苜蓿和红车轴草黄酮提取物对绵羊生长性能和血液相关指标的影响

为研究苜蓿和红车轴草黄酮提取物对绵羊生长性能、血液生化指标、激素和抗氧化性的影响,选取36只1.5月龄杜湖杂交公羔羊,随机分成3组,每组12只,对照组饲喂基础日粮,苜蓿组饲喂添加苜蓿黄酮提取物20mg/kg,红车轴草组添加红车轴草黄酮提取物15mg/kg。预饲期10d,正试期60d,分别对各组绵羊生长性能、血液生化指标、激素和抗氧化性指标进行测量。结果表明,添加苜蓿和红车轴草黄酮提取物提高了血清中生长激素(GH)、胰岛素生长因子1(IGF-1)和三碘甲腺原氨酸(T3)含量;显著提高肉羊的日增质量(P<0.05),降低料重比;显著降低血清中甘油三酯(TG)和总胆固醇(TC)含量(P<0.05);提高了谷胱甘肽过氧化物酶(GSH-Px)、超氧化物歧化酶(SOD)和过氧化氢酶(CAT)活性,降低丙二醛(MDA)的含量,增强肉羊的抗氧化性能。综上所述,试验中苜蓿和红车轴草黄酮提取物添加量可以调节绵羊血液抗氧化性能、激素和部分生化指标,提高肉羊的日增质量。     

苜蓿多糖对肉仔鸡生长性能及血清生化指标的影响

选择480羽1日龄的艾维茵肉仔鸡,随机分为4个处理,饲喂基础日粮为对照组,试验组分别在基础日粮中添加0.5%、1%和2%的苜蓿多糖,研究苜蓿多糖对肉鸡生长性能和血清生化指标的影响。试验结果表明：添加1%苜蓿多糖能显著提高肉鸡体重、日增重（P〈0.05）,显著降低料重比（P〈0.05）。苜蓿多糖对血清总蛋白、血糖、血钙和血磷的影响不显著（P〉0.05）。     

复合添加剂对冷季绵羊生长性能和血清生化指标的影响

本试验旨在研究复合添加剂对冷季绵羊生长性能和血清生化指标的影响,为提高冷季绵羊的生长性能及抗病能力提供数据参考。试验选用体重[(39.64±2.72) kg]相近、健康状况良好的6月龄阿勒泰羊公羊60只,随机分为4个组,每组3个重复,每个重复5只羊。对照组饲喂基础饲粮,复合添加剂1组(T₁组)在基础饲粮中添加2.2%的复合添加剂Ⅰ(沙棘叶粉∶氯化铵∶谷氨酰胺=15∶5∶2),复合添加剂2组(T₂组)在基础饲粮中添加2.2%的复合添加剂Ⅱ(沙棘叶粉∶氯化铵∶胍基乙酸=15∶5∶1),复合添加剂3组(T₃组)在基础饲粮中添加2.2%的复合添加剂Ⅲ(沙棘叶粉∶氯化铵∶谷氨酰胺∶胍基乙酸=15∶5∶2∶1)。预试期15 d,正试期30 d。结果表明：1)T₁组、T₂组和T₃组第1～15天、第16～30天和第1～30天平均日采食量显著或极显著高于对照组(P<0.05或P<0.01),T₁组和T₃组第1～15天料...     

纳豆芽孢杆菌对绵羊生长性能、消化性能和血清生化指标的影响

本试验旨在研究纳豆芽孢杆菌(BSN)对绵羊生长性能、养分表观消化率和血清生化指标的影响。试验采用单因素完全随机试验设计,将体重相近的40只小尾寒羊分为4组,每组10只,每日饲喂在基础饲粮中分别添加0(CK组)、2(A组)、6(B组)和10g/只(C组)BSN的饲粮。结果表明:1)与CK组相比,A、B和C组的平均日增重(ADG)分别提高33.43(P>0.05)、32.29(P<0.05)和57.15g/d(P<0.01)。2)各养分表观消化率随饲粮中BSN添加水平的增加有所提高,但组间差异不显著(P>0.05)。3)A、B和C组血清中尿素氮含量分别比CK组降低0.73%、23.44%和30.04%(P>0.05);血清中免疫球蛋白(Ig)A、IgG和IgM含量组间差异不显著(P>0.05)。在本试验条件下,绵羊饲粮中添加BSN对提高饲粮蛋白质的沉积有积极影响,ADG随BSN添加水平的增加显著增加,每日在饲粮中添加10g/只BSN效果显著。     

