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在基础饲料中添加一种光合细菌复合制剂持续饲喂草鱼30 d和60 d,探讨草鱼的生长及非特异性免疫指标的变化。结果表明,饲喂30 d时,添加光合细菌复合制剂的处理组草鱼白细胞吞噬百分比、血清总超氧化物歧化酶(SOD)活力、血清和肝脏谷胱甘肽过氧化物酶(GSH-Px)活力极显著高于饲喂基础饲料的对照组草鱼(P<0.01);饲喂60 d时,处理组草鱼血清抗菌活力、血清和肝脏总SOD活力较对照组极显著升高(P<0.01),血清丙二醛(MDA)含量显著升高(P<0.05)。结论为所选光合细菌复合制剂持续饲喂草鱼30 d或60 d,对草鱼生长量有促进作用,能提高草鱼的非特异性免疫功能。 相似文献
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微生态制剂对中国对虾幼体生长和非特异性免疫的影响 总被引：16，自引：0，他引：16
将球形红假单胞菌、噬菌蛭弧菌及粘红酵母予以不同搭配,得到4种微生态制剂,加入中国对虾(Fenneropenaeuschinensis)幼体培育水体中,研究其对中国对虾幼体生长和非特异性免疫的影响。结果表明,使用这4种微生态制剂均极显著(P<0.01)提高幼体变态率,存活率提高16.86%￣34.22%,体长增加0.64￣1.29mm;M1￣P5期的体长平均增长率也高出17%￣40%;酚氧化酶和超氧化物歧化酶活力也显著(P<0.05)高于对照组。其中添加噬菌蛭弧菌和球形红假单胞菌试验组的效果最好,建议中国对虾育苗中联合添加这种微生态制剂,使用浓度为2×105个/ml。 相似文献
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将6种中草药及维生素C配伍后混合粉碎,按1%、2%、3%和4%的比例添加于基础饲料中,连续饲喂刺参24 d,以基础饲料组为对照。于投喂后第7、10、14、18、24天测内脏组织的一氧化氮合酶(NOS)、碱性磷酸酶(AKP)、酸性磷酸酶(ACP)、超氧化物歧化酶(SOD)的活力。结果表明:投喂期内,随时间的延长,各试验组免疫酶活力均呈先升高后降低的趋势。各试验组NOS、SOD活性在投喂后第10、14、18、24天均显著高于对照组(P<0.05);各试验组AKP、ACP活性在投喂后第10、14、18天均显著高于对照组(P<0.05)。结合添加量及饲喂时间综合考虑,饲料中添加2%～3%中草药复方添加剂,投喂14～18 d可使刺参免疫相关酶的活力得到较大提高。 相似文献
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试验旨在研究添加凝结芽孢杆菌对南美白对虾生长性能、体组成、免疫功能的影响。选择规格一致、体重(1.05±0.05) g的对虾480尾,随机分为4组,每组4个重复,每个重复30尾。各组对虾分别投喂添加0、0.02%、0.04%、0.08%凝结芽孢杆菌的基础饲料。试验期42 d。结果显示,0.04%试验组对虾末重、增重率显著高于对照组(P<0.05),各试验组对虾的饲料系数均显著低于对照组(P<0.05),各试验组对虾的肝胰脏溶菌酶(LZM)活性均显著高于对照组(P<0.05),试验0.04%组和0.08%组对虾血清碱性磷酸酶(ALP)活性显著高于对照组和0.02%组(P<0.05)。研究表明,添加凝结芽孢杆菌可促进南美白对虾生长,提高免疫能力,以0.04%添加量较好。 相似文献
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VC及其与β-葡聚糖混合物对中国明对虾生长和免疫功能的影响 总被引：3，自引：0，他引：3
在基础饲料(未加VC)中分别添加0.030%VC(试验组1)、0.045%VC(试验组2)、0.030%VC+0.05%β-葡聚糖(试验组3)、0.030%VC+0.10%β-葡聚糖(试验组4),以基础饲料为对照组,饲喂中国明对虾幼虾[初始体重(0.065±0.010)g],经过室内网箱(50cm×60cm×120cm)40d的饲养试验,测定中国明对虾幼虾成活率、相对增长(重)率、免疫保护率及肌肉中ACP、CAT、SOD、LSZ活性。结果表明,试验组1的相对增长率显著高于对照组(P<0.05);试验组4的相对增长(重)率极显著高于对照组(P<0.01);试验组的成活率与对照组相比无显著差异;试验组2和组4的ACP活性分别显著、极显著高于对照组;试验组1和组2的CAT活性显著高于对照组;试验组4的LSZ和SOD活性显著高于对照组;试验组的免疫保护效果好于对照组。 相似文献
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为研究复方中草药提取物对夏季断奶仔猪生长性能的影响,将28±2d断奶的仔猪80头随机分为2组(对照组和试验组),每组2个重复。对照组饲喂基础日粮,试验组饲喂在基础日粮中添加0.15%复方中草药提取物的试验日粮,试验期为21d。结果:与对照组相比,试验组仔猪日增重显著提高(P<0.10);日采食量也有一定程度的提高(P>0.10);料重比较对照组也有明显降低(P<0.10);而腹泻率显著低于对照组(P<0.05)。结果表明,饲料中添加0.15%复方中草药提取物能够有效改善夏季断奶仔猪的生长性能。 相似文献
