In vivo estimates of slaughter value of bulls using ultrasound and body dimensions
2001
Polak, P. | Blanco Roa, E.N. | Huba, J. | Krupa, E. (Vyskumny Ustav Zivocisnej Vyroby, Nitra (Slovak Republic)) | Sloniewski, K. | Sakowski, T.
The aim of this work was to verify the possibility of using ultrasound combined with body dimensions in in vivo estimates of slaughter value in a population of beef bulls of the Slovakian Pied breed. The construction of suitable models of slaughter value estimates was another aim of our work. 101 bulls were killed at an average age of 457 days and average weight of 486 kg. In each bull eighteen body dimensions were determined and tissue thickness was measured at five points by ultrasound. The highest coefficients of linear correlation were observed between weight before slaughter and all slaughter value indices (r=0.80-0.94), tissue thickness on the last lumbar vertebra (r=0.47-0.49), chest circumference (r=0.69-0.79), central width of the pelvis (0.66-0.71), circumference of thigh (0.61-0.69) and chest width (0.52-0.56). These indices were used to construct linear models for assessing selected slaughter indices. The sonographic method combined with body dimensions showed to be suitable to estimate selected indices of slaughter value in live bulls of the Slovakian Pied breed.
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