饲粮添加万寿菊粕对绵羊生长性能、瘤胃发酵参数和血清生化指标的影响

为探究饲粮中添加不同水平万寿菊粕对绵羊生长性能、瘤胃发酵参数和血清生化指标的影响,采用单因素完全随机试验设计,选取体重为（28.30±3.95） kg的杜泊羊×湖羊杂交F1代公羔50只,随机分为5组,每组5个重复,每个重复2只,每组小群饲养。各组分别饲喂添加0（对照）、5%、15%、25%和35%万寿菊粕（干物质基础）的等能等氮全混合颗粒饲粮。预试期10 d,正试期30 d。试验结束后分析生长性能、瘤胃发酵参数和血清生化指标。结果表明：1)15%组与25%组的干物质采食量（DMI）极显著高于对照组和35%组（P<0.01）,5%组极显著高于对照组（P<0.01）。除35%组外,万寿菊粕添加组的平均日增重（ADG）均高于对照组,15%组显著高于对照组（P<0.05）。15%组料重比（F/G）最低,且与5%组无显著差异（P>0.05）,但极显著低于其他各组（P<0.01）。2）瘤胃发酵参数中,25%组乙酸含量显著高于35%组（P<0.05）,35%组丁酸含量显著高于对照组（P<0.05）。3）血清生化指标方面,5%组葡萄糖（GLU）含量显著高于25...     

甘草茎叶对绵羊生长性能和血液生理生化指标的影响

试验研究甘草茎叶替代苜蓿干草对绵羊生长性能和血液生理生化指标的影响。对照组、试验Ⅰ组、试验Ⅱ组绵羊分别用0%、25%、50%甘草茎叶替代饲粮中苜蓿干草。结果表明:对照组平均日增重显著高于试验Ⅰ组(P0.05),极显著高于试验Ⅱ组(P0.01),且随着甘草茎叶的替代苜蓿水平的增加,绵羊的日增重反而呈现出降低的趋势。试验第55 d,试验Ⅰ、Ⅱ组绵羊血清中白细胞、红细胞、平均血红蛋白量、平均血红蛋白浓度与对照组相比差异均不显著(P0.05),但试验Ⅱ组绵羊血液血红蛋白水平显著高于对照组(P0.05)。试验Ⅰ组血清中谷草转氨酶水平显著低于对照组(P0.05),试验Ⅰ、Ⅱ组血清中总蛋白、白蛋白水平显著高于对照组(P0.05),试验Ⅰ组血清中磷水平显著高于对照组(P0.05);试验Ⅰ、Ⅱ组绵羊血清中谷丙转氨酶、球蛋白、碱性磷酸酶、葡萄糖、甘油三酯、总胆固醇、低密度脂蛋白、尿素氮、肌酐、钙水平与对照组相比差异均不显著(P0.05)。甘草茎叶替代苜蓿干草的比例应低于25%,甘草茎叶能在一定程度上提高动物的免疫功能。     

饲粮中添加苜蓿多糖对保育猪生长性能及血清生化指标的影响

为研究饲粮中添加苜蓿多糖对保育猪生长性能及血清生化指标的影响,采用单因子试验设计,选择144头体重7.5 kg左右健康杜长大三元杂种保育猪,随机均分4组,每组36头,设6个重复,每个重复6头,公母各半。对照组饲喂基础饲粮,0.5%、1%、1.5%苜蓿多糖组分别在基础饲粮中添加0.5%、1%、1.5%苜蓿多糖。结果显示,与对照组相比,0.5%、1%、1.5%苜蓿多糖组末重分别提高1.82%、2.68%、1.06%,日增重分别提高3.07%、4.52%、1.66%,料重比分别降低7.02%、10.53%、4.09%,且1%苜蓿多糖组效果最好,3个指标均与对照组差异显著（P0.05）。结论：在饲粮中添加苜蓿多糖可改善保育猪生长性能,适宜添加量为1%。     

苦荞黄酮对断奶仔猪生长、消化性能及血清指标的影响

文章为了探明饲粮补饲苦荞黄酮对断奶仔猪的生长、消化性能及血液生理生化指标的影响,进行了试验.该试验选取体重和日龄均相近的断奶仔猪32头,随机分为4组,每组8个重复.对照组(CON)在基础饲粮中添加40 mg/kg硫酸黏杆菌素;试验组(BF20、BF40、BF60)在基础饲粮中补充20、40、60 mg/kg苦荞黄酮(有...     

