低代谢能饲粮添加叶绿素和维生素B_(12)对黄羽肉鸡生长性能、肉品质、血常规指标和养分利用率的影响  

Effects of Low Metabolizable Energy Diet Supplemented with Chlorophyll and Vitamin B_(12) on Growth Performance,Meat Quality,Blood Routine Indices and Nutrient Utilization of Yellow⁃Feathered Chickens

作　　者：阮栋 林厦菁 张赛 刘平祥 刘金萍 叶金玲 丁发源 程镜蓉 郑春田 蒋守群 RUAN Dong;LIN Xiajing;ZHANG Sai;LIU Pingxiang;LIU Jinping;YE Jinling;DING Fayuan;CHENG Jingrong;ZHENG Chuntian;JIANG Shouqun(Guangdong Provincial Key Laboratory of Animal Breeding and Nutrition,Key Laboratory of Animal Nutrition and Feed Science in South China,Ministry of Agriculture and Rural Affairs,State Key Laboratory of Livestock and Poultry Breeding,Institute of Animal Science,Guangdong Academy of Agricultural Sciences,Guangzhou 510640,China;Guangdong Drive Bio-Tech Group Co.,Ltd.,Guangzhou 510640,China;Guangdong Provincial Key Laboratory of Agricultural Product Processing,Key Laboratory of Functional Foods,Ministry of Agriculture and Rural Affairs,Sericultural and Agri-Food Research Institute,Guangdong Academy of Agricultural Sciences,Guangzhou 510640,China)

机构地区：[1]广东省农业科学院动物科学研究所,畜禽育种国家重点实验室,农业农村部华南动物营养与饲料重点实验室,广东省畜禽育种与营养重点实验室,广州510640 [2]广东驱动力生物科技集团股份有限公司,广州510640 [3]广东省农业科学院蚕业与农产品加工研究所,农业农村部功能食品重点实验室,广东省农产品加工重点实验室,广州510640

出　　处：《动物营养学报》2023年第7期4287-4300,共14页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：广东省农业科学院食品营养与健康研究中心建设运行经费(XTXM202205);广东省农业科学院科技计划项目(202106TD);广东省农业科学院高水平科技创新战略建设专项资金(R2019PY-QF008);广东省自然科学基金项目(2019A1515010912);广东省重点领域研发计划项目(2020B0202090004);国家重点研发专项(2021YFD300404);国家肉鸡产业技术体系项目(CARS-41-G10);广东省科技计划项目(2019A050505007)。

摘　　要：本试验旨在研究低代谢能饲粮添加天然植物来源的叶绿素和维生素B_(12)对快速型黄羽肉鸡生长性能、肉品质、血常规指标和养分利用率的影响。试验选用720羽22日龄快速型黄羽肉鸡母鸡,按体重一致原则随机分为4个组,每组6个重复,每个重复30只鸡。对照组饲喂基础饲粮,低代谢能Ⅰ组饲喂基础饲粮代谢能降低0.42 MJ/kg的低代谢能Ⅰ饲粮,低代谢能Ⅰ+叶绿素和维生素B_(12)复合物组饲喂在低代谢能Ⅰ饲粮中添加40 mg/kg叶绿素和0.04 mg/kg维生素B_(12)的饲粮,低代谢能Ⅱ+叶绿素和维生素B_(12)复合物组饲喂在基础饲粮代谢能降低0.84 MJ/kg的低代谢能Ⅱ饲粮中添加40 mg/kg叶绿素和0.04 mg/kg维生素B_(12)的饲粮。试验期28 d,分为22~42日龄和43~49日龄2个阶段。试验鸡地面平养,自由采食和饮水。结果表明:1)与对照组相比,低代谢能Ⅰ组黄羽肉鸡22~49日龄平均日增重和50日龄体重显著降低(P<0.05)。与低代谢能Ⅰ组相比,低代谢能Ⅰ+叶绿素和维生素B_(12)复合组22~49日龄平均日增重和50日龄体重显著提高(P<0.05),且与对照组相比差异不显著(P>0.05)。2)与对照组相比,低代谢能Ⅰ组黄羽肉鸡全净膛率显著降低(P<0.05),而低代谢能Ⅰ+叶绿素和维生素B_(12)复合组和低代谢能Ⅱ+叶绿素和维生素B_(12)复合组全净膛率则无显著差异(P>0.05)。与对照组和低代谢能Ⅰ组相比,低代谢能Ⅰ+叶绿素和维生素B_(12)复合组胸肌45 min pH和24 h红度(a*)值显著提高(P<0.05),胸肌滴水损失显著降低(P<0.05)。3)与对照组和低代谢能Ⅰ组相比,低代谢能Ⅰ+叶绿素和维生素B_(12)复合组黄羽肉鸡血液血红蛋白(HGB)含量和红细胞压积(HCT)显著提高(P<0.05)。与对照组相比,低代谢能Ⅰ+叶绿素和维生素B_(12)复合组红细胞平均血红蛋白浓度(MCHC)显著提高(P<0.05)。4)与低代谢能Ⅰ组相比,低代谢能Ⅰ+叶绿素和维生素B_(12)复合组黄羽肉鸡血浆丙二�This experiment was conducted to investigate the effects of low metabolizable energy(ME)diet supplemented with natural plant source chlorophyll and vitamin B_(12)(VB_(12))on growth performance,meat quali⁃ty,blood routine indices and nutrient utilization of fast⁃growing type yellow⁃feathered chickens.A total of 720 fast⁃growing type female yellow⁃feathered chickens of 22⁃day⁃old were randomly divided into 4 groups with 6 replicates per group and 30 chickens per replicate according to the same body weight.Chickens in the control group were fed a basal diet,those in low ME groupⅠwere fed the low MEⅠdiet which reduced ME by 0.42 MJ/kg in the basal diet,those in low MEⅠ+chlorophyll and VB_(12) compound group were fed the low MEⅠdiet supplemented with 40 mg/kg chlorophyll and 0.04 mg/kg VB_(12),and those in low MEⅡ+chloro⁃phyll and VB_(12) compound group were fed the low MEⅡdiet supplemented with 40 mg/kg chlorophyll and 0.04 mg/kg VB_(12),which reduced ME by 0.84 MJ/kg in the basal diet,respectively.The experiment lasted for 28 days and was divided into 22 to 42 days of age and 43 to 49 days of age.During the experiment,chickens were raised flat on the ground and fed pellet feed and drank freely.The results showed as follows:1)com⁃pared with the control group,the average daily gain from 22 to 49 days of age and body weight of yellow⁃feathered chickens at 50 days of age in low MEⅠgroup were significantly decreased(P<0.05).Compared with low MEⅠgroup,the average daily gain from 22 to 49 days of age and body weight at 50 days of age in low MEⅠ+chlorophyll and VB_(12) compound group were significantly increased(P<0.05),but there were no significant differences compared with the control group(P>0.05).2)Compared with the control group,the e⁃viscerated yield rate of yellow⁃feathered chickens in low MEⅠgroup was significantly decreased(P<0.05),but there was no significant difference in the eviscerated yield rate in low MEⅠ+chlorophyll and VB_(12) com⁃pound group and low MEⅡ+chl

关 键 词：叶绿素 维生素B_(12) 黄羽肉鸡 生长性能 血常规指标 养分利用率 

分 类 号：S816[农业科学—饲料科学]