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中草药饲料添加剂饲喂肉牛试验 总被引:7,自引:0,他引:7
<正> 目前,抗生素、激素类饲料添加剂在养牛业中的应用,其副作用和残留的影响已被人们所重视。从植物中寻找安全有效的饲料添加剂已成为国内外学者研究的课题之一。为此,我们研制了一种肉牛用中草药饲料添加剂,并于1993年2月~4月应用该品在辽宁省开原市三家子乡畜牧场进行育肥牛饲养试验,现将结果介绍如下。1.材料和方法1.1 中草药饲料添加剂根据各类中草药的药理作用,综合考虑其消化、补气、养血、滋阴、驱虫、清热等方面的功能选用当归、苍术、麦芽等10余种中草药 相似文献
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现代化社会经济持续发展,人民生活水平持续提高,对农业养殖生产和食品安全有了更高的要求。人们对化学抗生药物饲料添加剂的不良作用日益了解,并且在肉牛养殖中出现了较多的问题,如饲料资源浪费、环境污染、疾病发生率高等。中草药饲料添加剂为一种新型饲料添加剂,因其自身具有安全无公害、价格低廉等优势得到越来越多的重视,并逐步替代化学制剂和抗生药物等作为饲料添加剂,在肉牛养殖中,使用中草药饲料添加剂能够有效提高肉牛养殖的生产性能,增强其机体免疫力,提高喂养饲料转化率,进而增加肉牛养殖的经济效益,改善畜产品质量。基于此,探讨中草药饲料添加剂在肉牛养殖中的具有应用。 相似文献
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为了研究中草药饲料添加荆对肉牛的增重效果,选用310 kg左右健康无疾病的杂交肉牛60头,随机分为7组,每组10头.1组为对照组,2~4组为试验一组,分别饲喂含1%、1.5%和2%的自拟一号中草药添加剂饲粮,5~7组为试验二组,分别饲喂含1%、1.5%和2%自拟二号中草药添加剂饲粮,进行了为期60 d的育肥试验,所有试验牛的基础日粮相同.测定分析了试牛初重、末重和日增重.结果试验组的平均增重和平均日增重显著高于对照组(P<0.05),表明使用中草药添加荆可以提高肉牛的日增重. 相似文献
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中草药复方添加剂对高温环境下肉牛体温和腹泻率的影响 总被引:1,自引:0,他引:1
为研究中草药复方添加剂对夏季高温高湿条件下肉牛体温和腹泻率的影响。试验选择8月龄,210 kg左右的锦江黄牛27头,分为高温对照组(对照组)、中草药复方添加剂1组(中草药1组)和中草药复方添加剂2组(中草药2组)三个处理,每组3个重复,每个重复3头牛。试验期为60 d,分三个阶段,每个阶段20 d。试验期间在每天早、中、晚观察记录温湿度表所测得的肉牛栏舍内温度和湿度,观测实验牛的体温变化及健康状况。结果表明:(1)随着热应激时间的延长,试验牛体温呈现下降趋势,在第60天时趋于正常;与对照组相比,中草药1组肉牛的体温有下降趋势,但无显著差异;中草药2组试验牛的体温在第21天和第41天显著低于对照组。(2)与对照组相比,试验1~20 d,中草药1组的腹泻指数无显著影响,中草药2组显著降低;试验21~40 d和41~60 d,中草药1组的腹泻指数分别较对照组降低63.6%和74.8%;中草药2组分别较对照组下降81.0%和87.7%。由此可见,添加两种中草药复方后可有效缓解夏季肉牛热应激反应,中草药复方2效果优于中草药复方1。 相似文献
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为了提升河西肉牛产品特别是血液制品的质量及产业效益,利用饲料中添加中草药添加剂的方法对河西肉牛架子牛进行了育肥、屠宰试验。采取低剂量中草药组、高剂量中草药组和对照组肉牛血样,用专门仪器和方法测定了血液中5种血清矿物质离子、7种血清代谢产物及5种血清酶等生化指标的含量。结果表明:高剂量中草药组肉牛血清中的Na、Mg离子及乳酸脱氢酶含量均极显著高于低剂量组和对照组(P<0.01),Cl离子含量极显著高于对照组(P<0.01),其葡萄糖、肌酐、甘油三酯含量均显著高于对照组(P<0.05),谷丙转氨酶显著低于其他两组肉牛(P<0.05),而谷草转氨酶(AST)却显著高于其他两组肉牛(P<0.05);低剂量组和高剂量组肉牛血清中的高密度脂蛋白极显著高于对照组(P<0.01),碱性磷酸酶极显著低于对照组肉牛(P<0.01),而谷丙/谷酸则显著高于对照组肉牛(P<0.05)。结论:试验配制的中草药饲料添加剂对肉牛血液生化指标有良好的影响,对高剂量组肉牛的影响更为明显;饲喂中草药饲料添加剂的肉牛生长发育、营养状况均显著好于对照组,但高剂量组更优;利用高剂量中草药饲料添加剂饲喂的肉牛,其血液在制造保健用品方面有广阔开发前景。 相似文献
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随着肉牛养殖业的不断发展,提高肉牛饲养效益和产品质量已成为一个重要的研究方向。中草药为一种天然的饲料添加剂,具有保健、调节免疫力、促进生长等特点。适当添加中草药添加剂可以促进肉牛生长发育、提高营养物质的消化利用率、增强免疫力和抗氧化能力,并且对肉牛消化道微生态也有积极影响。主要对中草药添加剂对肉牛生长发育、营养物质消化率的影响进行综合分析,以期为肉牛饲养业的发展提供参考。 相似文献
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试验旨在研究中草药添加剂对牛瘤胃发酵的影响,选取4头西门塔尔肉牛,随机分成2组,每组2头,试验组添加中草药添加剂200g/d,试验期40d。试验结果表明:中草药添加剂能显著改善牛瘤胃的内环境;瘤胃菌群数量增加,NH3-N浓度显著降低(P<0.05);MCP浓度显著升高(P<0.05),蛋白质利用率提高。 相似文献
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课题研究在瘦肉型仔猪饲粮中使用高效、无毒、无残留的中草药添加剂,替代或减少高剂量抗生素和常规促生长剂的使用,以扭转目前在仔猪饲养过程中产生的致病菌耐药性增强、药物残留和污染环境,造成对人类健康和环境影响的后患。课题组对所研制的“瘦肉型仔猪中草药添加剂”进行了饲养效果对比试验,现报道如下。1材料与方法1.1试验材料试验用中草药添加剂,由宜春学院“瘦肉型猪中草药添加剂研究”课题组成员研制,从绞股蓝、苍术、黄芪、花粉等多种中草药中提取;试验用基础饲料,由课题组成员采购和加工配制;试验仔猪,由江西省樟树市吴城农牧场提… 相似文献
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不同制剂中草药添加剂对猪胴体特性和猪肉品质的影响 总被引:8,自引:0,他引:8
