Urban Jakub, Bień Damian, Matuszewski Arkadiusz, Ciborowska Patrycja, Zalewska Anna, Pietrzak Dorota, Chmiel Marta, Jaroszek Adriana, Graham Lucas Elzie, Michalczuk Monika
Department of Animal Breeding and Nutrition, 02-786 Warsaw, Poland.
Department of Animal Environment Biology, Institute of Animal Sciences, Warsaw University of Life Sciences, 02-786 Warsaw, Poland.
J Vet Res. 2025 Jun 11;69(2):233-239. doi: 10.2478/jvetres-2025-0033. eCollection 2025 Jun.
This study investigated the impact of adding crude fibre concentrate (CFC) to broiler chicken diets on slaughter results and breast muscle quality.
A total of 990 male Ross 308 chicks were divided into control (C), experimental 1 (A1) and experimental 2 (A2) groups. Experimental diets contained CFC at different levels: A1 had 0.4% in the starter diet, 0.8% in the first grower diet, 0.8% in the second grower diet and 0.2% in the finisher diet, and A2 had 0.6%, 1.0%, 1.2% and 0.4% in the same diets. On day 42, 20 birds per group were slaughtered and dissected. Breast muscles were weighed and visually assessed for myopathic defects (white striping, wooden breast and "spaghetti" meat). The tissue was also analysed for residual myopathy incidence and associated physicochemical properties, namely drip loss, shear force, pH, water holding capacity, collagen content, colour parameters and basal chemical composition.
Consumption of the CFC additive statistically significantly reduced (P-value ≤ 0.05) white striping defects and increased final live weight by 2.1% for birds in group A1 and by 3.3% in group A2. Group A1 carcasses also weighed 6.7% more and group A2 carcasses 4.1% more. Additionally, A1 carcasses yielded 1.5% more and A2 carcasses 0.8% more leg muscle, also statistically significantly greater yields than C carcasses (P-value ≤ 0.05). The slaughter yield of birds in group A1 was 3.3% higher (P-value ≤ 0.001) than that of birds in group C. The use of the CFC additive in the diets of both experimental groups had no adverse effect on the other analysed parameters.
Crude fibre concentrate addition to the complete feed mixture is recommended for improving the results of the slaughter analysis and the visual quality of meat.
本研究调查了在肉鸡日粮中添加粗纤维浓缩物（CFC）对屠宰结果和胸肌品质的影响。
总共990只雄性罗斯308雏鸡被分为对照组（C）、实验组1（A1）和实验组2（A2）。实验日粮含有不同水平的CFC：A1组在雏鸡日粮中含0.4%，在第一生长阶段日粮中含0.8%，在第二生长阶段日粮中含0.8%，在育肥期日粮中含0.2%；A2组在相同日粮中分别含0.6%、1.0%、1.2%和0.4%。在第42天，每组宰杀20只鸡并进行解剖。称量胸肌重量，并对其进行肉眼检查以评估肌病缺陷（白条、木胸和“意大利面条”肉）。还分析了组织中的残留肌病发生率及相关理化性质，即滴水损失、剪切力、pH值、持水能力、胶原蛋白含量、颜色参数和基础化学成分。
添加CFC添加剂使A1组鸡的白条缺陷在统计学上显著减少（P值≤0.05），最终活重增加2.1%，A2组增加3.3%。A1组鸡的屠体重也高出6.7%，A2组高出4.1%。此外，A1组鸡的腿肌产量高出1.5%，A2组高出0.8%，同样在统计学上显著高于C组鸡（P值≤0.05）。A1组鸡的屠宰率比C组鸡高3.3%（P值≤0.001）。在两个实验组的日粮中使用CFC添加剂对其他分析参数没有不利影响。
建议在全价饲料混合物中添加粗纤维浓缩物，以改善屠宰分析结果和肉的视觉品质。
