摘要
This study aims to investigate the effects of commercial probiotic supplementation in water on the performance parameters, carcass traits, immune function, and antioxidant capacity of broiler chicks. In the experiment, 120 Arbor Acres (AA) broilers (60 male and 60 female) were randomly allocated into four groups (G) – G1: basal diet and G2, G3, and G4: basal diet with 1% Lactobacillus casei, 1% L. acidophilus, and 1% Bifidobacterium in the water, lasting 42 days. The experimental results revealed that probiotic additives produced positive impacts on body weight, average daily feed intake (ADFI), and average daily weight gain for female chicks, whereas these probiotics significantly reduced ADFI and the feed conversion ratio of male chicks (P < 0.05). Probiotics efficiently improved eviscerated yield and breast yield while reducing the abdominal fat (P < 0.05) for the male broiler chicks. A marked increase was observed in the weight of the spleen, bursa of Fabricius, and thymus in the treatment group (P < 0.05). Besides, probiotics produced a significant effect on the concentrations of immune-related proteins (P < 0.05) and markedly increased the concentrations of antioxidase and digestive enzymes when compared with the control (P < 0.05). The addition of probiotics dramatically reduced the total counts of Escherichia coli and Salmonella and increased the quantity of Lactobacilli (P < 0.05). The results of the present study demonstrated an increase in growth performance, carcass traits, immune function, gut microbial population, and antioxidant capacity by supplementing 1% probiotics (L. casei, L. acidophilus, and Bifidobacterium) in the water for broilers.
摘要译文
本研究旨在探讨商业益生菌补充在水中对水性参数，胴体性状，免疫功能以及肉鸡小鸡抗氧化能力的影响。在实验中，将120个Arbor Acces（AA）肉鸡（60个雄性和60个雌性）随机分配到四组（g） - g1：基础饮食和G2，G3和G4：基础饮食中，1％乳酸杆菌酪蛋白，1％ L.嗜酸孢菌和水中1％双歧杆菌，持续42天。实验结果表明，益生菌添加剂对体重，平均每日饲料摄入量（ADFI）产生了阳性影响，以及雌性小鸡的平均每日体重增加，而这些益生菌显着降低了雄性小鸡的ADFI和饲料转化率（P <0.05） 。益生菌有效地改善了雌性肉鸡雏鸡的腹部脂肪（P <0.05）的腹部脂肪（P <0.05）。在治疗组的脾脏，粗囊和胸腺的重量中观察到显着的增加（P <0.05）。此外，益生菌对免疫相关蛋白质的浓度产生了显着影响（P <0.05），与对照相比，显着增加了抗氧化酶和消化酶的浓度（P <0.05）。益生菌的添加显着降低了大肠杆菌和沙门氏菌的总数，并增加了乳杆菌的量（P <0.05）。本研究的结果证明了通过补充1％益生菌（L.酪蛋白，L.嗜酸性和双歧杆菌）在水中的肉鸡。
Lihuan Zhang&EMail:tgzhanglh@foxmail.com[1];Ruonan Zhang[1];Hao Jia[1];Zhiwei Zhu[1];Huifeng Li[1];Yueyue Ma[1]. Supplementation of probiotics in water beneficial growth performance, carcass traits, immune function, and antioxidant capacity in broiler chickens[J]. Open Life Sciences, 2021,16(1): 311-322