饲粮中添加肉桂醛对羔羊生长性能、消化代谢以及微生物蛋白合成的影响  

Effects of Dietary Cinnamaldehyde on Growth Performance,Digestion and Metabolism,and Microbial Protein Synthesis of Lambs

作　　者：崔乔 郝小燕 张宏祥 陈彦华 项斌伟 张文佳 张春香[1] 张建新[1] CUI Qiao;HAO Xiaoyan;ZHANG Hongxiang;CHEN Yanhua;XIANG Binwei;ZHANG Wenjia;ZHANG Chunxiang;ZHANG Jianxin(College of Animal Science,Shanxi Agricultural University,Taigu 030801,China;Xianghe Lingshang Agriculture and Animal Husbandry Development Co.,Ltd.of Shanxi,Youyu 037200,China;Anhong Testing Technology Co.,Ltd.of Shanxi,Taiyuan 030000,China;Animal Husbandry Bureau of Youyu County,Youyu 037200,China)

机构地区：[1]山西农业大学动物科学学院,太谷030801 [2]山西祥和岭上农牧开发有限公司,右玉037200 [3]山西安弘检测技术有限公司,太原030000 [4]山西省右玉县畜牧兽医中心,右玉037200

出　　处：《动物营养学报》2021年第6期3421-3430,共10页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：国家重点研发计划(2018YFD0502104);国家肉羊产业技术体系专项(CARS-38);山西省1331工程建设项目(J201911301);山西省重点研发计划项目(201903D211012);山西省科技成果转化引导专项(201904D131026)。

摘　　要：本试验旨在研究饲粮中添加肉桂醛(CA)对羔羊生长性能、养分表观消化率、能量和氮代谢以及瘤胃微生物蛋白(MCP)合成的影响。试验选取48只体况良好、体重相近的4月龄杜泊×小尾寒羊杂交公羔羊,随机分为4组,每组12只。在每千克基础饲粮中分别添加0(对照组)、200(200CA组)、300(300CA组)、400 mg(400CA组)的CA。预试期15 d,正试期70 d。试验羊单栏舍饲,分别在正试期第1、35、70天晨饲前对试验羊进行称重,并记录采食量,用于计算平均日采食量(ADFI)、平均日增重(ADG)及料重比(F/G)。正试期结束后采用全收粪收尿法进行消化代谢试验,预试期7 d,正试期5 d,正试期每日晨饲前收集粪样和尿样,测定粪样中能量和各养分含量以及尿氮和嘌呤衍生物等。结果显示:1)各组间ADFI无显著差异(P>0.05),300CA组的ADG显著高于对照组(P<0.05),200CA组和300CA组的F/G显著低于对照组(P<0.05);2)300CA组的干物质(DM)、有机物(OM)、中性洗涤纤维(NDF)及酸性洗涤纤维(ADF)表观消化率显著高于对照组(P<0.05);3)各组间摄入总能无显著差异(P>0.05),300CA组的粪能显著低于对照组(P<0.05),3个CA添加组的消化能和总能表观消化率显著高于对照组(P<0.05);4)各组间摄入氮、尿氮无显著差异(P>0.05),300CA组的沉积氮、氮沉积率和氮表观消化率显著高于对照组(P<0.05);5)3个CA添加组的尿酸排泄量显著高于对照组(P<0.05),300CA组的黄嘌呤+次黄嘌呤及总嘌呤衍生物排泄量显著高于对照组(P<0.05)。200CA组、300CA组的MCP合成量显著高于对照组(P<0.05)。综上所述,饲粮中添加适量的CA在羔羊生产中具有积极的意义,可以提高ADG,降低F/G,促进饲粮营养物质的消化利用以及羔羊瘤胃中MCP的合成,并可提高羔羊对能量及氮的利用率。在本试验条件下,CA在羔羊饲粮中的最适添加量为300 mg/kg。This experiment was conducted to investigate the effects of dietary cinnamaldehyde(CA)on growth performance,nutrient apparent digestibility,energy and nitrogen metabolism,and rumen microbial protein synthesis of lambs.Forty-eight 4-month-old Dorper×thin-tailed Han hybrid male lambs with similar body weight were randomly divided into four groups with twelve lambs in each group.Treatments consisted of the lambs’basal diet with addition of 0(control group),200(200CA group),300(300CA group),400 mg/kg CA(400CA group).The pre-experimental period lasted for 15 days,and the experimental period lasted for 70 days.Lambs were housed and fed in individual stalls,and the feed intake was recorded daily.Body weight was measured before the morning feeding on days 1,35 and 70 of the experimental period before the morning feeding.The average daily feed intake(ADFI),average daily gain(ADG)and feed/gain(F/G)were calculated.At the end of the experimental,the digestive and metabolic test was carried out by the method of total fecal collection and urine collection.After 7 days of adaptation,the feces and urine samples for each lamb were collected for 5 consecutive days.Then nutrient contents and energy in feces,urinary nitrogen and purine derivatives were measured.The results showed as follows:1)there was no significant difference in ADFI among groups(P>0.05),the lambs of 300CA group had significantly higher ADG than those of control group(P<0.05).The F/G of 200CA and 300CA groups were significantly lower than that of control group(P<0.05).2)The apparent digestibility of dry matter(DM),organic matter(OM),neutral detergent fiber(NDF)and acid detergent fiber(ADF)of 300CA group was significantly higher than that of control group(P<0.05).3)There was no significant difference in gross energy intake among groups(P>0.05).The fecal energy of 300CA group was significantly lower than that of control group(P<0.05).The digestible energy and apparent digestibility of gross energy of three CA addition groups were significantly higher than those o

关 键 词：羔羊 肉桂醛 生长性能 养分表观消化率 能量代谢 氮代谢 微生物蛋白 

分 类 号：S816[农业科学—饲料科学]