Ma Jiayu, Wang Jian, Mahfuz Shad, Long Shenfei, Wu Di, Gao Jie, Piao Xiangshu
State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
Department of Animal Nutrition, Faculty of Veterinary, Animal and Biomedical Sciences, Sylhet Agricultural University, Sylhet 3100, Bangladesh.
Animals (Basel). 2021 Oct 20;11(11):3020. doi: 10.3390/ani11113020.
: Organic acid as a green feed additive is increasingly favoured by enterprises and scholars, but little emphasis has been placed on the effect of organic acids on broiler meat quality. : A total of 192 male chicks (one-day-old, weighted 48.40 ± 0.64 g) were selected to investigate the effect of mixed organic acids (MOA) on growth performance, meat quality as well as fatty acids profile. Chicks were randomly allocated to three treatments with eight replicates and eight chicks per replicate, including a corn-soybean basal diet with 0 (CON), 3000 mg/kg (low MOA; LMOA), and 6000 mg/kg (high MOA; HMOA) MOA. The experiment was divided into starter (d 1-d 21) and grower (d 22-d 42) phases. Results: Broilers supplemented with LMOA and HMOA enhanced ( < 0.05) the final body weight and average daily gain in the grower and overall phases. An improved ( < 0.05) feed conversion ratio in the grower and overall phases was observed in broilers supplemented with LMOA. The breast and thigh muscles pH24h were higher ( < 0.05) in broilers fed with HMOA and the redness in thigh meat was also improved ( < 0.05). Additionally, supplementing LMOA increased ( < 0.05) the saturated fatty acids, unsaturated fatty acids and the ratio of polyunsaturated fatty acids to saturated fatty acids in breast meat. A positive effect occurred ( < 0.05) on jejunal villus height and ileal crypt depth in 21 d broilers supplemented with HMOA. : Our findings indicated that dietary supplementation of MOA could improve the growth performance, meat quality, and fatty acids profile, as well as intestinal morphology. Furthermore, diets supplemented with mixed organic acids at 3000 mg/kg may be more desirable, considering the overall experimental results in broilers.
有机酸作为一种绿色饲料添加剂越来越受到企业和学者的青睐，但有机酸对肉鸡品质的影响却很少受到关注。选取192只雄性雏鸡（1日龄，体重48.40±0.64克），研究混合有机酸（MOA）对生长性能、肉质以及脂肪酸组成的影响。雏鸡被随机分为三个处理组，每组8个重复，每个重复8只鸡，分别为基础玉米-豆粕日粮组（添加0毫克/千克MOA，CON组）、低剂量MOA组（添加3000毫克/千克MOA，LMOA组）和高剂量MOA组（添加6000毫克/千克MOA，HMOA组）。试验分为育雏期（第1天至第21天）和生长期（第22天至第42天）两个阶段。结果：添加LMOA和HMOA组的肉鸡在生长期和全期的末体重和平均日增重均显著提高（P<0.05）。添加LMOA组的肉鸡在生长期和全期的饲料转化率显著提高（P<0.05）。HMOA组肉鸡胸肌和腿肌的pH24h较高（P<0.05），腿肉的红度也有所改善（P<0.05）。此外，添加LMOA可提高胸肉中饱和脂肪酸、不饱和脂肪酸以及多不饱和脂肪酸与饱和脂肪酸的比例（P<0.05）。添加HMOA对21日龄肉鸡的空肠绒毛高度和回肠隐窝深度有显著的正向影响（P<0.05）。我们的研究结果表明，日粮中添加MOA可以改善肉鸡的生长性能、肉质、脂肪酸组成以及肠道形态。此外，综合肉鸡的整体试验结果，日粮中添加3000毫克/千克的混合有机酸可能更为理想。
