CHICKEN BREAST MUSCLE-FIBER TYPE AND DIAMETER AS INFLUENCED BY AGE AND INTRAMUSCULAR LOCATION
CHICKEN BREAST MUSCLE-FIBER TYPE AND DIAMETER AS INFLUENCED BY AGE AND INTRAMUSCULAR LOCATION
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DOI：
10.3382/ps.0670908
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发表时间：
1988-06-01
期刊：
影响因子：
4.4
通讯作者：
FLETCHER, DL
中科院分区：
文献类型：
--
作者：
SMITH, DP;FLETCHER, DL
进行了六项试验，以确定肌肉（胸大肌和胸小肌）和肌肉内的位置对四个不同年龄组鸡的纤维类型和直径的影响。从商业加工厂获得的肉鸡、雅典加拿大随机饲养鸡、烘焙鸡和肉种鸡均通过颈椎脱位杀死。从胸大肌（p.major）的前部、中部和后部区域以及胸小肌（p.minor）的前部和后部区域取出肌肉样本。在-20℃下制备10mm厚的冷冻横肌切片，对腺苷磷酸酶活性进行染色，并进行显微照相以进行纤维分型和纤维直径测量。不同年龄组、性别或肌肉位置的纤维类型没有差异。 p。小肌比 p 具有更多的中间纤维。主要肌肉。 p 后部的纤维直径明显更大。在两项肉鸡试验（雌性烤鸡和种鸡）中，主要肌肉比前部或中部重要。 p 的纤维直径没有显着差异。小肌肉。
Six trials were conducted to determine the influence of muscle (perctoralis major and pectoralis minor) and location within the muscle on fiber type and diameter in four different age groups of chicken. Broilers obtained from a commercial processing plant, Athens Canadian Randombred chickens, roasters, and broilers breeder hens were killed via cervical dislocation. Muscle samples were removed from the anterior, middle, and posterior areas of the pectoralis major (p. major), and from the anterior and posterior areas of the pectoralis minor (p. minor). Frozen transverse muscle sections, 10 mm thick, were prepared at -20 C, stained for adenosine phosphatase activity, and photomicrographed for fiber typing and fiber diameter measurement. No differences were found in fiber types by age group, sex, or location with the muscle. The p. minor muscle had more intermediate fibers than the p. major muscle. Fiber diameters were significantly larger in the posterior portion of the p. major muscle than in the anterior or middle portions in two of the broiler trials, the female roastrs, and the breeder hens. No significant differences in fiber diameter were noted for the p. minor muscle.