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Developmental changes of carcass composition, meat quality and organs in the Jinhua pig and Landrace

Published online by Cambridge University Press:  01 March 2009

Z.-G. Miao ,
L.-J. Wang ,
Z.-R. Xu ,
J.-F. Huang  and
Y.-R. Wang
Z.-G. Miao
Affiliation:
Key Laboratory for Molecular Animal Nutrition of Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University (Huajiachi Campus) Qiutao North Road 164, Hangzhou 310029, PR China College of Animal Science, Henan Institute of Science and Technology, XinXiang 453003, China
L.-J. Wang
Affiliation:
Key Laboratory for Molecular Animal Nutrition of Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University (Huajiachi Campus) Qiutao North Road 164, Hangzhou 310029, PR China
Z.-R. Xu*
Affiliation:
Key Laboratory for Molecular Animal Nutrition of Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University (Huajiachi Campus) Qiutao North Road 164, Hangzhou 310029, PR China
J.-F. Huang
Affiliation:
Department of Animal Medicine, Agriculture College of Yanbian University, LongJing 133400, China
Y.-R. Wang
Affiliation:
College of Animal Science, Henan Institute of Science and Technology, XinXiang 453003, China
*
E-mail: [email protected]
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Abstract

The present study was aimed to compare the developmental changes of carcass composition, meat quality characteristics and organ weight in pigs of different breeds. Six pigs (sex balance) of each breed were slaughtered at 35, 80 and 125 days of age, respectively. The carcass was chilled and the left carcass side was dissected into bone, lean meat, fat and skin; additionally, organ weight and meat quality parameters were observed. Carcasses of the Jinhua pig were lighter (P < 0.001), contained less lean meat percentage (P < 0.01) and more carcass fat percentage (P < 0.05) than did carcasses of the Landrace. L*-values were lower in Jinhua pigs than in Landrace at 125 days of age (P < 0.05), but the Jinhua pig had higher a*-values compared with Landrace at the age of 80 days (P < 0.01) and 125 days (P < 0.01), respectively. In addition, Jinhua pigs showed lower colour scores (P < 0.05), higher intramuscular fat (IMF) percentage (P < 0.05), less marbling scores (P < 0.05) and lower drip loss (P < 0.05) than Landrace. For organ weight, Jinhua pigs had higher relative heart weight at the age of 80 days (P < 0.05) and 125 days (P < 0.001), and higher relative liver weight at 125 days of age (P < 0.01) than that of Landrace. In addition, the relative kidney weight was heavier (P < 0.001) in the Jinhua pig than in the Landrace during the whole experiment. These results indicated that developmental changes of carcass composition, meat quality parameters and organ weight displayed breed differences. Jinhua pigs were fatter than Landrace but the former had better quality characteristics in the meat.

Keywords

Jinhua pigsLandracecarcass compositionmeat qualityorgan weight
Type
Full Paper
Information
animal , Volume 3 , Issue 3 , March 2009 , pp. 468 - 473
Copyright
Copyright © The Animal Consortium 2008

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