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目的探讨猪瘟、猪口蹄疫、猪蓝耳病疫苗的免疫效果。方法分别采用不同时间段免疫接种和同时分点免疫接种进行免疫试验。结果免疫副反应的发生率为1.00%,猪瘟病毒的合格率为91.00%。结论猪瘟、猪口蹄疫、猪蓝耳病疫苗在利用上述两种方式注射时安全有效值得推广。 相似文献
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为探索生猪重大疫病的科学免疫方法,确定最佳免疫程序,笔者设计并开展了口蹄疫(FMD)合成肽苗(或灭活苗)、猪瘟(HC)脾淋苗、高致病性蓝耳病弱毒疫苗(或灭活苗)的不同组合注射、单独注射、不同疫苗类型注射的试验研究.结果表明:3种疫苗不同组合注射或单独注射,以及使用不同类型疫苗注射,其免疫副反应均无明显差异;平均免疫抗体效价及群体合格率各组间存有差异;采用猪口蹄疫、猪瘟、猪蓝耳病3种疫苗同时分点注射,以及仔猪首免口蹄疫、猪蓝耳苗,再免疫口蹄疫、猪瘟苗的免疫效果最佳. 相似文献
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本文探讨了猪口蹄疫、猪瘟、高致病性猪蓝耳病三种疫苗不同组合分点免疫的效果。将生猪随机分为A、B、C、D、E组,每组生猪60头。每组试验对象采用不同的疫苗接种方法,然后观察副反应发生率和抗体合格率。结果表明:C组试验结果猪口蹄疫、高致病性猪蓝耳病免疫抗体符合国家标准,且没有明显副反应。先接种口蹄疫疫苗,在第7天同时进行分点接种高致病性猪蓝耳病疫苗和猪瘟疫苗,该免疫程序具有免疫效率高、效果好、副反应低的特点,是免疫工作中的首选方案。 相似文献
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猪瘟、猪口蹄疫、高致病性猪蓝耳病疫苗有效免疫试验初探 总被引:3,自引:0,他引:3
为推广猪瘟、猪口蹄疫和高致病性猪蓝耳病3种疫苗有效免疫,在前期开展"猪瘟疫苗(脾淋源)、猪O型口蹄疫疫苗和高致病性猪蓝耳病疫苗有效免疫试验"确定新的免疫程序基础上进行扩大试验,进一步验证猪瘟疫苗1头份免疫剂量足以产生可靠的免疫保护;先免疫接种猪瘟疫苗,1周后免疫接种口蹄疫和高致病性猪蓝耳病疫苗,二者有明显的协同促进作用,适宜在农村散户中使用;3种疫苗同时分点注射,相互之间干扰较大,猪瘟病毒抗体产生时间推迟,不宜推广使用。 相似文献
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本试验用108头2月龄以上健康猪,先用猪瘟细胞苗单独免疫,间隔10 d后用高致病性猪蓝耳病活疫苗和猪口蹄疫O型灭活苗同时分点注射。结果表明:猪瘟的免疫抗体合格率达79.63%,猪口蹄疫抗体合格率达94.44%,高致病性猪蓝耳病抗体合格率达87.96%,均超过农业部规定的免疫抗体合格率≥70%的要求,并且免疫过程中未出现不良反应,猪口蹄疫与猪高致病性蓝耳病活疫苗可以同时免疫。 相似文献
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为了优化猪口蹄疫灭活苗、猪三联活疫苗和猪瘟活疫苗的免疫程序,试验依次分组进行了仔猪母源抗体消长情况、不同剂量口蹄疫和猪瘟疫苗同时分点注射免疫同一月龄仔猪后抗体消长情况、猪瘟疫苗与猪三联疫苗分别和口蹄疫疫苗同时分点注射免疫同一月龄仔猪后抗体消长情况的测定,并对测定数据进行统计分析。结果表明:仔猪母源抗体合格率在35日龄时接近70%临界值,35日龄后母源抗体合格率呈急剧下降趋势,且不足以抵御外界病毒侵袭;不同剂量口蹄疫疫苗免疫同一月龄仔猪后有效保护期(均为16周)相同,而不同剂量猪瘟疫苗免疫后的有效保护期不同,适当加大猪瘟疫苗注射剂量(2 mL/头)可增强免疫效果,但过大剂量注射猪瘟疫苗不能持续增强免疫效果,且会造成疫苗浪费;猪瘟疫苗与猪三联疫苗分别和猪口蹄疫疫苗同时分点注射免疫同一月龄仔猪后抗体有效保护期(均为18周)相同。说明仔猪在28~35日龄时用1 mL/头口蹄疫(O型灭活苗)和2 mL/头政府采购专用猪瘟活疫苗(脾淋苗)同时左右颈部肌肉注射接种进行初免,然后每隔4个月采用同样方法、同样剂量免疫1次,猪瘟活疫苗(脾淋苗)与猪三联活疫苗应轮流使用。 相似文献
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Evidence for the non-involvement of the uterus in the lifespan of the corpus luteum in the cyclic dog 总被引:1,自引:0,他引:1
Progesterone levels in peripheral blood of dogs were analysed during the cycle in which hysterectomy (n = 5) or sham surgery (n = 3) was performed as well as during the cycle of dogs (n = 5) hysterectomized at least one year prior to this study; the data were compared with the findings in control dogs (n = 3). The averages of the duration of the luteal period observed in the three experimental groups were not significantly different from those of control dogs. Immediately after surgery, the progesterone level decreased from 25 to 50% of the presurgical level, but returned to presurgical level in about four days. Prolactin levels were elevated for about 30 h after surgery. Nevertheless, the averages of the mean prolactin levels for each animal during the luteal period of the experimental groups were not significantly different from those of control dogs. It is concluded that in the dog, the uterus is not involved in the lifespan of the cyclic corpus luteum. 相似文献
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嗅源是军犬嗅觉作业训练的依据.军犬鉴别中嗅源能力的培养在整个鉴别训练中占有重要地位,关系到鉴别训练的成败和鉴别能力的提高.所以,军犬在嗅认嗅源时必须按照训犬员的指令充分、细致地感受嗅源气味,并且对嗅源气味产生兴奋反应.如何培养军犬充分嗅认嗅源以及及时解决嗅认过程中出现的问题,成为我们进行鉴别训练的关键.…… 相似文献
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Meschan EM Peham C Schobesberger H Licka TF 《Veterinary journal (London, England : 1997)》2007,173(3):578-584
