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研究中药复方"健脾消食散"添加剂对雏鸡免疫功能影响。将200只健康、14日龄和体质量接近的兰灰祖代蛋雏鸡随机分为空白对照组、低剂量组、中剂量组和高剂量组,每组50只鸡。于21日龄对4组雏鸡用新城疫Ⅳ系弱毒疫苗进行滴鼻点眼免疫,分别按照饲喂量的0.5%、1.0%和1.5%添加健脾消食散,连续7 d,试验周期为49 d。分别于21、28、35、42和49日龄时,每组随机各取10只鸡进行白细胞总数、血清抗体效价、免疫器官指数(脾和法氏囊)测定。结果表明:中药复方"健脾消食散"添加剂高、中和低剂量均能显著促进血液中白细胞总数的增加和血液HI抗体产生,显著增加肉鸡法氏囊和脾免疫器官指数,促进免疫器官的发育。在雏鸡免疫后35日龄时白细胞总数、脾指数和鸡法氏囊指数达到最高峰值,42日龄时,雏鸡血液HI抗体水平达到最高水平;42日龄后各组雏鸡白细胞数量均呈下降趋势,49日龄与42日龄相比,各组雏鸡血液HI抗体水平均呈下降趋势,且与对照组间存在显著差异;中和高剂量组雏鸡28～49日龄时脾指数和鸡法氏囊指数差异不显著。中药复方"健脾消食散"添加剂高、中和低剂量均能够提高雏鸡的免疫力,添加中剂量"健脾消食散"能达到增加雏鸡免疫力的目的。 相似文献
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中草药飞燕草对雏鸡接种ND疫苗免疫效果的影响 总被引：5，自引：0，他引：5
本试验利用中草药飞燕草,对1日龄雏鸡添加饮喂,通过HI试验、红细胞C3bR花环试验、EY-混合玫瑰花环试验、免疫器官指数的测定,研究各中草药方对雏鸡在接种新城疫（ND）Ⅰ系、Ⅱ系疫苗后的免疫效果的影响,并测定雏鸡体重的变化.结果显示：飞燕草对提高ND Ⅰ系、Ⅱ系疫苗抗体效价,提高红细胞C3bR、TC、BC水平,促进胸腺、脾、法氏囊的发育,增重等几方面较对照组明显. 相似文献
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《饲料研究》2021,(1)
试验探讨复方中草药制剂对土鸡免疫功能和新城疫疫苗免疫效果的影响。120只土鸡随机分成4组,对照组饲喂基础日粮,低剂量组、中剂量组、高剂量组依次在基础日粮中添加0.5%、1.0%、2.0%复方中草药制剂。结果显示,与对照组相比,低剂量组白细胞介素2 (IL-2)、免疫球蛋白G (IgG)含量、新城疫抗体效价均显著升高(P0.05)。与对照组相比,中剂量组、高剂量组的胸腺指数、脾脏指数、法氏囊指数、IL-2、白细胞介素6 (IL-6)、γ-干扰素(IFN-γ)、IgG、免疫球蛋白A (IgA)含量、新城疫抗体效价均显著升高(P0.05)。中剂量组与高剂量组各检测指标差异均不显著(P0.05)。研究表明,土鸡基础饲粮中添加不同剂量的复方中草药制剂均能够改善土鸡的免疫功能和新城疫疫苗免疫效果,建议临床应用中选择添加剂量为1.0%。 相似文献
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益生芽孢菌制剂对鸡免疫促进作用的研究 总被引：4，自引：0，他引：4
本研究利用益生芽孢杆菌微生态饲料添加剂混料饲喂雏鸡,在7日龄和21日龄进行两次新城疫疫苗免疫后,检测相关指标。结果显示,试验组的新城疫血凝抑制效价(HI)明显高于对照组,差异极显著(P<0.01);脾脏指数、胸腺指数均显著高于对照组,差异显著(P<0.05);法氏囊指数高于对照组,差异不显著(P>0.05)。结果表明本制剂对雏鸡具有免疫调节作用。 相似文献
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复方中草药添加剂对云南武定雏鸡生长性能及免疫功能的影响 总被引：1，自引：0，他引：1
《黑龙江畜牧兽医》2015,(5)
为了研究复方中草药添加剂对云南武定雏鸡生长性能和免疫功能的影响,试验选取0日龄云南武定雏鸡240只,随机分为4组,每组60只,每组3个重复,每个重复20只,对照组饲喂基础日粮,试验1,2,3组分别添加0.2%、0.4%、0.6%复方中草药,测定雏鸡生长性能指标、新城疫HI抗体水平、免疫器官指数、补体C3、C4水平及免疫球蛋白含量。结果表明:添加0.4%复方中草药能显著提高武定雏鸡生长性能(P0.05),显著提高HI抗体水平(P0.05),促进免疫器官的生长,显著提高补体C3、C4及lg G含量(P0.05)。 相似文献
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1日龄雏鸡感染传染性法氏囊病病毒后再一次、二次接种新城疫疫苗,T、B 细胞数量及功能均明显低于其相应对照组,说明感染雏鸡对新城疫疫苗的免疫应答功能明显降低。攻击新城疫强毒后,感染鸡二次免疫组的免疫保护率明显高于感染鸡一次免疫组,并接近对照一次免疫组的水平。 相似文献
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为探讨不同免疫接种途径对鸡新城疫(ND)弱毒疫苗免疫效果的影响,我们将健康1日龄海兰蛋公鸡雏鸡(48只)随机分为滴鼻免疫组、肌肉注射免疫组、后海穴常规剂量免疫组和后海穴半剂量免疫组,每组12只.分别于第14日龄和28日龄接种新城疫IV系弱毒苗(LaSota株)1羽份/只,后海穴半剂量免疫组接种0.5羽份/只.分别于免疫前和免疫后7、14、21d和28d称重,无菌操作采血,分离血清,检测血清中的血凝抑制效价(HI).结果显示:与常规途径免疫组相比,后海穴常规剂量免疫组和后海穴半剂量免疫组可显著增强鸡血清NDV特异性HI效价(P＜0.05),且显著提高试验鸡只的日增重(P＜0.05);滴鼻免疫组与肌肉注射免疫组相比,虽然增加了HI效价,但统计学比较差异不显著(P＞0.05).试验结果说明后海穴接种鸡新城疫疫苗可显著提高鸡血清NDV的HI效价,提高鸡生产性能,同时节约疫苗用量. 相似文献
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本研究利用益生芽孢杆菌微生态饲料添加剂混料饲喂雏鸡，在7日龄和21日龄进行两次新城疫疫苗免疫后，检测相关指标。结果显示，试验组的新城疫血凝抑制效价（HI）明显高于对照组，差异极显著（P＜0．01），脾脏指数，胸腺指数均显著高于对照组，差异显著（P＜0．05），法氏囊指数高于对照组，差异不显著（P＞0．05），结果表明本制剂对雏鸡具有免疫调节作用。 相似文献
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Different approaches to the vaccination of free ranging village chickens against Newcastle disease in Qwa-Qwa, South Africa 总被引：3，自引：0，他引：3
