Effects of Chinese Herbal Medicine Feed Additives on Growth Performance and Dietary Nutrient Metabolism of Black-bone Chickens

[Objectives]To study the effects of Chinese herbal medicine feed additives on the growth performance and dietary nutrient metabolic rate of black-one chickens.[Methods]480 pieces of 1-day-old Donglan Black-bone Chickens were selected and divided into 4 groups,with 6 replicates in each group,with 20 pieces in each replicate.Among them,group A was the control group and was fed the basal diet;the groups B,C,and D were the experimental groups,which were separately supplemented with 0.25%,0.50%and 1.00%of Chinese herbal medicine additives in the basal diet,and the experimental period was 70 d.At the end of the feeding experiment,24 experimental chickens with similar body weight were selected from each group,and the same design of the feeding experiment was used to continue to feed the original diet for the metabolic experiment to determine the nutrient metabolic rate.[Results]Except the 50-70 d stage,the average daily gain(ADG)of group B in other stages was increased by 5.00%-9.15%(P<0.05),and the average body weight of group B at 70 d was also increased by 4.86%(P<0.05);the ADG of group C at 36-49,1-49 and 1-70 d and the average individual weight at 70 d were also higher than that of group A by 5.90%,2.66%,2.68%and 2.57%,respectively(P>0.05);at 36-49 d,the average daily feed intake(ADFI)of group A was higher than that of group B by 6.04%(P<0.01),and was also higher than that of groups C and D by 5.12%and 4.13%(P<0.05),respectively;at 1-49 d,the ADFI of group A was higher than that of group C by 2.86%(P<0.05),and there was no significant difference between the four groups of experimental chickens at each stage(P>0.05);at 22-35 and 1-70 d,the feed to gain ratio(F/G)of group B was 6.32%and 3.41%lower than that of group A(P<0.05),and at 36-49 and 1-49 d,the F/G of group B was even lower;at 36-49 d,the F/G of group C was 10.15%lower than that of group A(P<0.05),and at 1-49 d,it was also lower than that of group A by 5.29%(P<0.01);there was no significant difference between the two groups at other stages.In terms of nutrient metabolism:the three different amounts of this additive have increased the metabolic rate of DM,CP,CF,NFE,CA,Ca,P,TE and other nutrients in the diet to varying degrees,especially the addition of 0.25%and 0.50%had the significant increase.[Conclusions]The addition of 0.25%Chinese herbal medicine additives in the diet can significantly improve the growth performance and main nutrient metabolic rate of Donglan Black-bone Chickens.

Effects of Nano Chinese Herbal Medicine Feed Additive on Growth Performance,Meat Quality and Disease Resistance of Chickens

[Objectives]To explore the effects of nano compound Chinese herbal medicine feed additive on growth performance,meat quality and disease resistance of chickens.[Methods]Chickens were fed with nano compound Chinese herbal medicine feed additive developed by Hunan Polytechnic of Environment and Biology,including 120 chickens in the treatment group and 120 chickens in the control group(CK).The growth performance indices(body weight gain,feed to gain ratio and slaughter index),meat quality indices(pH value,color,drip loss,shear force)and disease resistance indices(morbidity and mortality)of the chickens in the treatment and CK groups were recorded and determined,respectively.[Results]The inclusion of 2%nano compound Chinese herbal medicine feed additive in the diet significantly increased the growth rate,reduced the feed-to-gain ratio and improved the meat quality of the chickens.Supplementing Chinese herbal medicine could increase the pH value and reduce the drip loss and shear force of chicken meat.At the same time,the body's immune function,antioxidant level and resistance against diseases of the chickens fed with nano compound Chinese herbal medicine feed additive were improved.[Conclusions]The inclusion of nano compound Chinese herbal medicine feed additive in the diet can improve the growth performance,meat quality and disease resistance of chickens.

