Department of Agricultural Education, School of Industrial Education and Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok, 10520, Thailand.
Department of Animal Production, Faculty of Agriculture, University of Ilorin, PMB 1515, Ilorin, Kwara State, Nigeria.
Trop Anim Health Prod. 2024 Oct 2;56(8):313. doi: 10.1007/s11250-024-04121-9.
This study investigated the effects of age and sex on carcass and meat characteristics of one of Thailand's major indigenous chicken breeds, the white-tailed yellow native chicken (NC). A total of 120 one-day-old NC (60 males and 60 females) were raised, and harvested at either 16, 20 or 24 weeks. The results showed that body, carcass, breast and fillet weights did not differ (P > 0.05) between 16- and 20-week-old NC, but were lower (P < 0.05) than those of 24-week-old NC. Male NC had higher (P < 0.05) body, carcass, wing, back and thigh weights than female NC. Neither sex nor age affected muscle pH, sarcomere length, redness and yellowness, guanosine monophosphate, and hypoxanthine. The interaction between age and sex was significant (P < 0.05) for %dressing, %leg, L*, C14:1, C18:1n9 and C20:4n6. Shear force was lower in 16-week-old NC (P < 0.05). The 24-week-old NC had lower (P < 0.05) C13:0, C16:0, C18:0, C18:2n6t, C20:4n6, C22:6n-3, intramuscular fat and inosine 5'-monophosphate levels and higher (P < 0.05) C18:2n6c, C18:3n-3 and C20:3n-6 levels than the 16- and 20-week-old NC. Male NC had higher (P < 0.05) C13:0-, C14:0-, C18:2n6t-, C20:3n-6- and lower inosine levels than female NC. In conclusion, these data highlight age- and sex-specific differences in carcass and meat quality of NC and provide relevant information to support consumer-oriented decisions on the production, processing and nutritional value of NC.
本研究旨在探讨年龄和性别对泰国主要本土鸡种之一——长尾黄本地鸡（NC）的胴体和肉质特性的影响。共饲养了 120 只 1 日龄的 NC（雄性 60 只，雌性 60 只），分别在 16、20 或 24 周时收获。结果表明，16-20 周龄 NC 的体质量、屠体质量、胸肌质量和腿肌质量无差异（P＞0.05），但显著低于 24 周龄 NC（P＜0.05）。雄性 NC 的体质量、屠体质量、翅膀质量、背部质量和大腿质量均显著高于雌性 NC（P＜0.05）。年龄和性别对肌肉 pH 值、肌节长度、红度和黄度、单磷酸鸟苷和次黄嘌呤均无影响。年龄和性别之间存在显著的交互作用（P＜0.05），表现为出肉率、腿肉率、L*值、C14:1、C18:1n9 和 C20:4n6。16 周龄 NC 的剪切力显著低于其他两组（P＜0.05）。24 周龄 NC 的 C13:0、C16:0、C18:0、C18:2n6t、C20:4n6、C22:6n-3、肌内脂肪和肌苷酸 5'-单磷酸含量显著低于 16 周龄和 20 周龄 NC（P＜0.05），C18:2n6c、C18:3n-3 和 C20:3n-6 含量显著高于 16 周龄和 20 周龄 NC（P＜0.05）。雄性 NC 的 C13:0、C14:0、C18:2n6t、C20:3n-6 和肌苷含量显著低于雌性 NC（P＜0.05）。综上所述，本研究结果突出了 NC 胴体和肉质的年龄和性别特异性差异，并为支持面向消费者的 NC 生产、加工和营养价值决策提供了相关信息。
