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中药饲料添加剂对长金猪生长性能和饲料养分消化率的影响 总被引：9，自引：0，他引：9
选取 72头长金猪 ,随机分成 3组 ,对照组饲喂基础日粮 ,金霉素组饲喂含 6 0mg/kg金霉素的日粮 ,中药组饲喂含 0 .5 %中药添加剂的日粮 ,进行饲养对比试验和消化试验。结果显示 :中药组和金霉素组的末重、日增重和日采食量分别比对照组提高了 8.79%,18.70 %,5 .0 3%和 9.34%,19.0 2 %,6 .6 0 %(P <0 .0 1) ,而每增重 1kg分别减少耗料 310g ,2 70g ,两组粗蛋白、粗纤维、粗脂肪的表观消化率分别比对照组提高了 4 .4 3%,10 .2 7%,5 .36 %和4 .6 5 %,8.82 %,4 .86 %(P <0 .0 5 ) ,结果还显示中药添加剂促生长和提高饲料养分消化率与金霉素接近 (P >0 .0 5 ) ,经济效益均显著 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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绿色添加剂不同添加水平对育成牛增重效果的影响 总被引：1，自引：0，他引：1
试验选择 2 4头平均体重为 35 6kg± 5 4kg的育成牛 ,按单因子随机试验设计分为A、B、C三组 ,每组 8头 ,A、B组为试验组 ,C组为对照组进行试验。A组饲喂精料 +0 5 %酵母培养物 +0 0 5 %寡糖 ;B组饲喂精料 +0 4 %酵母培养物 +0 0 8%寡糖 ;C组饲喂精料。各组精料完全相同且精料中不添加任何抗生素或药物添加剂。结果表明 ,A、B组日增重平均较C组分别提高 16 9%和13 7% ,差异显著 (P <0 0 5 ) ;料重比A、B组平均较C组分别降低 14 7%和 12 1% ,差异显著 (P <0 0 5 ) ;试验期A、B组较C组头均每日增加纯收入 1 12元和 0 83元 ,收益率分别为 1∶3 2和 1∶2 4。 相似文献
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中药添加剂对海南文昌鸡消化酶活性的影响 总被引：1，自引：1，他引：0
试验旨在研究中药添加剂对海南文昌鸡消化酶活性的影响。将180只雌性文昌鸡随机分为5组,每组3个重复,每个重复12只鸡。第1组为空白对照组,饲喂基础日粮;第2组为抗生素对照组,在基础日粮中添加600 mg/kg的金霉素;第3、4、5组分别在基础日粮中添加0.1%、0.2%和0.3%的中药添加剂。试验共进行6周。每周称重、计量采食量。第35、56日龄时,每组分别取接近平均体重鸡6只,屠宰后迅速取胰腺和十二指肠内容物速冻,然后制备匀浆以测定胰腺蛋白酶活性和十二指肠内容物淀粉酶活性。结果显示,0.2%中药添加剂能显著提高日增重(P<0.05),0.2%的中药添加剂能够提高胰蛋白酶活力,但差异不显著(P>0.05),0.2%和0.3%的中药添加剂均能够显著提高肠道内容物中淀粉酶活力(P<0.05)。因此,中药添加剂能够提高文昌鸡胰蛋白酶和肠道淀粉酶活力,以0.2%的添加量较适宜。 相似文献
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为研究中草药饲料添加剂"连藤"对鸵鸟生长性能和抗病力的影响,选用164只鸵鸟随机分为对照组和实验组(A、B、C组),分别饲喂基础饲粮和含有0.1%、0.2%、0.4%"连藤"添加剂的饲料。于试验开始前、第7、14、21、28、35日对各组鸵鸟称重共6次,每天记录各组动物采食量及健康状况。结果表明,试验组鸵鸟增重高于对照组,饲料报酬数值极显著低于对照组(p0.01),其中以添加0.2%"连藤"添加剂效果最好,平均日增重和总增重较对照组提高了11.9%和12.4%,阶段增重最多并呈逐步上升趋势;总饲料报酬数值较对照组降低了4.4%,死亡率最低。本试验表明,饲粮中添加"连藤"添加剂能显著促进鸵鸟的生长发育、提高增重、降低料重比和死亡率,以添加0.2%"连藤"效果最佳。 相似文献
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选取150头杜×长×大三元杂交育肥猪,将其分为试验1(对照组)、2、3、4组和试验5组,每组30头猪。用基础饲粮(猪场现行饲粮)饲喂对照组猪;在基础饲粮中添加蛋氨酸0.075%和0.15%后,分别饲喂试验2组和试验3组猪;在基础饲粮中添加苏氨酸0.1%和0.2%后,分别饲喂试验4组和试验5组猪。试验结果:(1)试验3组猪平均日增重较对照组提高11.76%(P0.05),试验2组猪平均日增重较对照组提高7.06%(P0.05),试验4、5组猪平均日增重分别较对照组提高3.53%(P0.05)、4.71%(P0.05);试验3组猪每千克增重的饲料成本(8.45元/kg)最低,试验4、2、5组猪每千克增重的饲料成本(8.46、8.76元/kg和8.88元/kg)依次提高,对照组猪每千克增重的饲料成本(9.09元/kg)最高。(2)试验2、3组猪血清总蛋白质含量高于对照组(P0.05),试验3、4、5组猪血清甘油三酯含量都低于试验1、2组(P0.01),试验2、3组猪血清Ig G含量都高于对照组(P0.05),试验3组猪血清GOT活性低于对照组和试验2组(P0.05)。基于上述结果推断:在育肥猪基础饲粮(蛋氨酸含量为0.18%)中添加0.15%的蛋氨酸含量(即总含量为0.33%)较宜;添加适量(0.1%)的苏氨酸,能促进其生长,降低猪增重的饲料成本。 相似文献
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中药饲料添加剂对断奶仔猪生长性能的影响 总被引：3，自引：1，他引：3
选用4 8头2 5日龄杜-长-大杂交断奶仔猪,按性别和体重随机分为三组。在基础日粮相同的条件下,其中两组分别添加抗生素、复方中药饲料添加剂,对照组饲喂基础日粮。断奶后饲养2 8天观察仔猪采食量、日增重、腹泻率等。结果:抗生素组和中药组仔猪日增量分别比对照组提高14 .14 % (P<0 .0 5 )、30 .5 7% (P<0 .0 1) ,而且中药组比抗生素组提高了14 .39% (P<0 .0 5 ) ;它料转化率则分别提高12 .5 %和19.71% ;抗生素组仔猪腹泻率比对照组降低4 2 .31% ,中药组则降低6 9.2 3%。试验说明该中药饲料添加剂能明显提高仔猪生产性能。 相似文献
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本试验旨在通过研究饲料中添加不同水平的酵母培养物对肉兔生长性能、屠宰性能、脏器指数和血液生化指标的影响,确定其适宜添加量。将192只断奶新西兰兔随机分为4个处理,每个处理6个重复,每个重复8只,分别饲喂含0 %、0.1 %、0.2 %和0.3 %酵母培养物的试验饲粮,试验期6周。结果表明:添加酵母培养物可显著降低肉兔腹泻率(P < 0.05);与对照组相比,添加0.2 %和0.3 %酵母培养物组日增重和血清葡萄糖浓度显著提高(P < 0.05),添加0.3%酵母培养物组肾脏指数显著降低(P < 0.05);添加酵母培养物对平均日采食量、料重比、屠宰性能、心脏指数、肝脏指数、胰脏指数和血清胆固醇、甘油三酯浓度均无显著影响(P > 0.05)。因此,肉兔饲料中酵母培养物的适宜添加量为0.3 %。 相似文献