Effects of Chinese Herbal Medicine Additives on Growth,Immunity and Antioxidation of Chickens

Chinese herbal medicine additives can not only directly improve the growth performance of chickens,but also indirectly affect the growth of chickens by enhancing the antioxidant capacity,immunity and disease resistance of the body,and eliminating diseases and adverse factors,thereby improving the growth performance of chickens.In the context of the current national prohibition of adding antibiotics to feed,the research and application of Chinese herbal medicine additives are of practical significance to eliminate the long-term use of antibiotics as chicken feed additives and reduce the threat to the environment and human health.For this reason,the research related to the substitution of Chinese herbal medicine for antibiotics is made a brief introduction to provide a reference in research and production practice.

Research Progress of Chinese Herbal Medicine Additives in Layer Breeding

Chinese herbal medicine have dual effects of medicinal value and nutrition regulation. In recent years, antibiotics have been widely forbidden in live- stock production, which are inevitably replaced by natural Chinese herbal medicine in livestock breeding. A brief summary of current research progress of Chinese herbal medicine in layer breeding is given in the paper.

Effect of Chinese Herbal Feed Additive on Meat Quality of Rex Rabbit

[ Objective] The aim of this study was to provide a theoretical basis for population and application of Chinese herbal feed additive in the rex rabbit breeding. [ Methyl] 108 weaned -rex rabbits aged 40 days were divided into three groups with thirty -six each group. Group A were fed basal diet, while group B were fed basal diet supplemented with 0.3% Chinese herbal feed additive and group C were fed basal diet supplemented with 0.4% Chinese herbal feed additive. The meat quality indexes were measured when feeding to 150 age in days. [ Result] There was significant difference among pH value, water loss rate, storing loss rate and crude protein content in each group （P〈0.05）, but no significant difference was found in tenderness, cooking percentage, moisture content and crude fat content （ P 〉 0.05）. The total content of ami- no acids, essential amino acids and semi essential amino acids as well as main delicious amino acids was highest in group C accounting for 23.84%, 11.47% and 8.32% respectively, next came group B accounting for 20.94%, 10.64% and 6.81% respectively, and lowest in group C （ control group） accounting for 19.06%, 9.61% and 6.46% respectively. [ Conclusion] The Chinese herbal feed additive can improve meat quality of rex rabbit the best addition of 0.4%.

Therapeutic potential of natural compounds from Chinese medicine in acute and subacute phases of ischemic stroke

Stroke is one of the leading causes of death and disability in adults worldwide,resulting in huge social and financial burdens.Extracts from herbs,especially those used in Chinese medicine,have emerged as new pharmaceuticals for stroke treatment.Here we review the evidence from preclinical studies investigating neuroprotective properties of Chinese medicinal compounds through their application in acute and subacute phases of ischemic stroke,and highlight potential mechanisms underlying their therapeutic effects.It is noteworthy that many herbal compounds have been shown to target multiple mechanisms and in combinations may exert synergistic effects on signaling pathways,thereby attenuating multiple aspects of ischemic pathology.We conclude the paper with a general discussion of the prospects for novel natural compound-based regimens against stroke.

Effects of Diet with "Lianteng" Additive of Chinese Herbal Medicine on Blood Biochemical Indexes,Immune and Antioxidant Function of Guangxi Sanhuang Chickens