苜蓿黄酮对崇仁麻鸡生长性能及肌肉化学成分的影响

探讨了不同水平苜蓿黄酮对崇仁麻鸡母雏后期生长性能、屠宰性能及肌肉化学成分的影响.选用30日龄健康崇仁麻鸡母雏480只,随机分为4组,每组4个重复,每个重复30只.Ⅰ组、Ⅱ组、Ⅲ组、Ⅳ组分别在基础饲粮中添加0,0.05％,0.10％和0.15％的苜蓿黄酮.预试期5d,正试期28 d.试验结果表明:与对照组相比,试验组添加苜蓿黄酮后平均日采食量有下降趋势(P＞0.05),日增重和饲料报酬提高(P＞0.05),其中以组Ⅲ效果最好,日增重比对照组提高3.27％ (P＞0.05),料重比降低5.82％ (P＞0.05).苜蓿黄酮对崇仁麻鸡母雏屠宰性能和肌肉蛋白质、肌苷酸含量无影响(P＞0.05),但抑制了鸡只的脂肪沉积,其中Ⅲ组的皮下脂肪厚度和肌间脂肪宽度分别比对照组低26.22％和20.53％(P＜0.05),Ⅳ组的腹脂率和腿肌脂肪含量分别比对照组低11.66％ (P＜0.01)和9.35％ (P＜0.05).由上可知,生长后期的崇仁麻鸡母雏饲粮中添加苜蓿黄酮后,生产性能不受影响而平均日采食量下降,脂肪沉积减少,综合考虑以0.10％的苜蓿黄酮添加量较为适宜.     

复合营养调控剂对冷季放牧绵羊生长性能、屠宰性能和血清生化指标的影响

试验旨在研究不同营养调控剂对冷季放牧绵羊生长性能、屠宰性能和血清生化指标的影响。采用单因素完全随机区组试验设计,将48只健康、体重相近(28.01±1.70)kg的7月龄放牧母羊随机分为4组,Ⅰ组不补饲;Ⅱ组补饲常规精料;Ⅲ组补饲常规精料+复合配方1 (0.30%苹果酸、0.06%半胱胺、0.08%糖萜素);Ⅳ组补饲常规精料+饲料复合配方2 (0.60%苹果酸、0.12%半胱胺、0.16%糖萜素)。其中每组3个重复,每个重复4只,进行45 d饲养试验。结果表明:①试验Ⅲ组末重最高,较Ⅱ组和Ⅳ组分别提高6.26% (P>0.05)、3.69% (P>0.05);试验Ⅲ组平均日增重最高,较Ⅱ组和Ⅳ组分别提高26.32% (P<0.01)、5.74% (P>0.05)。②试验Ⅲ组的屠宰率较Ⅱ组提高4.68% (P>0.05);试验Ⅲ组的净肉率较Ⅰ组、Ⅱ组和Ⅳ组分别提高18.46% (P<0.05)、10.97% (P>0.05)和4.40% (P>0.05);试验Ⅲ组的胴体净肉重较Ⅰ组、Ⅱ组和Ⅳ组分别提高49.74% (P<0.01)、13.22% (P>0.05)和18.27% (P<0.05);试验Ⅲ组的胴体净肉率较Ⅰ组、Ⅱ组和Ⅳ组分别提高10.42% (P<0.01)、6.00% (P>0.05)和3.37% (P>0.05)。③在血清GLU、Ca、P、HDL、LDL、GPT、IgG含量中,试验Ⅰ、Ⅱ、Ⅳ和Ⅲ组依次呈上升趋势,而其A/G、TG含量依次呈下降趋势。综上,补饲复合营养调控剂可改善冷季放牧绵羊的生长性能、屠宰性能和血清生化指标,其中补饲复合配方1组(试验Ⅲ组)作用效果最佳。     

