甘草提取物、乳酸菌及其联合添加对肉鸡生长性能、 屠宰性能、肉品质、营养物质表观代谢率及血清生化指标的影响  

Effects of Glycyrrhiza uralensis Extract,Lactic Acid Bacteria and Their Combined Supplementation on Growth Performance,Slaughter Performance,Meat Quality,Nutrient Apparent Metabolic Rates and Serum Biochemical Indexes of Broilers

作　　者：李帅兵 符璐 田程程 蒋苏苏 宋苏堤[1] 陈妍 张国华[1] 卢建雄[1] LI Shuaibing;FU Lu;TIAN Chengcheng;JIANG Susu;SONG Sudi;CHEN Yan;ZHANG Guohua;LU Jianxiong(College of Life Science and Engineering,Northwest Minzu University,Lanzhou 730124,China;Gansu Agriculture Vocational and Technical College,Lanzhou 730030,China)

机构地区：[1]西北民族大学生命科学与工程学院,兰州730124 [2]甘肃农业职业技术学院,兰州730030

出　　处：《动物营养学报》2023年第5期2956-2968,共13页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：甘肃省自然科学基金项目(20JR5RA504);中央高校专项资助项目“农业、农村、农民”问题研究专项(31920210130)。

摘　　要：本试验旨在研究甘草提取物、乳酸菌及其联合添加对肉鸡生长性能、屠宰性能、肉品质、营养物质表观代谢率及血清生化指标的影响。选取健康状况良好的1日龄雄性良凤花肉鸡420只,随机分为4组,每组7个重复,每个重复15只。4组试验鸡分别饲喂基础饲粮(对照组)、基础饲粮+0.1%甘草提取物(甘草组)、基础饲粮+4.5×10^(7) CFU/g嗜酸乳杆菌(乳酸菌组)和基础饲粮+0.1%甘草提取物+4.5×10^(7) CFU/g嗜酸乳杆菌(联合组)。试验期84 d。结果显示:1)与对照组相比,甘草组和乳酸菌组肉鸡56和84日龄体重显著增加(P<0.05),57~84日龄平均日增重(ADG)显著提高、料重比(F/G)显著降低(P<0.05);甘草组和联合组肉鸡29~56日龄及57~84日龄平均日采食量(ADFI)显著提高(P<0.05)。联合组肉鸡56和84日龄体重、57~84日龄ADG和ADFI及1~84日龄ADFI显著高于甘草组和乳酸菌组(P<0.05)。2)与对照组相比,甘草组、乳酸菌组及联合组肉鸡全净膛率显著提高(P<0.05),腹脂率显著降低(P<0.05);联合组腹脂率显著低于甘草组和乳酸菌组(P<0.05)。3)甘草组、乳酸菌组及联合组肉鸡胸肌红度(a*)值显著高于对照组(P<0.05),且甘草组和乳酸菌组显著高于联合组(P<0.05),其他肉质性状指标在各组之间差异不显著(P>0.05)。4)甘草组、乳酸菌组和联合组肉鸡粗蛋白质(CP)、粗脂肪(EE)和粗纤维(CF)表观代谢率较对照组显著提高(P<0.05),且联合组显著高于甘草组和乳酸菌组(P<0.05)。5)28和84日龄肉鸡血清谷丙转氨酶(ALT)、谷草转氨酶(AST)和碱性磷酸酶(ALP)活性及高密度脂蛋白胆固醇(HDL-C)和尿素氮(UN)含量在各组之间差异不显著(P>0.05),但甘草组和乳酸菌肉鸡28日龄血清总胆固醇(TC)含量及84日龄血清TC和低密度脂蛋白胆固醇(LDL-C)含量显著低于对照组(P<0.05);此外,联合组肉鸡28和84日龄血清TC和LDL-C含量均显著低于甘草组和乳酸菌组(P<0.05)。综上所述,饲粮中添加This experiment was conducted to study the effects of dietary Glycyrrhiza uralensis extract(GUE),lactic acid bacteria(LAB)and their combined supplementation on growth performance,slaughter performance,meat quality,nutrient apparent metabolic rates and serum biochemical indexes of broilers.A total of 420 one-day-old healthy male Liangfeng broilers were randomly divided into four groups with seven replicates per group and 15 broilers per replicate.They were fed basal diet(control group),basal diet+0.1%GUE(GUE group),basal diet+4.5×10^(7) CFU/g Lactobacillus acidophilus(LAB group),and basal diet+0.1%GUE+4.5×10^(7) CFU/g Lactobacillus acidophilus(GUE+LAB group),respectively.The experiment lasted for 84 d.The results showed as follows:1)compared with the control group,the body weight of broilers in the GUE group and LAB group was significantly increased at 56 and 84 days of age(P<0.05),and the average daily gain(ADG)was significantly increased and feed/gain ratio(F/G)was significantly decreased at 57 to 84 days of age(P<0.05);the average daily feed intake(ADFI)was significantly increased at 29 to 56 days of age and 57 to 84 days of age in the GUE group and GUE+LAB group(P<0.05).The body weight at 56 and 84 days of age,the ADG and ADFI at 57 to 84 days of age,and ADFI at 1 to 84 days of age in the GUE+LAB group were significantly higher than those in the GUE group and Lac group(P<0.05).2)Compared with the control group,the eviscerated percentage of broilers was significantly increased(P<0.05),and the abdominal fat percentage was significantly decreased in the GUE group,LAB group and GUE+LAB group(P<0.05).The abdominal fat percentage of broilers in the GUE+LAB group was significantly lower than that in the GUE group and LAB group(P<0.05).3)The redness(a*)value of breast muscle in the GUE group,LAB group and GUE+LAB group was significantly higher than that in the control group(P<0.05),and it in the GUE group and LAB group was significantly higher than it in the GUE+LAB group(P<0.05),but there were no significant differ

关 键 词：甘草提取物 乳酸菌 肉鸡 生长性能 肉品质 表观代谢率 血清生化指标 

分 类 号：S815.8[农业科学—畜牧学]