[Objectives]This trial was conducted to investigate the effects of diet with"Lianteng"additive of Chinese herbal medicine on blood biochemical indexes,immune and antioxidant function of Guangxi Sanhuang chickens.[Methods]480 Guangxi Sanhuang chickens at the age of 1 d were divided into 4 groups randomly and each group was assigned to 6 replicates with 20 chicks in each replicate;groups A,B and C were treatment groups and fed basal diets with 0.1%,0.2%and 0.4%of"Lianteng"additive of Chinese herbal medicine respectively during a trial of 70 d.Group D was control group and fed only basal diet.The serum samples were taken from 6 chicks in each group at the age of 21,35 and 49 d respectively and analyzed for biochemical,immune and antioxidant parameters in serum.[Results]Results from the trial showed that no difference was found in serum content of GLU,TG,TP,TC,and UN in the measurement at the age of 21,35 and 49 d(P>0.05);however,the content of ALB from groups A and B at 35 d was significantly higher than that from group D(P<0.01),and the ALB content from group B at 49 d was also higher than that from group D(P<0.05);the IgM content at 49 d from group A was lower than that from group D(P<0.05),in addition to this,there was no differences found in the contents of IgG,IgM and IFN-y among groups A,B,C and D during the trial(P>0.05);but the content of IL-2 from groups A and B at 49 d was significantly greater than that from group D(P<0.05);T-AOC from groups A,B and C at 49 d was very significantly higher than that from group D(P<0.01),and the one of group B at 35 d was still obviously higher than that of group D(P<0.05);also at 49 d,the GSH content in groups A and B was much greater than that in group D(P<0.01);T-SOD activity of group B and C at 35 d was distinctly greater than that of group D(P<0.05).[Conclusions]It can be concluded that the addition of 0.2%of"Lianteng"additive of Chinese herbal medicine in diet can increase immune function in a certain extent and promote the antioxidant ability observably for Guangxi Sanhuang chickens.

Research Status of Serum Pharmacology and Serum Pharmacochemistry of Traditional Chinese Medicine

Serum pharmacochemistry of traditional Chinese medicine has become a more accurate and rapidly developing reasonable way to analyze the effective material basis of traditional Chinese medicine in recent years. Through this method, we can select very complex Chinese medicine components and clarify the effective substances consistent with the main functions, and then separate and purify effective ingredients in traditional Chinese medicine, so as to explain the material basis of the drug effect and prove the rationality and principle of action of Chinese medicine compounds. It can show the multi-component and multi-target characteristic of traditional Chinese medicine, and after analyzing the migrating components of serum, we can explore the direct effective substances that act on the patient’s body, so as to accelerate and accurately complete the in-depth study of the effective substances of Chinese medicine.

Effects of Diet with"Lianhuang"Additive of Chinese Herb Medicine on Growth Performance and Metabolic Rates of Dietary Nutrients in Donglan Black Chicken

[Objectives]The study was conducted to evaluate the effects of diet with"Lianhuang"additive of Chinese herbal medicine(LACHM)on growth performance and metabolic rates of dietary nutrients in Donglan black chickens(DBCs).[Methods]80 DBCs aged 1 d were blocked into 4 groups randomly and assigned to 6 replicates in each group with 20 chicks in each replicate.Group A as control group fed basal diet.Groups B,C and D as treatment groups consumed the basal diet added with 0.25%,0.50%and 1.00%of LACHM,respectively during the test period of 70 d.In the end of feeding test,24 DBCs with similar body weight from each group were chosen out and used for a metabolism test to determine the metabolic rates of dietary nutrients from each treatment.The metabolism test was conducted as the same design as the feeding test and the DBCs from each group were fed the same diet as previous test.[Results]The ADG of chickens in the test increased by 5.00%-9.15%(P<0.05)except the stage of 50-70 d,and the individual average body weight(IABW)at 70 d in group B also increased by 4.86%(P<0.05).Compared with group A,the ADG of group C in the stages of 36-49,1-49 and 1-70 d and the IABW in the end of 70 d increased by 5.90%,2.66%,2.68%and 2.57%(P>0.05),respectively.The ADFI in the stage of 36-49 d from group A was 6.04%more than that from group B(P<0.01),and 5.12%and 4.13%more than those from groups C and D(P<0.05),respectively,and the ADFI of group A in the stage of 1-49 d was still 2.86%more than that from group C(P<0.05).However,no differences in ADFI were found in other stages in the test among the 4 groups(P>0.05).The F/G in the stages of 22-35 and 1-70 d from group B was 6.32%and 3.41%lower than those from group A(P<0.05),respectively,and even 11.43%and 7.31%lower in the stages of 36-49 and 1-49 d from group B than those from group A(P<0.01),respectively.The F/G of group C in the stage of 36-49 d was also 10.15%lower than that of group A(P<0.05),and still 5.29%lower than that from group A in 1-49 d(P<0.01),but no differences were found in other stages between the two groups(P>0.05).The metabolic rates of MD,CP,CF,NFE,CA,TE,Ca and P in the 3 treatment diets for group B,C and D all increased to some extent.Among them,the increasing extents of diets with 0.25%and 0.50%of LACHM for groups B and C were much greater.Therefore,the diet with 0.25%of LACHM could improve the growth performance and metabolic rates of dietary nutrients in DBCs significantly.[Conclusions]This study provides a theoretical reference for the effects of traditional Chinese medicine additives on the growth and metabolic rates of DBCs.