Effect of Alfalfa Flavonoids on Growth Performance and Serum Indexes of Sheep

This experiment was conducted to evaluate the effect of alfalfa flavonoids (Medicago sativa) on growth performance and serum indexes of sheep.This experiment was performed with hybrid F1 sheep of Suffolk sheep×Small-tailed Han sheep.Twenty-eight sheep with the body weight of (27.02±3.03) kg were randomly divided into 4 groups with 7 replicates in each group and 1 sheep per replicate.Sheep in different groups were fed diets with 0 (group Ⅰ), 0.1% (group Ⅱ), 0.2%(group Ⅲ) and 0.4% (group Ⅳ) alfalfa flavonoids, respectively.The experiment was cosisted of 7-day-preliminary trial and 41-day-formal trial.The results showed as follows:① Dietary supplementation of alfalfa flavonoids had no significant effects on growth performance of sheep(P>0.05).② Dietary supplementation of alfalfa flavonoids had significant effects on the contents of GLB, ASP, BUN, HDL and P in serum (P<0.05).Serum GLB content at the 1st day in group Ⅲ was significantly lower than that in groupsⅠand Ⅱ(P<0.05), serum ASP contents at the 1st and 21th days in group Ⅳ were significantly lower than those in group Ⅰ(P<0.05), serum BUN content at the 1st day in group Ⅳ was significantly lower than that in group Ⅰ(P<0.05), serum HDL content at the 21th day in group Ⅱ was significantly lower than that in groups Ⅰ and Ⅲ (P<0.05), serum P content in group Ⅳ at the 21th day was significantly lower than that in groups Ⅱ and Ⅲ (P<0.05).In conclusion, dietary supplementation of alfalfa flavonoids might modulate lipid metabolism, improve nitrogen utilization, maintain energy metabolic and balance Ca and P contents, and have the potential function for promoting growth and no adverse effect on liver.The results suggested that the appropriate supplemental level of alfalfa flavonoids for sheep was 0.2%.     

不同添加形式的亚麻油对肉羊生长性能、屠宰性能及血清生化指标的影响

本试验旨在研究日粮中添加不同形式的亚麻油对肉羊生长性能、屠宰性能及血液脂代谢相关生化指标的影响。选取体重相近的健康杜泊羊（♂）×小尾寒羊（♀）杂交F2代公羔24只,采用单因子完全随机试验设计,随机分为4组,每组6只。CON组为对照组,饲喂基础日粮;LO、L、LOM组为试验组,分别添加含油量4%的亚麻油、亚麻籽炒粒、亚麻油微胶囊脂末。试验期50 d。结果显示：①日粮添加亚麻籽、亚麻油微胶囊脂末能够提高羔羊的生长性能和屠宰性能,L、LOM组平均日增重（ADG）均显著高于LO组（P < 0.05）;②LOM组背膘厚显著高于CON组及L组（P < 0.05）,但各组间其他屠宰性能指标差异均不显著（P > 0.05）;③不同形式的亚麻油均能够显著提高血清中总胆固醇（TC）、低密度脂蛋白胆固醇（LDL-C）、高密度脂蛋白胆固醇（HDL-C）含量（P < 0.05）,显著降低LO及L组（INS）浓度（P < 0.05）,血清中葡萄糖（GLU）、甘油三酯（TG）及瘦素（LEP）含量虽有上升趋势,但各组间差异不显著（P > 0.05）;④不同形式的亚麻油对瘤胃pH影响不显著（P > 0.05）,但LOM组可显著提高瘤胃氨态氮（NH₃-N）浓度和微生物蛋白（MCP）含量（P < 0.05）。综上所述,亚麻油不同添加形式对血液脂代谢没有产生不良影响,可提高血清TC、LDL-C及HDL-C含量,降低INS的浓度;直接添加亚麻油将对肉羊生长有一定的负面影响,可降低ADG及MCP浓度;添加亚麻籽炒粒和亚麻油微胶囊脂末均可提高肉羊生产性能和瘤胃发酵功能,但添加微胶囊脂末效果更好。     

Effects of Complex Nutritional Regulation Additives on Growth Performance,Slaughter Performance and Serum Biochemical Indexes of Grazing Sheep in Cold Season

