共查询到19条相似文献，搜索用时 250 毫秒
1.
山羊毛霉菌临床与病理学观察 总被引：4，自引：0，他引：4
以１０＾７个／ｍｌ微小根毛霉孢囊孢子悬液颈静脉接种２月龄山羊，每只５ｍｌ，每日１次，连续３日，经８８ｄ观察３／４只山羊死亡。病羊临床表现精神沉郁，消瘦，体温升高，腹泻，后肢瘫痪，白细胞总数及嗜中性白细胞成倍增加，全血ＧＳＨ－ＰＸ活性降低，Ｓ－ＧＯＴ、Ｓ－ＧＰＴ和ＡＫＰ活性升高，血清胆固醇值上升，但以上各项血液生化指标变化与对照羊相比差异不显著。病理变化为全身扩散性毛霉菌病，其典型病谱在肺脏，整个肺 相似文献
2.
以１０７个／ｍｌ微小根毛霉（Ｒｈｉｚｏｍｕｃｏｒｐｕｓｉｌｕｓ）孢囊孢子悬液颈静脉接种２月龄山羊,每只５ｍｌ,每日１次,连续３日,经８８ｄ观察３／４只山羊死亡。病羊临床表现精神沉郁,消瘦,体温升高,腹泻,后肢瘫痪,白细胞总数及嗜中性白细胞成倍增加,全血ＧＳＨ－ＰＸ活性降低,Ｓ－ＧＯＴ、Ｓ－ＧＰＴ和ＡＫＰ活性升高,血清胆固醇值上升,但以上各项血液生化指标变化与对照羊相比差异不显著（ｐ＞０．０５）。病理变化为全身扩散性毛霉菌病,其典型病变在肺脏,整个肺脏遍布灰白色圆形小结节。镜险肺结节中心为毛霉菌丝或碎片,周围淋巴细胞、单核细胞包绕。腿肌大部分肌束呈凝固性坏死,周围微血管内形成血栓 相似文献
3.
用ＰＭＳＧ加抗－ＰＭＳＧ血清（１：１）和ＰＧＦ２α对１２头奶牛进行超排处理；其中９头有效，３头无效。同时在超排处理过程中采奶样测定奶中孕酮含量。当注射ＰＭＳＧ后第２ｄ，有中孕酮含量〈５ｎｇ／ｍｌ的牛超排无效。当注射ＰＧＦ２α后２－４天，奶中孕酮〉１１ｎｇ／ｍｌ的牛超排也无效。配种当天奶牛中孕酮含量与可用胚胎率呈负相关。 相似文献
4.
5.
含硫氨基酸对黄曲霉毒素B1的解毒机理 总被引：2，自引：0，他引：2
口服黄曲霉毒素Ｂ１（２ｍｇ／ｋｇ）能引起雏鸡肝细胞明显损伤，表现肝脏谷胱甘肽（ＧＳＨ）含量降低，肝糖原减少，谷丙转氨酶活性升高。口服蛋氨酸、Ｎ－乙酰半光氨酸能够提高肝脏细胞ＧＳＨ水平。ＧＳＨ能与ＡＦＢ１结合而解毒。其作用机理是通过谷胱甘肽－硫－转移酶的作用。口服亚硒酸钠能提高谷胱甘肽过氧化物酶的活性，也能对抗ＡＦＢ１的毒性。 相似文献
6.
白纤维介素—1α调节仔猪睾丸间质细胞睾酮分泌的机制 总被引：1，自引：0，他引：1
本实验利用体外培养的２－３周龄仔猪睾丸间质细胞，研究了ＩＬ－１α调节间质细胞睾酮分泌的机制。结果表明，ＩＬ－１α能抑制ｈＣＧ刺激间质细胞分泌睾酮，其睾酮产生量随ＩＬ－１α剂量增大（０－１０μ／ｍｌ）及刺激时间延长（０－４８ｈ）而下降。 相似文献
7.
