulder meat mass ensures better meatness of the whole carcass with a simultaneous decrease in fatness, however, without changes in the sass of bone tissue. This kind of selection seems to be promising since the improvement of meatness will not result in the weakening of the bone system which supports soft body parts and in which the hemogenic system is set.
|Other language title versions||Genetic parameters and regression predictions for slaughter traits in black-and-white cattle|
|Publisher||Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie, MNiSW |
|Publishing place (Publisher address)||Kraków|
|Book series /Journal (in case of Journal special issue)||Zeszyty Naukowe Uniwersytetu Rolniczego im. Hugona Kołłątaja w Krakowie. Rozprawy, ISSN 1899-3486, (0 pkt)|
|Publication size in sheets||4.5|
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