Department of Food Engineering, Faculty of Animal Science and Food Engineering, University of São Paulo - USP, 13635-900 Pirassununga, São Paulo, Brazil.
Department of Technology, University of Agricultural and Veterinary Sciences - UNESP, 14884-900 Jaboticabal, São Paulo, Brazil.
Poult Sci. 2022 Apr;101(4):101709. doi: 10.1016/j.psj.2022.101709. Epub 2022 Jan 10.
The increase in the consumption of poultry meat intensified production, which allowed the emergence of myopathies associated with broiler and turkey meat. The aim to examine possible quality alterations in the 240 Pectoralis major muscle (breast fillets) from carcasses of turkey breeder hens. Regarding DPM, 120 samples of breast fillets from turkey of the Nicholas strain with Pectoralis minor muscle together were selected according to the occurrence of the myopathy in the Pectoralis minor muscle (tender), as follows: DPM score 2 (n = 40), DPM score 3 (n = 40), and a control group unaffected by DPM, score 0 (n = 40). Then, different 120 samples, from the same flock of birds, were selected according to White Striping (WS) anomaly in the Pectoralis major muscle (breast fillets), considering the degree of severity of the striations apparent in the muscle, as follows: moderate (n = 40), severe (n = 40) and a control group (normal) without the presence of WS anomaly (n = 40), with set up as a completely randomized design with 3 treatments for DPM and WS. We evaluated in meat of turkey breeder hens color, water-holding capacity (WHC), cooking loss (CL), shear force (SF), sarcomere length (SL) and total, soluble and insoluble collagen contents. The color parameters lightness (L*), redness (a*), and yellowness (b*) of turkey breeder hens breast fillets were altered by the occurrence of DPM and WS and as except CL, there were a difference for WHC and SF (P < 0.05). Significant differences were observed for sarcomere length (P < 0.05) between fillets without myopathies and with DPM Score 2 and 3 too. Higher values of total collagen (%) were observed for the most severe category of involvement for both myopathies. The DPM and WS affect the color and in a partial reduction texture of the breast fillets meat of turkey breeder hens and this may have a negative economic impact on the meat industry, because these are the main points evaluated by the consumer, in the most value commercial cut.
随着禽肉消费的增加，鸡肉产量也在增加，这使得与肉鸡和火鸡肉相关的肌肉疾病开始出现。本研究旨在研究火鸡种鸡胸脯肉（鸡胸肉片）中可能存在的质量变化。关于 DPM，根据 Pectoralis minor 肌肉（嫩肉）中肌病的发生情况，选择了尼古拉斯品系火鸡的 120 个胸肉样本，这些样本与 Pectoralis minor 肌肉一起，具有 Pectoralis minor 肌肉（嫩肉），如下所示：DPM 评分 2（n = 40）、DPM 评分 3（n = 40）和不受 DPM 影响的对照组，评分 0（n = 40）。然后，根据胸大肌（鸡胸肉片）中白色条纹（WS）异常，从同一批鸟中选择了另外 120 个样本，考虑到肌肉中条纹的明显程度，如下所示：中度（n = 40）、重度（n = 40）和对照组（正常）没有 WS 异常（n = 40），完全随机设计为 3 个 DPM 和 WS 处理组。我们评估了火鸡种母鸡肉的颜色、水分保持能力（WHC）、蒸煮损失（CL）、剪切力（SF）、肌节长度（SL）和总胶原、可溶性胶原和不溶性胶原含量。火鸡种母鸡鸡胸肉片的颜色参数亮度（L*）、红色（a*）和黄色（b*）因 DPM 和 WS 的发生而发生变化，除了 CL 外，WHC 和 SF 也有差异（P < 0.05）。在没有肌病和 DPM 评分 2 和 3 的鸡胸肉片之间观察到肌节长度的显著差异（P < 0.05）。在这两种肌病中，总胶原（%）的含量在最严重的类别中较高。DPM 和 WS 会影响火鸡种母鸡胸肉片的颜色和部分质地，这可能会对肉类加工业产生负面影响，因为这些是消费者在最有价值的商业切割中评估的主要因素。