将２４头太湖猪新生杂种仔猪（二花×大白），分为４组，即在出生后隔离并分别人工哺喂葡萄糖盐水组（ＧＳ组，ｎ＝４），牛初乳组（ＢＣ组，ｎ＝５），牛乳（ＢＭ组，ｎ＝６）４８小时组和完全自然哺乳的猪初乳组（ＰＣ组，ｎ＝９）。酶联免疫分析法显示，牛ＩｇＧ在ＢＣ和ＢＭ组向仔猪血液中的转移分别在２４和１６小时左右达到峰值，为２８．１９±１５．４６ｍｇ／ｍｌ和１２．８９±１．７８ｍｇ／ｍｌ，以后逐渐下降。４８小时后回圈自然哺乳，第７天两组实验仔猪血中都仍有５ｍｇ／ｍｌ左右牛ＩｇＧ的残留。ＰＣ和ＧＳ组没有检测到牛ＩｇＧ免疫反应物。新生仔猪血清蛋白质浓度初生时平均为３１．８±１．８６ｍｇ／ｍｌ，ＰＣ组在出生后迅速增加，２４小时达８１．７８±８．６ｍｇ／ｍｌ，此后略有下降，４８小时为５６．６７±１１．３６ｍｇ／ｍｌ，第７天为８７．６７±３．８９ｍｇ／ｍｌ。ＢＣ和ＢＭ组与ＰＣ组有相似的变化；而ＧＳ组在４８小时内一直下降，４９小时为６．２５±２．２８ｍｇ／ｍｌ；自然哺乳后，第７天上升为４７．７５±２．６８ｍｇ／ｍｌ。但ＢＭ、ＧＳ组在２４小时、４８小时和第７天血清总蛋白浓度显著低于ＰＣ组（Ｐ＜０．０１）。血清ＳＤＳ－ＰＡＧＥ电泳显示， 相似文献
8.
母乳途径间接补硒的可行性及增强仔猪免疫机能的初步探讨 总被引：3，自引：0，他引：3
以某正常生产的集约化猪场为试验场所,在满足生长需要的全价配合饲粮（含硒量０．３１ｍｇ／ｋｇ）基础上,给哺乳母猪饲粮添加不同剂量的无结晶水亚硒酸钠（０．７５,１．０,１．５ｍｇ／ｋｇ）,检测断奶仔猪的血硒含量、谷胱甘肽过氧化物酶（ＧＳＨ－Ｐｘ）活性等生化指标并综合分析,结果仔猪血硒含量与哺乳母猪饲粮亚硒酸钠的添加量相对应,试验２组（１ｍｇ／ｋｇ组）仔猪的ＧＳＨ－Ｐｘ活性、红细胞、嗜中性白细胞、单核细胞和Ｔ淋巴细胞含量均显著增加,说明母乳途径间接补硒能提高仔猪的生理免疫机能。 相似文献
9.
２４头太湖猪新生仔猪（二花×大白）分为四组，在出生后隔离并分别人工哺喂葡萄糖盐水（ＧＳ组，ｎ＝４），牛初乳（ＢＣ组，ｎ＝５），牛乳（ＢＭ组，ｎ＝６）４８ｈ和自然哺乳（ＰＣ组，ｎ＝９）。前３组在４８ｈ后回圈哺乳。初乳对新生仔猪血液蛋白电泳形态的影响，新生仔猪血清蛋白质浓度初生时平均为３１．８±１．８６ｍｇ／ｍｌ，ＰＣ组在出生后迅速增加，２４ｈ达８１．７８±８．６ｍｇ／ｍｌ此后略有下降。４８ｈ为５６．６７±１１．３６ｍｇ／ｍｌ，第７天为８７．６７±３．８９ｍｇ／ｍｌ。ＢＣ和ＢＭ组与ＰＣ组有相似的变化；而ＧＳ组在４８ｈ内一直下降，４８ｈ为６．２５±２．２８ｍｇ／ｍｌ，自然哺乳后，第７天上升为４７．７５±２．６８ｍｇ／ｍｌ。但ＢＭ、ＧＳ组在２４ｈ、４８ｈ和第７天血清总蛋白浓度显著低于ＰＣ组（Ｐ＜０．０１）。血清ＳＤＳ—ＰＡＧＥ电泳显示，清蛋白（ＳＡ）ＰＣ、ＢＣ、ＢＭ三组４８ｈ内持续增加，ＧＳ组２４ｈ后显著下降，并且ＧＳ组在高分子量区（１５０ｋｄ）出现非抗体蛋白和多肽的聚合，其他三组则未见到。实验中未观察到牛乳酪蛋白向仔猪血液中的转移。 相似文献
10.