The aim of this study was to develop a strategy to control Newcastle disease (ND) in free ranging village chickens using the Nobilis ND Inkukhu vaccine (Intervet South Africa). The study was conducted at Thibella village in Qwa-Qwa, South Africa from April 2001 to October 2002. Three different routes of vaccination (administration via eye-drop, drinking water and feed) were investigated. The haemagglutination inhibition (HI) test was conducted monthly in order to measure the antibody response of village chickens after immunization against Newcastle disease. Using a South African isolate of velogenic ND virus, challenge trials were conducted to determine the efficacy of the vaccine. A questionnaire was provided to evaluate perceptions of farmers on vaccinations. The eye-drop vaccination route produced the highest HI titres ranging between 2.7 and 4.4, followed by the drinking water vaccination route with titres ranging between 2.3 and 4.0. The lowest titres were from the feed vaccination route which ranged between 1.6 and 3.0. Following the challenge, the entire control group died on the third and fourth day after infection. However, 70% of the chickens immunized by using either the eye-drop or drinking water route survived the challenge. Only 20% of the chickens from the group immunized through the feed route survived. Evidently both the eye-drop and drinking water routes were efficient in preventing disease. Necropsies showed that vaccinated chickens had mild lesions whilst control chickens had severe lesions compatible with Newcastle disease. The efficacy of the vaccine using either of the routes can be enhanced by administration of booster vaccinations at 3-month intervals during the first year of a vaccination campaign and then at 6-month intervals from the second year onwards. The majority of the owners indicated that they would prefer to vaccinate their flocks using the drinking water route. 相似文献
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通过不同的免疫途径对商品蛋雏鸡进行免疫,探讨不同的免疫途径对商品蛋雏鸡新城疫(Newcastle disease,ND)黏膜抗体及血清抗体的影响。结果表明,同时用新城疫弱毒疫苗免疫后,不同的免疫途径产生的新城疫黏膜抗体及血清抗体效价有较大差异。采用喷雾法于3日龄首免,15日龄二免,25日龄三免,鸡体产生保护水平(6 log2)以上的ND黏膜抗体和血清抗体最快、抗体水平最高、维持时间最长、总体免疫效果最好,而采用饮水免疫的试验组产生的ND黏膜抗体和血清抗体水平均不高,总体免疫效果最差。 相似文献
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Chen D Colditz IG Glenn GM Tsonis CG 《Veterinary immunology and immunopathology》2000,77(3-4):191-199
Cholera (and related) toxins (CT) when applied topically on unbroken skin induce systemic immune responses in mice, a procedure called transcutaneous immunization (TCI). The current study examined the capacity for TCI to induce systemic immune responses in sheep. Three groups (n=5 per group) were immunized at day 0 (priming) and day 28 (boosting) with 250 microg of CT in water by TCI, with 25 microg of CT in alum by intramuscular injection, or not immunized. Serum samples were taken at days 0, 28, 42, 56 and 70 after immunization for measurement of CT-specific IgG as well as CT-specific IgG1, IgG2, IgA and IgM antibodies by ELISA. After immunization, IgG, IgG1 and IgG2 antibody in immunized groups were significantly higher than in the control group, and boosting further increased these titres. IgG, IgG1 and IgG2 in the injection group were significantly higher than in the TCI group. There was a preponderance of IgG1 antibody, relative to IgG2, in both immunized groups. CT-specific IgA and IgM were detected in both immunized groups. Lymphocyte proliferation to CT was measured at day 90. A CT-specific lymphocyte proliferative response (stimulation index>2) was detected in all sheep from the injection group, in two sheep from the TCI group and in none of the controls. Results demonstrated that TCI induces primary and secondary antibody responses and specific proliferative responses to CT in sheep. 相似文献
