Novoa Martín, Francisco Iván, Lage Almudena, Benedito José Luis, García Lucio, Vázquez Luis, Cobas Noemi
COREN, Sociedad Cooperativa Galega, 32003 Orense, Spain.
Departamento de Patología Animal, Facultad de Veterinaria, Universidad de Santiago de Compostela (USC), 27002 Lugo, Spain.
Animals (Basel). 2022 Jun 23;12(13):1617. doi: 10.3390/ani12131617.
Breast anomalies in broilers, especially wooden breast (WB) and spaghetti meat (SM), cause high economic losses to the poultry meat sector. In order to identify the parameters that have a causal effect and to reduce the incidence of these myopathies, 141,792 broilers were analyzed in a total of 1477 batches using a visual grading system. The relationship among productive parameters such as the feed conversion ratio, live weight, growth rate, and mortality, was evaluated. Effects due to skin color (white vs. yellow), broiler sex (male, female, and mixed groups), feed presentation (grain vs. mash), and veterinary treatments (treated vs. untreated) were also included in the statistical study. Live weight was observed to have a significant effect (p < 0.001) on WB incidence, which increased by 1.11 for each 100 g of weight. Weight did not significantly affect the incidence of SM. Males had a higher incidence of WB and a lower incidence of SM than females. The incidence of both myopathies varied between samples that turned out to be significantly affected by some of the variables considered in the model, such as grain feeding and the feed conversion ratio. Controlling these factors in the broiler production could help to reduce the incidence of WB and SM.
肉鸡的胸部异常，尤其是木胸（WB）和 spaghetti 肉（SM），给禽肉行业造成了巨大的经济损失。为了确定具有因果关系的参数并降低这些肌病的发病率，使用视觉分级系统对总共 1477 批的 141,792 只肉鸡进行了分析。评估了诸如饲料转化率、活重、生长速率和死亡率等生产参数之间的关系。统计研究还包括了肤色（白色与黄色）、肉鸡性别（雄性、雌性和混合组）、饲料形式（颗粒料与粉料）以及兽医治疗（治疗与未治疗）的影响。观察到活重对 WB 的发病率有显著影响（p < 0.001），每增加 100 克体重，发病率增加 1.11。体重对 SM 的发病率没有显著影响。雄性的 WB 发病率高于雌性，而 SM 的发病率低于雌性。在模型中考虑的一些变量，如颗粒料喂养和饲料转化率，对样本中这两种肌病的发病率有显著影响。在肉鸡生产中控制这些因素有助于降低 WB 和 SM 的发病率。