半胱胺引起绵羊外周血液β－内啡肽和几种主要代谢激素的变化 总被引：31，自引：3，他引：28
在４头装置长久性胃肠道瘘管和临时性颈静脉血管插管公绵羊研究表明，经十二指肠瘘管灌注半胱胺（８０ｍｇ／ｋｇ体重）后５ｄ内外周血液的血浆ＳＳ浓度降低３３．６８％（２３３．１±４．４ｐｇ／ｍｌ对１５４．６±＋５．２ｐｇ／ｍｌ，Ｐ＜０．０１）；胃泌素水平升高２３．９％（Ｐ＜０．０５），ＧＨ、胰岛素分别升高１２４．２％（Ｐ＜０．０１）和１４４．０８％（Ｐ＜０．０１）；Ｔ３、Ｔ４水平分别增加７１．８％（ｐ＜０．０１）和１７．５５％（Ｐ＜０．０５）；β－ＥＮＤ水平第３天升高５８．１１％（５７．２９±１．６９ｐｇ／ｍｌ对３２．４４±２．５０ｐｇ／ｍｌ，Ｐ＜０．０１），第５天回落（Ｐ＜０．ｍ）。本实验证明半胱胺可抑制反刍动物ＳＳ水平，使外周血液ＧＨ、胃泌素、胰岛素、Ｔ_３、Ｔ_４和β－ＥＮＤ水平均相应升高，提示促进了反刍动物的消化代谢水平。 相似文献
11.
Egeli AK Framstad T Morberg H Tverdal A 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》1998,27(4):123-128
The analytic precision of an automated blood analyzer, the Technicon H*1(R), was evaluated utilizing blood samples collected from 20 piglets at 1 and 14 days of age. The effect of storing the blood samples at 4 degrees C for 24 and 48 hours also was determined. Blood samples were analyzed twice on the first day and once on each of the subsequent tow days. Within-sample coefficient of variation was approximately 1% for hemoglobin concentration, erythrocyte count, hematocrit, mean cell volume, erythrocyte distribution width and hemoglobin distribution width (HDW); and approximately 5% for total leukocyte (WBC), neutrophils and lymphocyte counts. Mean HDW and automated differential WBC counts changed during storage to a degree that could be of clinical importance. Manual determination of differential WBC counts were compared with those obtained from the automated analyzer. Results correlated well for neutrophils (r=0.92 in 1-day-old and r=0.93 in 14-day-old piglets, P<0.001) and lymphocytes (r=0.85 in 1-day-old and r=0.93 in 14-day-old piglets, P<0.001). Other WBC values were too low to compare reasonably. 相似文献
12.
试验采用普通长白系仔猪建立猪链球菌2型动物模型,并进行详细的病理学观察。将8头仔猪随机分为试验组和对照组,用猪链球菌2型菌血静脉接种试验组,对照组接种生理盐水2 mL/头。攻毒猪5 d内全部死亡, 主要表现为脑膜炎、心外膜炎、关节炎和败血症等典型症状和病理变化,与自然感染情况相似。从感染死亡猪肺、脾、肝、心中均分离到与攻毒菌株相同的细菌。证明猪链球菌2型菌血静脉接种普通长白系仔猪可以复制出典型病例,成功建立了动物模型,对SS2致病性研究具有重要意义。 相似文献
13.
The emigration of neutrophils from the blood of neonatal piglets into the intestinal lumen in response to a K88-positive strain of Escherichia coli was investigated. The pig herd used was of known genetic susceptibility to K88-positive E coli and had recently experienced an outbreak of neonatal diarrhoea. Neutrophil emigration depended on certain factors. Neutrophils emigrated into ligated loops in susceptible piglets sucking immune colostrum from susceptible dams but not into loops in colostrum deprived resistant piglets or piglets sucking non-immune colostrum from resistant dams. In susceptible, colostrum deprived piglets neutrophils in intestinal contents were only associated with severe lesions. Large numbers of neutrophils which appeared at several foci on the villi were observed in three of six resistant piglets that sucked immune colostrum from susceptible dams. It was concluded that neutrophil emigration into the intestinal lumen of piglets could occur in response to K88-positive E coli and resulted not from the presence or absence of the intestinal K88-receptor but from the ingestion of immune colostrum. 相似文献
14.