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Illango J Olaho-Mukani W Mukiibi-Muka G Abila PP Etoori A 《Tropical animal health and production》2005,37(1):25-31
A locally-produced Newcastle disease (ND) I-2 thermostable vaccine of embryo-infective dose (EID50) 10(8.5) per ml was administered to 100 laboratory chickens in four test groups, each of 25 birds. It was given by the eye-drop method, in drinking water, in drinking water freshly medicated with levamisole, or using millet grains as a vaccine carrier. A fifth control group consisting of 25 birds received the heat-sensitive La Sota vaccine (EID50 10(9) per ml) by the eye-drop method. The immunological responses were monitored by the enzyme-linked immunosorbent assay (ELISA) ND antibody technique using serum samples collected from 18 birds in each group at 3-week intervals for 3 months. The overall mean ND antibody log(10) titres and percentage positivities were 3.1, 88%; 2.9, 70%; 3.0, 83%; 3.2, 87% and 3.3, 87%, respectively. The use of water alone or medicated with levamisole for vaccine administration produced significantly lower ND antibody titres only in the first 3 weeks. The immunogenicity shown by the I-2 vaccine as a potential vaccine is discussed in relation to free-range poultry management conditions in Uganda. 相似文献
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Prevalence studies have shown that almost 100% of free-range chickens are infected with a wide range of parasites. The infections are mostly subclinical in nature, resulting in production losses and occasionally mortality. Newcastle disease (ND), on the other hand, results in high mortality rates during epidemics. ND is a limiting factor for increasing poultry production in many tropical countries, where frequent reports indicate vaccination failures. The aim of our study was to investigate the influence of helminths on the antibody response after vaccination against Newcastle disease of free-range chickens naturally infected with parasites. Sixty chickens were divided into six groups, of which three were vaccinated against ND with a live De Soto vaccine, while the other three remained non-vaccinated. One group within the vaccinated groups and the one within the non-vaccinated group was kept naturally infected with helminth parasites, while the other two groups in each set were dewormed with fenbendazole and niclosamide, and one of each of these groups was subsequently infected with Ascaridia galli. After vaccination, all the groups were followed for 5 weeks and their antibody titres were determined weekly using a HI test. All the birds were finally challenged 4 weeks after vaccination with a virulent velogenic ND virus obtained from a field outbreak. All the vaccinated chickens seroconverted and had high antibody levels after 3 weeks, but these dropped to low levels at 4 weeks after vaccination. After challenge, the antibody titres rose in the dewormed groups but not in the parasite-infected groups. After 5 weeks, all the parasite-infected animals had significantly lower antibody titres than the dewormed animals. All the vaccinated chickens survived the challenge infection, emphasizing the importance of the cellular immune response. Further studies are needed to examine the effects of the parasitic infection on protection against ND over a longer period. 相似文献