复方中草药制剂对林下绿壳蛋乌鸡产蛋性能、蛋品质和血清生化指标的影响

本研究旨在探究日粮中添加不同水平的复方中草药制剂对林下绿壳蛋乌鸡产蛋性能、蛋品质、血清生化指标的影响。选取520日龄健康、体质量接近的绿壳蛋乌鸡560羽,随机分成4组,分别为对照组和试验Ⅰ组、Ⅱ组、Ⅲ组。对照组饲喂基础日粮,试验Ⅰ组、Ⅱ组、Ⅲ组分别在基础日粮中添加0.5%、1.0%、1.5%的复方中草药制剂,试验期45 d。结果显示,日粮中添加不同水平的复方中草药制剂对林下绿壳蛋乌鸡的平均蛋重、平均产蛋率、绿壳蛋破损率有显著影响,其中Ⅱ组平均蛋重显著高于对照组(P<0.05),Ⅰ组、Ⅱ组平均产蛋率显著高于对照组(P<0.05),Ⅱ组绿壳蛋破损率显著低于对照组(P<0.05);日粮中添加不同水平的复方中草药制剂对绿壳蛋蛋黄相对重、蛋白高度、蛋黄水分含量、蛋黄指数及哈氏单位有显著影响,其中Ⅱ组绿壳蛋蛋黄相对重显著高于对照组(P<0.05),Ⅰ组、Ⅱ组、Ⅲ组绿壳蛋蛋白高度显著高于对照组(P<0.05),Ⅱ组、Ⅲ组绿壳蛋水分含量显著低于对照组和Ⅰ组(P<0.05),Ⅱ组绿壳蛋蛋黄指数显著高于对照组、Ⅰ组、Ⅲ组(P<0.05),Ⅱ组绿壳蛋哈氏单位显著高于对照组和Ⅲ组(P<0.05);日粮中添加不同水平的复方中草药制剂对林下绿壳蛋乌鸡的血清总蛋白(TP)、球蛋白(GLO)、丙氨酸氨基转移酶(ALT)、胆固醇(TC)和甘油三酯(TG)有显著影响,其中Ⅰ组、Ⅱ组血清TP含量显著高于对照组(P<0.05),Ⅰ组、Ⅱ组、Ⅲ组血清GLO含量显著高于对照组(P<0.05),Ⅲ组血清ALT活性显著高于对照组和Ⅰ组(P<0.05),Ⅱ组血清TC和TG含量显著高于对照组(P<0.05)。综上,日粮中添加不同水平的复方中草药制剂能改善绿壳蛋乌鸡的产蛋性能、蛋品质及血清生化指标,且以1.0%添加量的复方中草药制剂效果最佳。

