Przyżyciowe metody oceny użytkowości mięsnej bydła
Andrzej Węglarz , Anna Balakowska , Zenon Choroszy
AbstractThis paper reviews different techniques for performance testing of cattle meatiness, which are a useful tool in selective breeding. They enable animals with proper muscling and desirable tissue composition to be chosen for reproduction. In the computer image analysis technique, animals are photographed with a digital camera, the images are transferred to a computer and analysed. The studies discussed in the paper show that the coefficients of correlation between computer measurements and meatiness traits are r = 0.62–0.9. Ultrasound technique enables measuring the cross-section of animal tissues, including thickness of fat layer, some muscles, and longissimus dorsi cross-sectional area. Ultrasound measurements of the longissimus dorsi muscle are used to evaluate the productive value of beef breed bulls in Poland using the method elaborated at the National Research Institute of Animal Production. Computer assisted tomography produces cross-sectional images of the animal body and provides information about fat layer thickness, longissimus dorsi area, and marbling of meat. Other live evaluation methods, such as isotope solution technique and electrical conductivity technique have less practical use.
|Other language title versions||Methods for live evaluation of meat performance in cattle|
|Journal series||Wiadomości Zootechniczne, ISSN 1731-8068, (B 7 pkt)|
|Publication size in sheets||0.6|
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