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Twenty-eight one-day-old chickens with infectious bronchitis virus (IBV) maternal antibodies were immunized with strain H120 (Bronchovac-I, Phylaxia) in spray form. The chickens were kept in an isolator. On day 42 and 56 the chickens were immunized with IBV strain M41 (10(3.0)EID50/0.1 ml). Serum antibody titres were measured by both serial dilution and single dilution ELISA on day 42, 56 and 76. "Twice negative average" (TNA), "sample to positive" (SP) and "subtraction method" (SM) titres were calculated from the serially diluted sera, and SP and SM titres were calculated from the single dilution. Titres obtained by the different methods showed a good correlation for sera of low, medium and high antibody levels. The authors recommend the use of the single dilution method. 相似文献
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观察不同浓度的复方多糖、黄芪多糖（APS）、当归多糖（ASP）及淫羊藿多糖（EPS）对正常罗曼雏鸡免疫功能的影响。将260只1d龄健康罗曼雏鸡随机分为13组,每组20只。分别于1d龄皮下注射生理盐水以及复方多糖、APS、ASP、EPS,连续注射7d。于7、14、21、28、35、42、49、56d龄采血,检测淋巴细胞转化率和ND—HI抗体效价。试验结果表明：使用复方多糖、APS、ASP、EPS后,各试验组外周血淋巴细胞转化率和ND—HI抗体效价明显升高。复方多糖可使外周血淋巴细胞转化率和ND—HI抗体效价显著高于其他各多糖组。复方多糖、APS、ASP、EPS均可提高鸡的外周血淋巴细胞转化率和ND—HI抗体效价,其中复方多糖效果最好。 相似文献
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核桃青皮水提物对鸡生长性能及禽流感和新城疫免疫效果的影响 总被引：1，自引：1，他引：0
试验旨在研究核桃青皮水取物对云南本地土杂鸡生长性能和禽流感、新城疫抗体水平的影响。选取120只28日龄本地土杂鸡,随机分为4个组（对照组、试验1组、试验2组、试验3组,分别在饮水中添加0、1%、3%、5%核桃青皮水提物）,每组30只（公母各半）,1只为1个重复。生产性能测定结果表明：65日龄时,各试验组平均体重均显著高于对照组（P<0.05）,且试验3组的明显高于其他试验组（P<0.05）;试验3组平均日增重（ADG）为62.89 g,明显高于其他各组（P<0.05）,料重比（F/G）也明显低于对照组和其他试验组,分别降低了12.00%、13.39%、5.17%（P<0.05）。新城疫（ND）和禽流感（H7、H5）抗体水平的测定结果表明,免疫46 d后试验3组鸡新城疫抗体水平明显高于对照组和其他试验各组（P<0.05）。免疫48 d后试验2和3组鸡禽流感（H7）抗体水平显著高于对照组和试验1组（P<0.05）。试验2和3组禽流感（H5）抗体水平与对照组无明显差异（P>0.05）。试验结果表明,核桃青皮水提物可提高云南本地土杂鸡的生长性能和新城疫、禽流感（H7）抗体水平,且其效果随着核桃青皮水提物饮水浓度的增加而提高,综合来看以5%核桃青皮水提物效果最好。 相似文献
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不同鸡新城疫疫苗免疫鸡血清HI抗体的测定 总被引：3，自引：0，他引：3
将试验鸡分成3个试验组和1个对照组。A组鸡接种鸡新城疫系疫苗,B组鸡接种油乳剂灭活苗,C组鸡接种鸡新城疫系疫苗,并在接种疫苗后第3、4、5、6、7、9、11、13、15、20、25d采取各组鸡血并分离血清,检测HI抗体。结果表明,接种系疫苗的组,HI抗体效价均值从4.67log2上升到10log2,接种后第5d开始上升,接种后第11d达到峰值,持续6d保持高滴度抗体水平。接种系疫苗的组,HI抗体效价均值从4.67log2上升到7log2,接种后第4d开始上升,接种后第9d达到峰值。接种油乳剂灭活苗的组,HI抗体效价均值从4.67log2上升到9.33log2,接种后第5d开始上升,接种后第11d达到峰值,持续16d保持高滴度抗体水平。系疫苗HI抗体效价上升快,效价高,较适合于紧急接种,油乳剂灭活苗HI抗体效价可在高水平维持较长时间,较适合于预防接种。 相似文献
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Shafqat F. Rehmani 《Preventive veterinary medicine》1996,25(3-4):241-248
Twelve-day-old chickens were vaccinated once with different Newcastle disease (ND) vaccines ( F, La Sota and Mukteswar) by two different routes (intraocular and drinking water). Chickens from a seventh group were uninoculated controls. At weekly intervals for 7 weeks after vaccination, 20 chickens from each vaccinated group and 20 chickens from the control group were examined for the production of haemagglutination-inhibition (HI) antibodies and for protection as assessed after challenge with velogenic, viscerotropic ND virus.
La Sota ND vaccine used intraocularly ranked the best and Mukteswar vaccine by the drinking water route the worst for their HI antibody titres prior to challenge. Differences between the treatments in protection were examined. For all three vaccines intraocular vaccine produced higher protection than drinking water vaccine. An inverse relationship between prechallenge and postchallenge HI titres was also recorded. 相似文献