稀土壳糖胺螯合盐对湖羊生长性能、血液生理生化指标和瘤胃细菌群落结构的影响  

Effects of Rare Earth-Chitosan Chelate on Growth Performance, BloodPhysiological and Biochemical Indexes and Rumen BacterialCommunity Structure of Hu Sheep

作　　者：张菊 何孟莲 田慧丽 础鲁 包全喜 王广敬 都振玉 ZHANG Ju;HE Menglian;TIAN Huili;CHU Lu;BAO Quanxi;WANG Guangjing;DU Zhenyu(Shandong Vocational Animal Science and Veterinary College,Weifang 261061,China;Agriculture,Animal Husbandry,Integrated Administrative and Law Enforcement Unit of Alxa Left Banner,Alax 750300,China;Animal Disease Prevention and Control Center of Keerqin Zuozhong Banner in Tongliao Inner Mongolia,Tongliao 029307,China;Animal Husbandry Development Center of Hanting District in Weifang City,Weifang 261100,China)

机构地区：[1]山东畜牧兽医职业学院,潍坊261061 [2]阿拉善左旗农牧业综合行政执法大队,阿拉善750300 [3]内蒙古通辽市科尔沁左翼中旗动物疫病预防控制中心,通辽029307 [4]潍坊市寒亭区畜牧业发展中心,潍坊261100

出　　处：《动物营养学报》2024年第7期4462-4472,共11页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：山东省科技特派员创新创业共同体潍坊羊产业服务团;山东省现代羊产业体系(SDAIT-10-04)。

摘　　要：本试验目的是通过研究不同剂量稀土壳糖胺螯合盐(RECC)对湖羊生长性能、血液生理生化指标和瘤胃细菌群落结构的影响,为RECC在湖羊饲粮中的添加提供参考。选择体重相近、体质健康的断奶湖羊公羔160只,随机分为4组,每组4个重复,每个重复10只。A组为对照组,饲喂基础饲粮;B组、C组和D组为试验组,在基础饲粮中分别添加250、500和750 mg/kg RECC。预试期为7 d,正试期为60 d。结果显示:1)与A组相比,B组和D组湖羊的平均日增重有所增加,B组、C组和D组的平均日采食量均有所提高,B组的料重比降低,但各组间差异不显著(P>0.05)。2)B组的淋巴细胞计数最高,与A组差异显著(P<0.05),但与其他组差异不显著(P>0.05)。3)B组、C组和D组血清尿素含量均显著低于A组(P<0.05)。4)在门水平上,各组优势菌门均为拟杆菌门和厚壁菌门,排名前10位的菌门的相对丰度各组之间差异不显著(P>0.05);在属水平上,各组的优势菌属均为普雷沃氏菌属、理研菌科RC9肠道群、密螺旋体属,排名前10位的菌属的相对丰度各组之间差异不显著(P>0.05);B组纤维杆菌门和理研菌科RC9肠道群的相对丰度高于其余3组。综合断奶湖羊生长性能、血液生理生化指标和瘤胃细菌群落结构的测定结果可知,本试验条件下,断奶湖羊饲粮中RECC的适宜添加量为250 mg/kg。This experiment was conducted to investigate the effects of different doses of rare earth-chitosan chelate(RECC)on growth performance,blood physiological and biochemical indexes and rumen bacterial community structure of Hu sheep,and to provide reference for the addition of RECC in the diet of Hu sheep.A total of 160 weaned male lamb of Hu sheep with similar body weight and physical health were selected and randomly divided into 4 groups with 4 replicates per group and 10 lamb per replicate.Lamb in group A(control group)were fed a basal diet.Groups B,C and D were the experimental groups,and the diets of them were supplemented with 250,500 and 750 mg/kg RECC based on the basal diet,respectively.The pre-trial period lasted for 7 days and the trial period lasted for 60 days.The results showed as follows:1)compared with the group A,the average daily gain of Hu sheep was increased in the groups B and D,the average daily feed intake was increased in the groups B,C and D,and the feed to gain ratio was decreased in the group B,but there were no differences in those indexes among groups(P>0.05).2)The number of leukomonocyte in the group B was the highest,and the difference was significant compared with the group A(P<0.05),while there was no significant difference among other groups(P>0.05).3)The serum urea content in the groups B,C and D was significantly increased compared with the group A(P<0.05).4)At the phylum level,Bacteroidota and Firmicutes were the dominant phyla in all groups,and there were no significant differences in the relative abundances of the top ten phylum among all groups(P>0.05).At the genus level,the dominant genus in all groups were Prevotella,Rikenellaceae_RC9_gut_group and Treponema,and there were no significant differences in the relative abundances of the top ten genus among all groups(P>0.05).The relative abundances of Fibrobacterota and Rikenellaceae_RC9_gut_group in the group B were higher than those in the other three groups.Based on the results of growth performance,blood physiological and b

关 键 词：稀土壳糖胺螯合盐 湖羊 生长性能 血常规指标 血清生化指标 瘤胃微生物区系 

分 类 号：S816[农业科学—饲料科学]