菌酶协同发酵复方中草药对断奶仔猪生长性能及血清免疫、抗氧化和生长相关激素指标的影响

本试验旨在研究饲粮中添加菌酶协同发酵复方中草药对断奶仔猪生长性能及血清免疫、抗氧化和生长相关激素指标的影响,为复方中草药在断奶仔猪生产上的应用提供理论依据。试验采用单因素随机化设计,选用健康、体重相近的(28±2)日龄断奶仔猪160头,随机分为4个组,每组5个重复,每个重复8头猪(公母各占1/2)。对照组饲喂基础饲粮,试验组分别在基础饲粮中添加0.5%、1.0%、2.0%的菌酶协同发酵复方中草药。试验期为28 d。结果表明:1)与对照组相比,0.5%、1.0%和2.0%菌酶协同发酵复方中草药组的平均日增重显著升高(P<0.05),平均日采食量和料重比显著降低(P<0.05)。2)与对照组相比,0.5%、1.0%和2.0%菌酶协同发酵复方中草药组的血清免疫球蛋白A(IgA)和免疫球蛋白M(IgM)含量显著升高(P<0.05),血清白细胞介素-6(IL-6)含量显著降低(P<0.05);1.0%菌酶协同发酵复方中草药组的血清免疫球蛋白G(IgG)、白蛋白(ALB)和总蛋白(TP)含量显著升高(P<0.05),血清白细胞介素-1(IL-1)含量显著降低(P<0.05)。3)与对照组相比,1.0%和2.0%菌酶协同发酵复方中草药组的血清总抗氧化能力(T-AOC)、超氧化物歧化酶(SOD)活性和还原型谷胱甘肽(GSH)含量显著升高(P<0.05),1.0%菌酶协同发酵复方中草药组的血清丙二醛(MDA)含量显著降低(P<0.05)。4)与对照组相比,0.5%、1.0%和2.0%菌酶协同发酵复方中草药组的血清生长激素(GH)和胃泌素(GAS)含量显著升高(P<0.05),血清皮质醇(COR)含量显著降低(P<0.05);1.0%菌酶协同发酵复方中草药组的血清胰岛素生长因子-1(IGF-1)、三碘甲状腺原氨酸(T 3)和四碘甲状腺原氨酸(T 4)含量显著升高(P<0.05)。由此可见,饲粮中添加菌酶协同发酵复方中草药能够提高断奶仔猪生长性能,增强机体免疫功能和抗氧化能力,提高血清生长相关激素含量。本试验条件下,饲粮中菌酶协同发酵复方中草药适宜添加水平为1.0%。

我国甘蔗梢叶综合利用技术研究与应用

作为甘蔗糖业的大宗副产物,甘蔗梢叶产量大且营养活性成分丰富,是优质的可再生资源。然而我国甘蔗梢叶综合利用率低,且高附加值产品少,未能充分发挥其优质资源优势。因此,文章结合甘蔗梢叶营养与肥效等特性,概述我国目前主要开发及产业化应用的甘蔗梢叶综合利用技术,包括制备反刍动物饲料、作锅炉燃料、粉碎还田或与滤泥混合堆沤还田、制备甘蔗梢叶饮料及提取活性物质等工作原理、研究及应用现状,并分析存在的主要问题,如高营养价值饲料仍处于起步阶段,综合利用产值低;锅炉燃料化技术推广应用缺乏关键理论与技术支撑;粉碎还田可能会增加甘蔗病虫鼠害风险;甘蔗梢叶饮料规模化生产缺乏适宜清净方法;活性物质的提取率低等。同时介绍近年新兴的甘蔗梢叶综合利用技术,如作中药材、畜禽养殖发酵床垫料及生产水产动物饲料、制备活性炭及其功能材料等。认为未来我国甘蔗梢叶发展应结合我国糖业主要发展趋势和相关产业发展需求,重点完善甘蔗梢叶制备发酵蛋白饲料、高腐质化肥料、中药材、活性炭及功能材料、饮料,以及活性物质提取等综合利用技术的关键理论研究并实现技术升级,加快这些技术推广应用;同时强化甘蔗梢叶新的综合利用技术开发,开发甘蔗梢叶新的应用途径,为早日实现我国甘蔗梢叶高端化利用打下理论基础或提供技术支撑。