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本研究旨在评价液体发酵饲料对断奶仔猪生长性能和血液生化指标的影响。选择21日龄断奶仔猪80头,按体重相近、性别一致原则随机分为2个处理组,每个处理5个重复,每个重复8头猪。分别饲喂两种试验日粮:对照组全程饲喂固体颗粒饲料,实验组前期饲喂液体发酵饲料,后期饲喂固体颗粒饲料,实验期11天。实验结果表明:与对照组相比,实验组仔猪平均日增重提高了27.12%,平均日采食量提高了22.08%(P0.05);实验组仔猪血液中的血清尿素氮、谷草转氨酶和谷丙转氨酶均显著降低(P0.05)。因此,液体发酵饲料能够有效提高断奶仔猪的生长性能,改善断奶仔猪的机体健康状况,是仔猪断奶初期的理想饲粮。 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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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
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乳酸杆菌作为益生菌广泛用于人和动物.本文综述了乳酸杆菌改善宿主健康的机制.乳酸杆菌可通过产生抗菌物质如乳酸、过氧化氢、细菌素,或者通过竞争营养或肠道黏附位点来抑制致病菌;通过诱导黏附素的分泌或阻止细胞凋亡而增强肠道的屏障功能,从而保护肠道.文章重点讨论了乳酸杆菌表面成分(表面蛋白、脂磷壁酸和肽聚糖)与肠道受体(C型凝集素受体、Toll样受体和Nod样受体),阐述了他们结合后启动免疫调节信号,调控肠道免疫功能以发挥改善健康作用的机制. 相似文献
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Billinghurst RC Brama PA van Weeren PR Knowlton MS McIlwraith CW 《American journal of veterinary research》2004,65(2):143-150
OBJECTIVE: To determine whether serum concentrations of biomarkers of skeletal metabolism can, in conjunction with radiographic evaluation, indicate severity of osteochondrosis in developing horses. ANIMALS: 43 Dutch Warmblood foals with varying severity of osteochondrosis. PROCEDURE: 24 foals were monitored for 5 months and 19 foals were monitored for 11 months. Monthly radiographs of femoropatellar-femorotibial and tibio-tarsal joints were graded for osteochondral abnormalities. Serial blood samples were assayed for 8 cartilage and bone biomarkers. At the end of the monitoring period, foals were examined for macroscopic osteochondrosis lesions. RESULTS: Temporal relationships were evident between certain serum biomarkers and osteochondrosis severity in foals during their first year. Biomarkers of collagen degradation (collagenase-generated neoepitopes of type-II collagen fragments, type-I and -II collagen fragments [COL2-3/4C(short)], and cross-linked telopeptide fragments of type-I collagen) and bone mineralization (osteocalcin) were positive indicators of osteochondrosis severity at 5 months of age. In foals with lesions at 11 months of age, osteochondrosis severity correlated negatively with COL2-3/4C(short) and osteocalcin and positively with C-propeptide of type-II procollagen (CPII), a collagen synthesis marker. Radiographic grading of osteochondrosis lesions significantly correlated with macroscopic osteochondrosis severity score at both ages and was strongest when combined with osteocalcin at 5 months and CPII at 11 months. CONCLUSIONS AND CLINICAL RELEVANCE: The ability of serum biomarkers to indicate osteochondrosis severity appears to depend on stage of disease and is strengthened with radiography. In older foals with more permanent lesions, osteochondrosis severity is significantly related to biomarker concentrations of decreased bone formation and increased cartilage synthesis. 相似文献