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首页> 外文期刊>International Journal of Poultry Sciences >Effect of Dietary Inclusion of a Plant Extract Blend on Broiler Growth Performance, Nutrient Digestibility, Caecal Microflora and Intestinal Histomorphology
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Effect of Dietary Inclusion of a Plant Extract Blend on Broiler Growth Performance, Nutrient Digestibility, Caecal Microflora and Intestinal Histomorphology

机译：日粮中添加植物提取物混合物对肉鸡生长性能，养分消化率，盲肠菌群和肠道组织形态的影响

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Objective: This trial was conducted to determine if the growth performance, apparent nutrient digestibility, caecal microflora and intestinal histomorphology of broiler chickens could be enhanced via supplementation of their diets with a blend of plant extracts containing oregano, fenugreek, chamomile and fennel. Methodology: The plant extract blend was included as a natural growth promoter in six dietary treatments at levels of 0, 100, 200, 500, 1000 and 2000 ppm. A seventh treatment, supplemented with 200 ppm oxytetracycline (OTC) antibiotic as growth promoter, was included in the study design to compare its effect to those fed on the plant extract blend (0 and 200 ppm). The trial utilized 245, day-old chicks distributed in 7 dietary treatments (7 birds/pen; 5 replicate pens/treatment). Results: No significant differences were observed in the measured growth performance parameters (body weight, daily gain, daily feed intake and feed conversion ratio) due to inclusion of the plant extract blend (p>0.05). Supplementation of the broiler diet with 200 ppm of OTC resulted in significant improvement in the measured growth performance parameters compared to those fed on 0 (control) or 200 ppm of the plant extract blend. The mortality percentage in the control group was 11.4% and was decreased by an average of 50-75% in broilers fed on the plant extract blend. No mortality was observed in broilers fed on the 200 ppm OTC. The apparent total tract digestibility of dry matter , crude protein and ether extract was increased due to inclusion of the plant extract blend or OTC. The caecal microflora count was positively influenced (p Conclusion: The utilized plant extract blend showed the capacity to significantly improve total tract apparent nutrient digestibility and caecal microflora count, but without an observed improvement in the growth performance and intestinal histomorphology.
机译：目的：进行该试验的目的是确定通过添加含牛至，胡芦巴，洋甘菊和茴香的植物提取物的混合物，可提高肉鸡的生长性能，表观营养物质消化率，盲肠菌群和肠道组织形态。方法：将植物提取物混合物作为自然生长促进剂，以0、100、200、500、1000和2000 ppm的含量包含在六种饮食处理中。研究设计中包括第七种处理方法，该处理方法辅以200 ppm的土霉素（OTC）抗生素作为生长促进剂，以将其效果与饲喂植物提取物混合物（0和200 ppm）的效果进行比较。该试验使用了245只，日龄雏鸡，分别进行7种饮食处理（7只鸡/笔; 5只重复笔/处理）。结果：由于加入了植物提取物混合物，因此在测得的生长性能参数（体重，日增重，日采食量和饲料转化率）上没有观察到显着差异（p> 0.05）。与以0（对照）或200 ppm植物提取物混合物喂养的肉鸡相比，用200 ppm的OTC补充肉鸡日粮可显着改善测得的生长性能参数。对照组的死亡率为11.4％，以植物提取物混合物喂养的肉鸡平均降低了50-75％。用200 ppm OTC饲喂的肉鸡没有观察到死亡率。由于加入了植物提取物混合物或OTC，增加了干物质，粗蛋白和乙醚提取物的表观总道消化率。盲肠菌群计数受到积极影响（p结论：所利用的植物提取物混合物显示出显着提高总表观养分消化率和盲肠菌群计数的能力，但未观察到生长性能和肠道组织形态的改善。

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