Type

Journal Article

Authors

A. P. Moloney
E. G. O'Riordan
M. McGee
B. Picard
Joseph P Kerry
Maurice G O'Sullivan
L. Moran

Subjects

Agriculture & Food Science

Topics
diet intramuscular fat grazing tenderness castration finishing muscle fibre profile steers fat content animals meat quality grazing period

Effect of a grazing period prior to finishing on a high concentrate diet on meat quality from bulls and steers (2016)

Abstract Bulls and steers (n = 60) were assigned to a pre-finishing grazing period and subsequently finished on concentrates or offered concentrates without grazing until slaughter (19 months). Colour and pH of longissimus thoracis were measured (48 h post-slaughter), and samples collected for proximate composition, collagen, sarcomere length, muscle fibre and enzymatic profile analysis. Steaks for texture, cook loss and sensory were aged (14 days). Castration increased intramuscular fat content, cook loss and myosin isoforms IIa and I proportions, and decreased IIx proportion (P < 0.05). Steer meat was positively correlated to overall tenderness, texture and acceptability (P < 0.05). The presence of a pre-finishing grazing period decreased intramuscular fat and increased the proportion of IIa compared with animals on concentrates, while no differences were found in sensory. Muscle colour, collagen, sarcomere length and instrumental texture were not modified by diet or castration. In conclusion, beef sensory characteristics were unaffected by diet, whereas castration resulted in a small improvement; however all the treatments produced an acceptable product.
Collections Ireland -> University College Cork -> College of Science, Engineering and Food Science
Ireland -> University College Cork -> Food and Nutritional Sciences - Journal Articles
Ireland -> University College Cork -> Food and Nutritional Sciences

Full list of authors on original publication

A. P. Moloney, E. G. O'Riordan, M. McGee, B. Picard, Joseph P Kerry, Maurice G O'Sullivan, L. Moran

Experts in our system

1
A P Moloney
Teagasc
Total Publications: 89
 
2
Edward G. O'Riordan
Teagasc
Total Publications: 26
 
3
Mark McGee
Teagasc
Total Publications: 73
 
4
J P Kerry
University College Cork
Total Publications: 130
 
5
Maurice G O'Sullivan
University College Cork
Total Publications: 34