This experiment was conducted to investigate the effects of complex nutritional regulation additives on growth performance, slaughter performance and serum biochemical indexes of grazing sheep in cold season.A single factor random block design was used and 48 grazing ewes with the average weight (28.01±1.70) kg and 7 months old were randomly divided into 4 groups:Group Ⅰ without supplement;Group Ⅱ with concentrate;Group Ⅲ with concentrate+complex formulation 1 (0.30% malic acid, 0.06% cysteamine, 0.08% saccharicterpenin);Group Ⅳ with concentrate+complex formulation 2 (0.60% malic acid, 0.12% cysteamine, 0.16% saccharicterpenin)with 3 replicates per group and 4 grazing ewes per replicate.The results showed that:①The final weight of group Ⅲ was the highest and higher than group Ⅱ and Ⅳ by 6.26% (P>0.05)、3.69% (P>0.05), respectively.The average daily gain of group Ⅲ was highest, and higher than group Ⅱ and Ⅳ by 26.32% (P<0.01)、5.74% (P>0.05) respectively.②Comparing with group Ⅱ, the slaughter rate of group Ⅲ was increased by 4.68% (P>0.05).Compared with groupⅠ, Ⅱ and Ⅳ, the meat percentage of group Ⅲ was increased 18.46% (P<0.05), 10.97% (P>0.05) and 4.40% (P>0.05), while the net meat weight of carcass in group Ⅲ was increased by 49.74% (P<0.01), 13.22% (P>0.05) and 18.27% (P<0.05), respectively.Compared with groupⅠ, Ⅱ and Ⅳ, the net meat rat of carcass in group Ⅲ was increased 10.42% (P<0.01)、6.00% (P>0.05) and 3.37% (P>0.05), respectively.③There was a rising trend as the order of groupⅠ, Ⅱ, Ⅳ and Ⅲ in serum glucose, Ca, P, HDL, LDL, GPT and IgG, while A/G and TG showed a decreasing trend.Based on the above results, in this trial, supplementing complex nutritional regulation additives had good effects on growth performance, slaughter performance and serum biochemical indexes of grazing sheep in cold season.And supplementing complex formulation group 1 (group Ⅲ) was the best.     

Effect of Different Dietary Concentrate to Forage Ratios on Growth Performance,Serum Biochemical Indexes and Economic Benefits of Dorper Sheep

Two experiments were conducted to investigate the effect of different dietary concentrate to forage ratios (C/F) on the growth performance,serum biochemical indexes and economic benefits of Dorper sheep.TestⅠ:40 weaned lambs with the 20 to 35 kg body weight were divided into 4 groups with 10 sheep in each group and provided 4 different C/F diets:group A (40:60),group B (50:50),group C (60:40),group D (70:30) and the experiment lasted for 70 d;TestⅡ:40 growing sheep with the 30 to 45 kg body weight were divided into 4 groups with 10 sheep in each group and provided 4 different C/F diets:group E (35:65),group F (45:55),group G (55:45),group H (65:35) and the experiment lasted for 70 d.The results showed as follows:In the testⅠ:①With the increase of C/F,the ADG of rams increased,but that of ewes was increased initially and then decreased,the ADG of group A in male and female were significantly lower than other three groups (P<0.05),and there were no significant differences in group B,C and D (P>0.05);ADFI of male and female were reduced significantly (P<0.05);F/G was decreased significantly of ram (P<0.05),while that of group B was significantly lower than the other three groups of ewe (P<0.05).②There were no significant differences of TP,TG and Glu in 4 groups (P>0.05),but C/F had different effects on other serum components.③The average net profit in group D of rams was 53.03% higher than group B,and 35.33% higher than group C,while that in group B of ewes was 61.76% higher than group C,and 54.49% higher than group D.In the testⅡ:①With the increasing of the C/F,the ADG of the growing rams was increased gradually,but group G of ewe was significantly higher than group E (P<0.05),and there were no significant differences in group F,G and H (P>0.05).ADFI of male and female was reduced significantly (P<0.05);F/G was decreased significantly of ram (P<0.05),while that of ewes was decreased initially and then increased,group G was significantly lower than the other three groups (P<0.05).②There were no significant differences in TP,TG and Glu in 4 groups (P>0.05),but C/F had different effects on other serum components.③The average net profit in group H of ram was 69.49% higher than group F and 52.13% higher than group G.While that in group G of ewe was 1 282.61% higher than group F.Under the conditions of this experiment,the appropriate C/F was 60:40 to weaned male lambs,while 50:50 to weaned female lambs,and the appropriate C/F was 50:50 if they were mixed fed.TestⅡ showed that the appropriate C/F was 55:45 to both male and female growing sheep.     

