摘要
Antimicrobial resistance is a significant issue, therefore it's relevant to assess the effects of antibiotics, acidifiers, and probiotic supplementation finding a good alternative to reduce the use of antibiotics in broiler production in rural areas of Bangladesh. Using randomized control trial, this 28-day study evaluated 360 Hubbard Classic broiler chicks divided into four groups: oxytetracycline-treated, acidifier-treated, Lactobacillus-based probiotic-treated, and control (no antibiotics, acidifiers, or probiotics). Each group was replicated three times with 30 birds each with adlibitum feeding. Body weight and feed intake were recorded weekly, and on 28th day, carcass traits and blood lipoprotein levels were evaluated. Results showed that in first and fourth weeks, the body weight gain significantly varied in probiotics and acidifier-treated birds than the control group (P < 0.001). The probiotic group had gained considerable increase in body weight (185.0 g vs 161.7 g and 1745.0 g vs 1592.7 g) than the control group. Notably, in the first week, the feed conversion ratio for the probiotic group was 0.76, but the antibiotic group's was 0.96 (P < 0.001). The weights of the drumstick (88.33 g) and liver (61.0 g) having probiotic supplements were substantially higher than those in the control group (77.0 g and 51.33 g, respectively) (P < 0.001). According to serum lipoprotein analysis, the probiotic and acidifier groups exhibited lower LDL levels (71.1 mg/dl and 69.8 mg/dl, respectively) and higher triglyceride levels (122.9 mg/dl and 135.4 mg/dl). These findings highlight the potential of probiotics and acidifiers as effective antibiotic alternatives, promoting carcass traits and lowering LDL levels in broilers in Bangladesh.
摘要译文
抗菌耐药性是一个重要的问题，因此，评估抗生素，酸性剂和补充益生菌的作用是相关的，找到了减少孟加拉国农村地区肉鸡生产中使用抗生素的良好替代方法。这项为期28天的研究使用随机对照试验评估了360个Hubbard Classic肉鸡小鸡分为四组：经过氧气治疗，经过酸化剂，经过酸化剂治疗，基于乳糖核酸的益生菌治疗和对照（无抗生素，酸性，酸性药物或益生菌）。每组用30只鸟和adlibitum喂养复制三次。每周记录体重和饲料摄入量，并在第28天评估了car体性状和血液脂蛋白水平。结果表明，在第一周和第四周，体重在益生菌和酸化剂治疗的鸟类上的增长明显差异（p <0.001）。益生菌组比对照组的体重增加了（185.0 g vs 161.7 g和1745.0 g vs 1592.7 g）。值得注意的是，在第一周，益生菌组的饲料转化率为0.76，但抗生素组为0.96（p <0.001）。具有益生菌补充剂的鸡腿（88.33 g）和肝脏（61.0 g）的重量大大高于对照组（分别为77.0 g和51.33 g）（p <0.001）。根据血清脂蛋白分析，益生菌和酸化剂组表现出较低的LDL水平（分别为71.1 mg/dL和69.8 mg/dL）和较高的甘油三酸酯水平（122.9 mg/dl和135.4 mg/dl）。这些发现凸显了益生菌和酸化剂作为有效抗生素替代品的潜力，促进了car体性状，并降低了孟加拉国肉鸡的LDL水平。
Tilak Chandra Nath [d]. Effects of antibiotic, acidifier, and probiotic supplementation on mortality rates, lipoprotein profile, and carcass traits of broiler chickens[J]. Veterinary and Animal Science, 2023,22: 100325