自20世纪80年代以来,大量研究报道,中草药饲料添加剂可提高猪日增重。而当今人们不仅关心能产出多,更关心其能否提高畜产品的品质,改善产品风味,生产出优质、安全的绿色动物食品。目前针对这方面的研究报道甚少,此次试验在中草药饲料添加剂提高生产性能研究的基础上,采用不同生产工艺生产中草药添口剂,研究其对猪生长性能和猪肉品质的影响。为开发“优质、安全、高效”的中草药多功能饲料添加剂提供科学依据。 相似文献
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奶牛中草药饲料添加剂的应用研究 总被引:5,自引:0,他引:5
胡美华 《兽药与饲料添加剂》2002,7(5):31-33
近年来,随着对中草药的免疫功能、药理学、药代动力学的研究,世界各国掀起了研究应用中草药饲料添加剂的热潮。中草药源于食物,取自于自然界的动物、植物和矿物等,是动物体最易接纳的纯天然物质。中草药饲料添加剂种类繁多,且涉及多种动物,本文就中草药饲料添加剂在奶牛等反刍动物中的应用研究作一综述。1中草药饲料添加剂在奶牛业中的应用中草药饲料添加剂具有许多独特优势,在奶牛业生产中的应用研究越来越受到有关专家和学者的重视。据报道,在奶牛泌乳早期应用中草药饲料添加剂可明显提高奶牛的产奶量,改善乳汁成分犤1,2犦。… 相似文献
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魏静 《四川畜牧兽医学院学报》2009,(4):28-32
在现代法律秩序中,商会自治规范是制定法的基础和必要的补充,甚至在某些方面替代了制定法;商会自治规范主要包括商会组织规范、行为规范、惩罚规范以及争端解决规范等;其效力仅及于其内部成员;商会自治规范和制定法之间存在冲突,但也存在整合的基础。 相似文献
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本文概述了猪的毛色类型、猪的毛色遗传模式,着重综述了猪毛色基因分子基础的研究进展,指出存在问题并就未来发展方向做了思考。 相似文献
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REASONS FOR PERFORMING STUDY: Centesis of the bicipital bursa using an 8.9 cm long spinal needle has been reported but the alternative of employing a 3.8 cm long hypodermic needle requires validation. OBJECTIVE: To compare the efficacy of 2 different methods of centesis of the bicipital bursa and to evaluate the usefulness of ultrasonographic imaging to determine the location of solution administered when centesis of the bursa is attempted. METHODS: For Trial 1, 6 clinicians, who had no previous experience of centesis of the bicipital bursa, attempted to inject a solution composed of an aqueous radiopaque contrast medium and physiological saline solution (PSS) into the bicipital bursae of 2/12 horses using the previously described distal approach to inject one bursa and a proximal approach to inject the contralateral bursa. The bicipital tendon and bursa were examined ultrasonographically before and after injection; and both shoulders were examined radiographically to identify the location of the medium. In Trial 2, another 6 clinicians, also with no previous experience of centesis, repeated Trial 1, using 6 horses, but the radiopaque contrast medium was mixed with air instead of PSS. RESULTS: Accuracy of centesis using the proximal approach was 39% and that of the distal approach 28%. Ultrasonographic examination of the shoulder allowed the location of solution and air to be accurately predicted in all 12 shoulders examined. CONCLUSIONS: Clinicians who have had no previous experience performing centesis of the bicipital bursa are unlikely to be successful in centesis using either approach. Radiographic examination after injecting a radiopaque contrast medium may be necessary to assess the success of centesis especially if bursal fluid is not obtained during centesis. Injecting air along with the radiopaque contrast medium provides more accurate ultrasonographic confirmation of centesis and better radiographic definition than does injection without air. 相似文献
