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Intramuscular connective tissue properties in longissimus thoracis muscle of Simmental Cattle

Published online by Cambridge University Press:  03 October 2017

G. Holló ,
B. Húth ,
E. Egri ,
I. Holló  and
I. Anton
G. Holló*
Affiliation:
Kaposvár University, Faculty of Agricultural and Environmental Sciences, Guba S. Street 40, 7400 Kaposvár, Hungary
B. Húth
Affiliation:
Kaposvár University, Faculty of Agricultural and Environmental Sciences, Guba S. Street 40, 7400 Kaposvár, Hungary
E. Egri
Affiliation:
Kaposvár University, Faculty of Agricultural and Environmental Sciences, Guba S. Street 40, 7400 Kaposvár, Hungary
I. Holló
Affiliation:
Kaposvár University, Faculty of Agricultural and Environmental Sciences, Guba S. Street 40, 7400 Kaposvár, Hungary
I. Anton
Affiliation:
NARIC-Research Institute for Animal Breeding, Nutrition and Meat Science, Gesztenyésstr 1., 2053 Herceghalom, Hungary
*
†E-mail: hollo.gabriella@sic.ke.hu
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Abstract

Intramuscular connective tissue plays an important role in meat tenderness. Our objective was to compare the collagen/hydroxyproline content and X-ray computed tomographic (CT) connective tissue proportion of longissimus thoracis (LT) muscle in Hungarian Simmental bulls and cows. Cows had lower carcass weight (247 kg v. 295 kg), EU conformation score (3.5 v. 5.5) and fatness score (4.2 v. 5.9) than bulls (P<0.01). Bulls had higher LT area, but intramuscular fat content was similar for bulls and cows. On the other hand, bulls had lower CT intramuscular connective tissue proportion in LT compared with cows (0.41±0.21% v. 0.66±0.28%, P<0.01). The same tendency could be observed for the collagen content (0.50±0.21% v. 0.67±0.11%, P<0.01). Correlation between the CT connective tissue proportion of LT and collagen content was r=0.8. There was a weak positive correlation between slaughter age and CT connective tissue as well as collagen content of LT (r=0.3 to 0.4). In conclusion, intramuscular connective tissue proportion in LT increased with slaughter age and older cows had higher collagen and connective tissue proportion than bulls. Mixed CT scans can be used for the analysis of intramuscular connective tissue content.

Keywords

Hungarian Simmentallongissimus thoracisintramuscular connective tissueX-ray computed tomography
Type
Full Paper
Information
Advances in Animal Biosciences , Volume 8 , Supplement s1: Improving the quality and sustainability of beef production , October 2017 , pp. s48 - s50
Copyright
© The Animal Consortium 2017 

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