饲料添加中药抗病促生长与替抗应用研究

重点回顾兽用中药抗病促生长的历史背景,对兽用中药饲料添加应用经验进行总结,提出兽用中药“替抗”应以饲料添加为主要应用方向。对农业农村部饲料药物添加剂品种、《饲料原料目录》、卫生部门发布的“食药物质”目录进行全面梳理,提出“药饲同源”品种名单,研究提出科学遴选和应用兽用中药“替抗”品种原则建议,在现有兽药国家标准和注册标准品种基础上,通过与“药饲同源”品种比对分析,筛选出21种“替抗”兽用中药制剂,为兽用抗菌药使用减量化提供参考。

中草药饲料添加剂对动物多种性能的影响

中草药饲料添加剂作为天然安全、功能多样、来源广泛、绿色经济的新型替抗潜力产品,在畜牧行业中越来越受重视。本文简述了中草药饲料添加剂的种类、特点等研究概况,重点阐述了中草药饲料添加剂对动物机体生长、免疫、抗病、抗应激、繁殖、生产性能等多方面的积极影响,并指出当前存在有效成分不明和药理作用机制不清等问题,未来有待通过有效成分分离鉴定等手段进行综合深入研究,为中草药饲料添加剂的进一步开发、应用和推广提供参考。

中草药添加剂对断奶湖羊生长性能、血清抗氧化指标及免疫功能的影响

试验旨在研究不同剂量的中草药添加剂对湖羊生长性能、血清抗氧化指标及免疫功能的影响。选取48只2月龄健康状况良好、体重相近的断奶公羔湖羊,随机分成4组,每组设4个重复。对照组饲喂基础饲粮,试验Ⅰ组、Ⅱ组、Ⅲ组分别在基础饲粮中添加0.010、0.025、0.050 g/kg的中草药添加剂。预试期7 d,正式试验期90 d。结果表明,61~90 d,试验Ⅱ组湖羊平均日增重比对照组增加了22.22%(P<0.05),料重比降低了18.85%(P<0.01)。第30 d,与对照组相比,试验Ⅱ组总蛋白(TP)、干扰素-γ (IFN-γ)含量显著升高(P<0.05)。与试验Ⅲ组相比,试验Ⅱ组免疫球蛋白G (IgG)、白细胞介素4 (IL-4)、白细胞介素6 (IL-6)、肿瘤坏死因子-α(TNF-α)、IFN-γ含量显著或极显著升高(P<0.05或P<0.01)。第60 d,试验Ⅱ组还原型谷胱甘肽(GSH)含量极显著高于对照组及试验Ⅲ组(P<0.01)。与对照组和试验Ⅲ组相比,试验Ⅱ组免疫球蛋白A (IgA)、IgG、IL-4、IFN-γ含量极显著升高(P<0.01),试验Ⅱ组IL-6含量显著高于试验Ⅲ组(P<0.05),IgA、IL-4含量显著或极显著高于试验Ⅰ组(P<0.05或P<0.01)。第90 d,试验Ⅱ组IgA含量极显著高于对照组(P<0.01),免疫球蛋白M(IgM)、IFN-γ含量显著高于试验Ⅲ组(P<0.05)。研究表明,中草药添加剂能够促进湖羊的生长,增强动物机体的抗氧化能力和免疫力,中草药添加剂的适宜添加量为0.025 g/kg。

复方中草药饲料添加剂在水产养殖中的应用

中草药具有营养物质含量和生物活性成分丰富、药物残留少、天然无污染、对水环境友好等优势,因此成为水产养殖行业的新型绿色饲料添加剂。中草药及其复方添加剂的应用可以增加水产动物的生长发育速度、饲料利用率和消化吸收能力,增强水产动物抗病、抗菌、抗应激的能力,改善肌肉风味和营养价值。文章综述了中草药活性成分和营养物质的理化性质与生物学功能,展现了复方中草药添加剂在鱼类、虾类、蟹类等水产动物养殖中的生物学特性,为复方中草药添加剂的研发及其在水产养殖中的进一步应用提供参考。