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为研究不同剂量的中草药饲料添加剂对三黄鸡血液生化指标和免疫功能的影响,试验选用1日龄健康的三黄鸡150只,随机分成基础日粮组、基础日粮+0.06% 阿莫西林组、基础日粮+0.7 g/kg中草药制剂组、基础日粮+1.0 g/kg中草药制剂组、基础日粮+1.3 g/kg中草药制剂组共5个组,采用舍内笼养,试验期为42 d。结果表明：与对照组相比较,基础日粮+1.0 g/kg中草药制剂组的三黄鸡平均日增重增加了 11.94%,血液中总蛋白提高了15.3%,与添加阿莫西林组相比提高了13.5%,差异显著（P < 0.05）。中草药制剂添加饲喂,可以有效促进三黄鸡免疫器官的发育和血液中非特异性抗体的分泌,尤其是基础日粮+1.0 g/kg中草药制剂试验组三黄鸡的胸腺指数、脾脏指数和法氏囊指数显著高于对照组和抗生素组（P <0.05）|同时血液中IgG和IgM含量较对照组分别提高了11.03% 和17.39%（P < 0.05）|与抗生素组相比血液中IgG和IgM含量分别提高了16.05% 和18.42%（P < 0.05）。由此可见,在三黄鸡仔鸡基础日粮中添加适当剂量的中草药制剂能改善其生长性能和免疫功能。
[关键词] 三黄鸡|血液指标|免疫功能|中草药制剂 相似文献
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《中国饲料》2017,(15)
本文采用体外诱导法制备含有抗菌活性物质的柞蚕蛹粉(IPP),将其以不同比例(0、0.5%、1.0%)添加到凡纳滨对虾(体重约8.3 g/尾)基础饲料中,喂养5周后测定其增重率、肌肉组成成分、成活率和免疫力,喂养试验结束后进行10 d的水浴攻毒(哈维氏弧菌108/m L),研究饲喂IPP对凡纳滨对虾免疫保护率的影响。结果表明:饲喂IPP组对虾体增重率均高于对照组,其中1.0%剂量组比对照组提高35.15%,达到显著水平(P0.05);0.5%和1.0%组成活率分别比对照组提高7.73%和10.60%(P0.05);肌肉成分检测表明,1.0%试验组粗脂肪含量显著高于对照组(P0.05);饲喂IPP组对虾血清超氧化物歧化酶(SOD)、酸性磷酸酶(ACP)、碱性磷酸酶(ALP)和多酚氧化酶(PPO)都显著高于对照组(P0.05),最多分别比对照组提高11.65%、50.07%、66.55%和7.30%。饲喂IPP组致病菌的免疫保护率也显著高于对照组(P0.05)。综上,柞蚕免疫蛹粉可显著提高凡纳滨对虾增重率和抗病力,并且其适宜添加量为1.0%。 相似文献
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本研究旨在用发酵中草药微生态制剂替代饲料中抗生素对肉鸡生产性能的影响。选取1日龄至42日龄出栏的AA肉鸡31000只为试验对象,分为中草药试验组和抗生素对照组2个组。试验对比各组日增重、饲料转化率、死淘率和免疫抗体滴度。结果表明,饲料中添加发酵中药微生态制剂能显著提高肉鸡生产性能,试验组明显高于对照组(P<0.05)。结论:用发酵中草药微生态制剂替代饲料中的抗生素饲喂肉鸡,能够显著改善和提高肉鸡的生产性能,加快促进肉鸡生长,提高免疫力和抗病力,减少和降低肉鸡发病率。 相似文献
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中草药饲料添加剂对肉仔鸡生长性能和免疫器官指数的影响 总被引：2，自引：0，他引：2
为了研究日粮中添加不同剂量的中草药饲料添加剂对肉仔鸡生长性能和免疫器官指数的影响,选取体重接近的健康1日龄AA肉仔鸡288只,按体重均匀分为4组,每组6个重复,每个重复12只鸡,即每组72只鸡。设对照组：日粮中不添加中草药饲料添加剂;试验Ⅰ组：日粮中添加0.5%中草药饲料添加剂;试验Ⅱ组：日粮中添加1%中草药饲料添加剂;试验Ⅲ组：日粮中添加2%中草药饲料添加剂。进行为期42d的饲养试验,测定各组的采食量、日增重、料重比以及脾脏指数和法氏囊指数。结果表明,肉仔鸡日粮中添加复方中草药制剂能够显著提高生长性能及免疫器官指数,日粮中添加1%复方中草药制剂效果最好。 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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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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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