Correlation of ultrasonic measured ribeye area and fat thickness to the certain traits measured on slaughtered bulls (Short Communication)

Abstract

The aim of this study was to test accuracy of measurements done by Falco 100 (Pie Medical) ultrasonic equipment. 10 Angus, 10 Hungarian Simmental, 10 Limousin and 10 Charolais fattening bulls were measured at the feedlot just before slaughtering. Fat thickness at the rump (P8) and ribeye area (REA) were realized from each animal. After slaughtering, the data of slaughter and carcass weights were collected and carcasses were judged on the base of EUROP system. The database was examined by SPSS 9.0 for Windows. Average liveweight of Angus was 645 ± 41.5 kg, of Hungarian Simmental was 676 ± 41.8 kg, of Limousin was 655 ± 50.8 kg and of Charolais was 694 ± 42.3 kg at the measurement. REA measured with ultrasound was 102.9 ± 8.9 cm 2 , 102.7 ± 10.4 cm 2 , 111.2 ± 9.6 cm 2 and 106.4 ± 9.5 cm 2 , respectively. P8 was 1.05 ± 0.28 cm, 0.62 ± 0.13 cm, 0.62 ± 0.09 and 0.61 ± 0.18 cm, respectively. Correlation between ultrasonic and carcass REA in case of mentioned breeds was 0.74, 0.74, 0.94 and 0.80. Correlation between P8 and EUROP fat score was 0.51, 0.73, 0.56 and 0.28, respectively. Overall correlation between ultrasonic and carcass REA was 0.83 (P≤0.01), and between P8 and EUROP fat score was 0.69 (P≤0.01).Keywords: bulls, ultrasound, accuracy, ribeye area, fat thickness ZusammenfassungBeziehungen zwischen Ultraschallmessdaten der Rückenmuskelfläche und Rücken-fettdicke zu Schlachtergebnissen von Mastbullen (Kurzmitteilung) Das ZieI der Untersuchung war die Prüfung der Genauigkeit des Ultraschallgerätes Falco 100 (Pie Medical). Unmittelbar vor der Schlachtung von je 10 Mastbullen der Rassen Angus, Ungarisches Fleckvieh, Limousin und Charolais erfolgte die Ultraschallmessung der Rückenfettdicke (P8) sowie der Rückenmuskelfläche (REA). Nach der Schlachtung wurden die Schlachtausbeute, das Hälftengewicht, die EUROP Fleischigkeits-und Fettgewebeklasse sowie die am Schlachtkörper dem Ultraschall vergleichbaren Messdaten festgestellt und mit dem Programmpaket SPSS 9.0 für Windows ausgewertet.Zum Zeitpunkt der Messung und Schlachtung betrugen die Lebendgewichte der Bullen: Angus = 645 ± 41,5 kg, Ungarisches Fleckvieh = 676 ± 41,8 kg, Limousin = 655 ± 50,8 kg und Charolais = 694 ± 42,3 kg. ln der genannten Reihenfolge der Rassen wurden folgende Ultraschallmesswerte für die Rückenmuskelfläche 102,9 ± 8,9 cm 2 , 102,7 ± 10,4 cm 2 , 111,2 ± 9,6 cm 2 und 106,4 ± 9,5 cm 2 ermittelt bzw. für die Rückenfettdicke von 1,05 ± 0,28 cm,

Comparison of fattening performance and slaughter value of local Hungarian cattle breeds to international breeds

“…Previously, Pfuhl et al (2007) reported differences in cross sectional area of longissimus muscle between Charolais and Holstein bulls.The longissimus muscle area at the 12th rib was significantly lower for Angus and Holstein compared to other genotypes. Török et al (2009) measured via ultrasonic measurements higher ribeye area for Charolais, Angus and Hungarian Simmental bulls than our values. Our measurements were made after dissection at 24 h post mortem, whilst Török et al (2009) measured carcass ribeye area immediately after slaughter.…”

“…Török et al (2009) measured via ultrasonic measurements higher ribeye area for Charolais, Angus and Hungarian Simmental bulls than our values. Our measurements were made after dissection at 24 h post mortem, whilst Török et al (2009) measured carcass ribeye area immediately after slaughter.…”

“…The Angus bulls gained 113 g more than Charolais, besides this the daily gain of Charolais × Hungarian Grey did not differ from Angus bulls (1 148 g/day). Previously Chambaz et al (2003) and Török et al (2009) confirmed that Angus had similar growth rate to Charolais and Simmental breeds. Bartoň et al (2007a) reported similar daily gain for Czech Fleckvieh (1 356 g/day) and Charolais (1 441 g/day).…”