中草药饲料添加剂在肉牛养殖中的应用

随着畜牧业规模化和产业化的发展、全面禁抗时代的到来,肉牛行业对天然安全饲料添加剂的需求与日俱增,研究开发绿色、安全、无公害的替抗产品是肉牛养殖业发展的必然趋势。我国天然中草药资源丰富,且富含多种营养物质,被广泛应用于肉牛养殖行业中。中草药饲料添加剂具有多重功能,药用机理复杂。它能治病消炎杀菌、调节肠道菌群平衡、促进营养吸收和新陈代谢,提高动物生产性能和免疫机能、饲料消化率和畜产品品质。文章对中草药添加剂活性物质、生物功能以及在肉牛养殖方面的应用进行了综述,旨在为中草药添加剂的广泛应用及肉牛健康养殖提供参考。

复方中草药添加剂对泌乳奶牛生产性能、乳品质及血清免疫指标的影响

试验旨在研究复方中草药添加剂对泌乳奶牛生产性能、乳品质及血清免疫指标的影响。选取24月龄中国荷斯坦奶牛60头,随机分为4组,每组设置3个重复,每个重复5头牛。对照组饲喂基础饲粮,3个试验组分别饲喂在基础饲粮中添加100、200、400 g/d复方中草药添加剂的饲粮,试验期30 d。结果表明:与对照组相比,饲粮中添加200 g/d和400 g/d复方中草药添加剂可以显著提高泌乳奶牛平均日产奶量(P<0.05),显著降低泌乳奶牛料奶比(P<0.05);饲粮中添加200 g/d和400 g/d复方中草药添加剂可以显著提高泌乳奶牛乳蛋白水平(P<0.05),显著降低牛奶中体细胞数(P<0.05);饲粮中添加200 g/d和400 g/d复方中草药添加剂可以显著提高泌乳奶牛血清中免疫球蛋白A(IgA)、免疫球蛋白G(IgG)和白细胞介素-2(IL-2)含量(P<0.05),显著降低泌乳奶牛血清中白细胞介素-1β(IL-1β)含量(P<0.05)。综上所述,泌乳奶牛饲粮中添加复方中草药添加剂可以提高奶牛生产性能,改善奶牛乳品质及机体免疫功能,综合考虑经济成本,复方中草药添加剂的推荐剂量为200 g/d。

黄芪及其配伍中草药饲料添加剂研究进展

黄芪是最常用的大宗中药材之一,是近代畜禽养殖广泛应用的免疫增效剂,同时具有抗氧化、抗肿瘤、抗应激等作用,在饲料添加剂中具有广阔的应用前景。本文综述了基于黄芪及其配伍的中草药饲料添加剂在畜牧业、养殖业中的应用研究,以便为其在饲料添加剂中的开发、推广提供参考。

3种中草药水提物及其复配剂的体外抑菌效果研究

为了研究黄芪、甘草和苦豆子3种草药提取物及其复配剂的抑菌效果,试验采用水提法分别制备单剂中草药的提取液,按照L9(3^(4))正交试验设计得到9种不同复配剂,以大肠杆菌、金黄色葡萄球菌和沙门氏菌作为供试菌进行体外抑菌试验。结果显示,黄芪、甘草和苦豆子单剂对大肠杆菌、金黄色葡萄球菌和沙门氏菌均具有一定的抑菌效果,3种不同单剂提取物中,黄芪提取物对3种菌的抑菌效果最优,甘草、苦豆子次之。与单剂相比,3种中草药复配剂整体的抑菌效果均有提升,对大肠杆菌、金黄色葡萄球菌和沙门氏菌抑菌效果的最佳配比分别为1∶1∶2、2∶2∶1和4∶1∶2。经验证,3种中草药复配剂配比为1∶1∶2时,综合抑菌效果最佳,该复配剂作用大肠杆菌、金黄色葡萄球菌和沙门氏菌的抑菌圈直径分别为15.20、14.10、12.92mm。研究表明,在畜牧生产中,建议黄芪、甘草和苦豆子水提液的复配添加比为1∶1∶2,浓度为0.6、0.6、1.2 g/mL,从而最大限度地发挥中草药的抑菌作用。