不同精粗比日粮对杜泊绵羊生长性能、血清生化指标及经济效益的影响

为探讨不同精粗比日粮对不同生理阶段杜泊绵羊生长性能、血清生化指标及经济效益的影响,本研究进行了2个试验。试验Ⅰ:选用体重20~35 kg断奶杜泊羔羊40只(公、母各半),随机分成4组,每组10只,分别饲喂精粗比为40:60 (A组)、50:50 (B组)、60:40 (C组)、70:30 (D组)的日粮,试验期70 d;试验Ⅱ:选用体重30~45 kg生长期杜泊羊40只(公、母各半),随机分成4组,每组10只,分别饲喂精粗比为35:65 (E组)、45:55 (F组)、55:45 (G组)、65:35 (H组)的日粮,试验期70 d。结果显示,试验Ⅰ:①随日粮精料比的增加,断奶杜泊公羊的平均日增重呈现增加趋势,而母羊为先增加后降低,总体A组显著低于其他3组(P<0.05),B、C、D组间差异均不显著(P>0.05);随日粮精粗比的增加,各组平均日采食量逐渐降低且差异显著(P<0.05),各组公羊料重比显著降低(P<0.05),而B组母羊料重比显著低于其他3组(P<0.05)。②各组试验羊血清中总蛋白、甘油三酯、血糖含量差异均不显著(P>0.05),而日粮精粗比对其他血清成分有不同的影响。③D组公羊平均日净利润比B、C组分别高53.02%、35.33%,B组母羊平均日净利润比C、D组分别高61.76%、54.49%。试验Ⅱ:①随日粮精料比的增加,生长期杜泊绵羊平均日增重基本呈现显著增加趋势(P<0.05),而G组母羊平均日增重最高且显著高于E组(P<0.05),F、G、H组间差异不显著(P>0.05)。随日粮精粗比的增加,各组平均日采食量逐渐降低(P<0.05),公羊的料重比逐渐降低(P<0.05),而母羊料重比呈现先降低后增加趋势,G组显著低于其他3组(P<0.05)。②日粮精粗比对各组试验羊血清中总蛋白、甘油三酯、血糖含量影响差异均不显著(P>0.05),而对其他血清成分有不同的影响。③H组公羊平均日净利润比F、G组分别高69.49%、52.13%,G组母羊平均日净利润比F组高1 282.61%。综合各项指标分析,断奶杜泊公羔羊日粮精粗比以60:40较好,断奶杜泊母羔羊精粗比以50:50较好,断奶羔羊混群饲养,日粮精粗比为50:50较宜;生长期杜泊绵羊日粮精粗比均为55:45较适宜。     

不同颗粒日粮对滩羊育肥羊生长性能、养分表观消化率及血清生化指标的影响

旨在探究不同颗粒日粮对育肥羊生长性能、养分表观消化率及血清生化指标的影响.选取体重相近、(70±10)日龄的滩羊羯羔羊60只,随机分为4组:对照组(n=15)、试验Ⅰ组(n=15)、试验Ⅱ组(n=15)、试验Ⅲ组(n=15).对照组饲喂自配全混合日粮(40％自配精饲料+60％自配粗饲料),试验Ⅰ组饲喂50％自配全混合日...     

全混合颗粒料中添加不同类型蛋氨酸对湖羊生长性能及血清生化指标的影响

本试验旨在研究在湖羊全混合颗粒料中添加不同类型蛋氨酸(蛋氨酸钙盐与蛋氨酸羟基类似物异丙酯)对湖羊生长性能及血清生化指标、抗氧化指标和激素含量的影响.选取体重为(19.99±2.04)kg的健康湖羊72只,随机分为3组:对照组、试验Ⅰ组(在基础饲粮中添加1.5 kg/t蛋氨酸钙盐)和试验Ⅱ组(在基础饲粮中添加1.5 kg...     

苜蓿草粉对育肥猪生长性能、血清抗氧化及免疫性能相关指标的影响

【目的】该试验通过研究添加不同比例苜蓿草粉对育肥猪生长性能、血清生化指标、抗氧化性能以及免疫指标的影响,以探明育肥猪饲粮中苜蓿草粉的较优添加比例。【方法】选取健康、平均体重(75.5±1.03)kg的杜×长×大三元杂交猪120头,随机均分为4组,每组6个重复,1个重复1栏。分别在基础饲粮中添加0(对照组)、5%、10%、15%的苜蓿草粉进行饲喂试验,预试期7 d,正式期45 d。测定每头猪初始体重、终末体重及每栏日采食量;试验结束后,每栏随机抽取1头猪,通过前腔静脉采血10 mL,测定血清生化指标、抗氧化指标及免疫球蛋白含量。【结果】与对照组相比,各试验组平均日增重均显著降低(P<0.05),5%和10%苜蓿组料重比(F/G)无显著差异(P>0.05),而15%苜蓿组料重比显著提高(P<0.05);各试验组抗氧化物歧化酶(SOD)活性均显著提高(P<0.05);5%苜蓿组甘油三酯(TG)含量显著提高(P<0.05),丙二醛(MDA)含量显著降低(P<0.05);10%苜蓿组总抗氧化能力(T-AOC)和过氧化氢酶(CAT)活性均显著提高(P<0....