不同非纤维性碳水化合物/中性洗涤纤维饲粮对欧拉型藏母羊生长性能和血清激素浓度的影响  

Effects of Different Non-Fiber Carbohydrate/Neutral Detergent Fiber Diets on Growth Performance and Serum Hormone Concentrations of Oula Tibetan Ewes

作　　者：周力 桂林生 高占红 李蒋伟 杨葆春[1] 王志有[1] 侯生珍[1] ZHOU Li;GUI Linsheng;GAO Zhanhong;LI Jiangwei;YANG Baochun;WANG Zhiyou;HOU Shengzhen(College of Agriculture and Animal Husbandry,Qinghai University,Qinghai Xining 810016,China)

机构地区：[1]青海大学农牧学院,青海西宁810016

出　　处：《饲料工业》2021年第23期20-24,共5页Feed Industry

基　　金：青海省农牧业科技创新平台[QNKP20180602];藏羊高效养殖技术集成与示范推广[091721301064071017];黑藏羊高效繁育基地与产业化项目[2020GN118];青海省林草局青海湖-祁连山保护体系[K992138]。

摘　　要：试验旨在探索不同非纤维性碳水化合物(Non-fibrous carbohydrate,NFC)/中性洗涤纤维(Neutral detergent fiber,NDF)饲粮对青海欧拉型藏羊生长性能、血清激素含量及经济效益的影响。采用完全随机试验设计,选择体重相近(24.67±1.43)kg且发育良好的3~4月龄藏羊母羔12只,随机分为3个处理组,每组4个重复,每个重复1只羊。分别饲喂NFC与NDF比例为0.92(精粗比为30:70,L组)、1.39(精粗比为50:50,M组)和2.20(精粗比为70:30,H组)的试验饲粮。试验分为预试期8 d,正试期为90 d。结果表明:①H组平均日增重(ADG)和终末重均高于L组(P<0.05)和M组(P>0.05),H组料重比(F/G)显著低于其他2组(P<0.05)。②H组血清促黄体生成素(LH)、促卵泡素(FSH)、催乳素(PRL)和GH(生长激素)含量显著高于L组(P<0.05),但较M组差异不显著,H组和M组血清睾酮(T)含量显著低于L组(P<0.05)。③经计算分析,H组每只羊盈利0.43元/d,分别比L组和M组增加了0.32、0.21元。由此可知,在本试验条件下,藏母羊饲喂NFC/NDF为2.20的饲粮时,可获得最佳的生长性能和经济效益,且血清激素含量均在正常范围。The purpose of this experiment was to explore the effects of different non fibrous carbohydrate(NFC)/neutral detergent fiber(NDF)diets on growth performance,serum hormone content and economic benefits of Qinghai Oula Tibetan sheep.Using a completely randomized trial design,12 well-developed 3-4-month-old Tibetan ewes with similar body weight(24.67±1.43)kg were randomly divided into three treatment groups,with four replicates in each group and one in each replicate.The experimental diets with NFC/NDF ratio of 0.92(fine to coarse ratio of 3070,group L),1.39(fine to coarse ratio of 5050,group M)and 2.20(fine to coarse ratio of 7030,group H)were fed,respectively.The experiment was divided into pre-trial period of 15 days and positive trial period of 90 days.The results showed that:①the average daily gain(ADG)and final weight in group H were higher than those in group L(P<0.05)and group M(P>0.05),F/G of group H was significantly lower than that of the other two groups(P<0.05).②The contents of serum luteinizing hormone(LH),FSH(follicle stimulating hormone),PRL(prolactin)and growth hor⁃mone(GH)in group H were significantly higher than those in group L(P<0.05),but there was no sig⁃nificant difference compared with group M.The contents of testosterone(T)in groups H and M were significantly lower than those in group L(P<0.05).③After calculation and analysis,the profit of each sheep in group H was 0.43 Yuan/d,which was 0.32 Yuan and 0.21 Yuan higher than that in groups L and M,respectively.Under the experimental conditions,Tibetan ewes fed a diet with NFC/NDF of 2.20 could obtain the best growth performance and economic benefits,and the content of serum hormones was in the normal range.

关 键 词：欧拉型藏羊 精粗比 NFC/NDF 生长发育 激素含量 经济效益 

分 类 号：S826.5[农业科学—畜牧学]