As there is no statistical evidence that saddle fit influences the load exerted on a horse's back, this study was performed to assess the hypothesis that the width of the tree significantly alters the pressure distribution on the back beneath the saddle. Nineteen sound horses were ridden at walk and trot on a treadmill with three saddles differing only in tree width. Kinetic data were recorded by a sensor mat. A minimum of 14 motion cycles were used in each trial. The saddles were classified into four groups depending on fit. For each horse, the saddle with the lowest overall force (LOF) was determined. Saddles were classified as "too-narrow" if they were one size (2 cm) narrower than the LOF saddle, and "too-wide" if they were one size (2 cm) wider than the LOF saddle. Saddles two sizes wider than LOF saddles were classified as "very-wide". In the group of narrow saddles, the pressure in the caudal third (walk 0.63 N/cm(2)+/-0.10; trot 1.08 N/cm(2)+/-0.26) was significantly higher compared to the LOF saddles (walk 0.50 N/cm(2)+/-0.09; trot 0.86 N/cm(2)+/-0.28). In the middle transversal third, the pressure of the wide saddles (walk 0.73 N/cm(2)+/-0.06; trot 1.52 N/cm(2)+/-0.19) and very-wide saddles (walk 0.77 N/cm(2)+/-0.06; trot 1.57 N/cm(2)+/-0.19) was significantly higher compared to LOF saddles (walk 0.65 N/cm(2)+/-0.10/ 0.63 N/cm(2)+/-0.11; trot 1.33 N/cm(2)+/-0.22/1.27 N/cm(2)+/-0.20). This study demonstrates that the load under poorly fitting saddles is distributed over a smaller area than under properly fitting saddles, leading to potentially harmful pressures peaks. 相似文献
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Observations on the Pathology of the Spleen of the Cat 总被引:1,自引:0,他引:1
Abstract— Lesions were found in the spleen of four of sixty-three cats examined post mortem in the department, and comprised two examples of lymphosarcoma, one of chronic fibrinous peritonitis and one of subcapsular haematoma. Abnormalities were found in two cat spleens received from veterinary surgeons in general practice. In one cat the abnormalities were an haemangiosarcoma with secondary deposits in the liver and in the other extensive mast cell infiltration. In addition lesions were detected in the spleen of three of eighty-seven cats examined post mortem in general practice. The lesions were: multiple secondary deposits of adenocarcinoma from a primary tumour of the mammary gland, a ruptured spleen and a foreign body below the splenic capsule. Résumé— L'examen microscopique de soixante-trois chats pratiqué dans le service a permis de rencontrer quatre fois des lésions de la rate, dont deux lymphosarcomes, une péritonite capsulaire fibrineuse et un hématome sous-capsulaire. D'autre part des lésions ont été trouvées dans deux rates de chat expédiées par des vétérinaires exerçant en pratiaue générale. Chez un chat il s'agissait d'un htmangiosarcome avec métastases hépatiques et chex l'autre d'une infilt ation diffuse par des mastocyta. De plus, on a rencontré des llésions dnas la rate de trois chats parmi quatre-vingt sept autopsies effectuées dans le cadre d'une clientèle génárale. Ces iésions étaient dés métastases multiples d'un adénocarcinome dont la tumeur primitive siègeait dam la glande mammaire, une rupture de la rate et un corps érangers sou capsulaire. Zusammenfassung— Läsionen der Milz wurden bei vier von dreiuiidsechzig in dieser hbteilung sezierten Katzen gefunden, und zwar in zwei Fällen ein Lymphosarkom, in einem Falle eine chron-ische fibrinöse Peritonitis und in einem ein subkapsuläres Hématom. Anomalien fanden sich auch in der Milz von zwei Katzen, die aus der tierxrztlichen Praxis eingesandt wurden. Bei der einen Katze war dies ein Hämangiosarkom mit Metastasen in der Leber, bei der anderen eine weitläufige Infiltration der Mastzellen. Außerdem wurden bei drei von siebenundachtzig in der Praxis sezierten Katzen Milzläsionen gefunden. Diese bestanden am multiplen Metastasen eines Adenokarzinoms der Brustdrüse, einer Milzzerreissung und einem Fremdkörper unterhalb der Milzkapsel. 相似文献