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以国际标准强毒R株人工感染非免疫产蛋鸡,定时扑杀,分别从鼻窦、眶下孔、气管、肺、气囊、卵巢和输卵管分离MG,并收集感染鸡所产蛋分离MG。结果表明,人工感染48小时后上、下呼吸道及肺已被全面感染,96小时气囊已被感染,120小时输卵管已能分离到MG,卵巢始终分离不到MG。人工感染鸡自144小时便能在其所产蛋中分离出MG。药物治疗能在72小时内消除感染,油乳剂苗则需24天后逐渐降低蛋内MG分离率,药物卵内注射、种蛋药浴、高温处理均能杀死卵内MG,但以研制的种蛋浸泡剂药浴效果为最好。 相似文献
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Effects of size of ingestively masticated fragments of plant tissues on kinetics of digestion of NDF
Ingestively masticated fragments were collected and sized via sieving. Different sizes of esophageal masticate and ruminal digesta fragments, and ground fragments of larger masticated pieces were incubated in vitro, and undigested NDF remaining at intervals of up to 168 h of incubation was determined. The ruminal age-dependent time delay (tau) for onset of digestion of NDF was positively correlated (P < 0.004) with the mean sieve aperture estimated to retain 50% of the fragments between successive sieve apertures (MRA). Degradation rate of potentially degradable NDF (PDF) and level of indigestible NDF were not related (P > 0.10) to MRA of masticated and ground fragments. Estimates of tau were positively related to MRA, with slopes of bermudagrass < corn silage < ruminal fragments of corn silage. It was concluded that fragment size-, and consequently, ruminal age-dependent onset of PDF degradation of a mixture of different fragment sizes results in an age-dependent rate of degradation of the more rapidly degrading of two subentities of PDF. Models are proposed that assume a tau before onset of simultaneous degradation of PDF from two pools characterized as having gamma-modeled age-dependency and age-constant rates. The ruminal age-dependent pool seems to be associated with the faster-degrading pool, and its rate parameter increases with range in MRA in the population of fragments. Conceptually, the ruminal age-dependent rate parameter for PDF degradation seems to represent a composite of several effects: 1) effects of the size-dependent tau; 2) range in MRA of the population of ingestively masticated fragments; and 3) subentities of PDF that degrade via more rapid age-dependent rates compared with subentities of PDF that degrade via age-constant rates. The estimated fractional rates of ruminative comminution of ingestively masticated fragments (0.060 to 0.075/h) were of a magnitude similar to the mean fractional rates of PDF digestion (0.030 to 0.085/h), which implies that ruminative comminution may be first-limiting to fractional rate of PDF digestion. The in vivo roles of ingestive and ruminative mastication of fragments on PDF degradation must be considered in any kinetic system for estimating PDF digestion in the rumen. These results and others in the literature suggest that the rate of surface area exposure rather than intrinsic chemical attributes of PDF may be first-limiting to degradation rate of PDF in vivo. 相似文献