Journal
MEAT SCIENCE
Volume 77, Issue 2, Pages 220-227Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.meatsci.2007.03.008
Keywords
Chinese native chicken; broiler chicken; histological properties; shear force value; M. pectoralis superficialis
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The objective of this experiment was to examine development of breast muscle and myofiber of M. pectoralis superficialis in three chicken breeds. Commercial broiler chickens (Arbor Acres broilers, AA), crossbred chickens (Jingxing 100 crossbred chickens, JXC) and Chinese native chickens (Beijing fatty chickens, BJF) were grown up to 98 d to estimate myofiber density, and size (area, and diameter of myofibers) in P. superficialis. At 42, 56, 70, 84, and 98 d of age, Pectoralis muscle was used to evaluate breast muscle weight, breast yield, and tenderness (shear force value). Results indicate that commercial broilers have higher breast weight, and higher shear force value than crossbred chickens and Chinese native chickens, that may be due to an increased myofiber diameter and area in Pectoralis muscle. It is suggested that histological properties of myofibers play an important role in increasing the shear force value of meat. (c) 2007 Elsevier Ltd. All rights reserved.
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