Department of Animal Production, Faculty of Agriculture, University of Ilorin, PMB 1515, Ilorin, Nigeria.
Trop Anim Health Prod. 2021 Jan 14;53(1):125. doi: 10.1007/s11250-020-02534-w.
The effect of dietary supplementation of Crassocephalum crepidioides leaf powder (CCLP) in comparison with oxytetracycline and butylated hydroxyanisole (BHA) on growth, caecal microbiota, immune status, blood chemistry, carcass traits, meat quality, and oxidative stability in broiler chickens was evaluated. Two hundred and eighty 1-day-old Arbor acre chicks were randomly assigned to a basal diet containing either no additive (control, CON), 400 ppm oxytetracycline + 150 ppm BHA (ANTIBIOX), 1000 ppm CCLP (CCLP-1), or 2000 ppm CCLP (CCLP-2) for 42 days. Each dietary group had seven replicates with ten birds per replicate. Supplemented birds had higher (P < 0.05) feed efficiency, hemoglobin, and hematocrit compared with the CON birds. Diet did not affect feed intake, body weight gain, splenic interleukin-1β, interleukin-6, interleukin-10, and serum IgM. The CCLP-2 birds had lower (P < 0.05) serum total and LDL cholesterol than did birds fed other treatments. Salmonella spp. and Escherichia coli counts and serum IgG were higher in the CON birds than in the supplemented birds. The ANTIBIOX birds had lower (P < 0.05) Lactobacillus spp. count, and higher (P < 0.05) E. coli count compared with the CCLP-supplemented birds. Carcass, muscle pH, and cook loss were not affected by diet. The CON breast meat had higher drip loss and lower redness than did the breast meat of the supplemented birds. Carbonyl content and TBARS value in the thigh and breast meat of the supplemented birds were lower (P < 0.05) than those of the CON birds. These results infer that CCLP exhibited antioxidant and antimicrobial properties that were comparable to those of BHA and oxytetracycline in the diet of broiler chickens.
评价了在饲料中添加白花丹叶粉（Crassocephalum crepidioides leaf powder，CCLP）与土霉素和丁基羟基茴香醚（butylated hydroxyanisole，BHA）相比对肉鸡生长、盲肠微生物群、免疫状态、血液化学、屠体特性、肉质和氧化稳定性的影响。将 280 只 1 日龄 Arbor acre 小鸡随机分配到基础日粮中，基础日粮中不添加任何添加剂（对照，CON）、添加 400 ppm 土霉素+150 ppm BHA（ANTIBIOX）、添加 1000 ppm CCLP（CCLP-1）或 2000 ppm CCLP（CCLP-2），试验期为 42 天。每个日粮组有 7 个重复，每个重复 10 只鸡。与 CON 组相比，添加 CCLP 的鸡具有更高的（P<0.05）饲料效率、血红蛋白和红细胞压积。日粮不影响采食量、体重增加、脾脏白细胞介素-1β、白细胞介素-6、白细胞介素-10 和血清 IgM。与其他处理组相比，CCLP-2 组鸡血清总胆固醇和 LDL 胆固醇水平较低（P<0.05）。CON 组鸡的血清沙门氏菌和大肠杆菌计数及血清 IgG 高于添加组。与添加 CCLP 的鸡相比，ANTIBIOX 组鸡的乳酸菌计数较低（P<0.05），大肠杆菌计数较高（P<0.05）。屠体、肌肉 pH 和蒸煮损失不受日粮影响。CON 鸡胸肉滴水损失较高，红度较低，与添加组相比。添加组鸡腿肉和鸡胸肉的羰基含量和 TBARS 值均低于 CON 组（P<0.05）。这些结果表明，CCLP 表现出抗氧化和抗菌特性，与饲料中的 BHA 和土霉素相当。