The objective of the study was to analyze changes in peripheral blood leukocyte subsets in cases of naturally occurring exudative epidermitis (EE) in pigs. Five of ten piglets developed the chronic clinical form of EE 2-5 days after weaning (PW). Blood samples were obtained at 7, 14 and 21 days from both normal and clinically affected piglets for routine haematology and for the determination of CD45, CD21, CD4, CD8 and gammadeltaTCR cell markers by flow cytometry. When compared with clinically normal piglets EE affected pigs showed significantly decreased values of monocytes at 14 and 21 days PW, and increased numbers of neutrophils and leukocytes at 21 days PW. The EE affected pigs also had an early significant CD4(+) and CD8(high+) T lymphocyte proliferative response at 7 days PW. However affected pigs had a significantly reduced number of B (CD21(+)) and gammadeltaTCR(+) T lymphocytes in blood at 21 days PW. Although all values remained within the normal range, the significant differences in some peripheral blood leukocyte subsets between the two groups of piglets suggest that the generalised cutaneous infection with Staphylococcus hyicus is severe enough to induce a systemic inflammatory and immune responses. 相似文献
15.
Kastel R Bomba A Herich R Vasko L Svedova M 《Berliner und Münchener tier?rztliche Wochenschrift》2007,120(5-6):221-225
The present study investigated the influence of polyunsaturated fatty acids (PUFA) on the immune system of germ-free piglets. Oil with increased content of omega-3 PUFA was administered to piglets from the experimental group (EG) for four weeks. Piglets from the control group (CG) received identical volumes of saline solution. At the age of 21 days both groups of germ-free piglets were inoculated perorally with Lactobacillus casei subsp. casei at a dose of 2 ml (1x10(8) mli). At the age of 28 days, i.e. after one-week colonisation of germ-free piglets with Lactobacillus casei subsp. casei, significant differences were recorded in phagocytic activity of neutrophils (PANe) and phagocytic activity of potentially phagocytizing cells (PA) (P < 0.05). Between EG and CG there have been observed no significant differences in absolute numbers of CD4+ and CD8+ T lymphocytes and numbers of IgM cells and in additional investigated parameters - number of CD2+ T lymphocytes, index of phagocytic activity of neutrophils (IPANe) and index of phagocytic activity (IPA).The total number of leukocytes (Le) in EG was also higher. Of the parameters determined in blood serum we observed a significant increase in concentration of alpha linolenic, eicosapentaenoic and docosahexaenoic acids and a parallel decrease in the level of arachidonic acid. 相似文献
16.
Effect of vitamin E supplementation on various functional properties of macrophages and neutrophils obtained from weaned piglets 总被引：2，自引：0，他引：2
Fragou S Fegeros K Xylouri E Baldi A Politis I 《Journal of veterinary medicine. A, Physiology, pathology, clinical medicine》2004,51(4):178-183
Sixteen piglets were used to determine the effect of vitamin E supplementation on several functional properties of macrophages and neutrophils obtained from weaned piglets. Piglets, immediately following weaning, were assigned to one of three experimental groups: control (no vitamin E supplementation), low level of vitamin E supplementation (100 mg DL-alpha-tocopheryl acetate/kg diet) and high level of vitamin E supplementation (300 mg DL-alpha-tocopheryl acetate/kg diet). Supplementation of vitamin E lasted for a period of 36 days, following a 3-day adaptation period after weaning. Blood samples were collected on days 0, 12, 24 and 36 of the experimental period, monocytes/macrophages and neutrophils were isolated and the following parameters were determined in macrophages and neutrophils activated by phorbol myristate acetate: total cell-associated and membrane-bound urokinase plasminogen activator (u-PA) activity and superoxide anion production. Results showed that macrophages and neutrophils isolated from piglets that received supplemental vitamin E had higher (P < 0.05) total and membrane-bound u-PA activities as well as higher (P < 0.05) superoxide anion production compared with the values of the corresponding cells obtained from control piglets on day 12 of the experimental period. Both levels of vitamin E supplementation (low and high) were equally effective. In contrast, vitamin E supplementation had no effect (P > 0.05) on total and membrane-bound u-PA activities and superoxide anion production by porcine macrophages and neutrophils on days 24 and 36 of the experimental period. In conclusion, the low level of vitamin E supplementation is recommended for piglets for the first 2 weeks after weaning. 相似文献
17.
de Aluja AS Villalobos AN Plancarte A Rodarte LF Hernandez M Zamora C Sciutto E 《Veterinary parasitology》1999,81(2):129-135
The present study demonstrates that pigs experimentally infected with Taenia solium eggs develop resistance to reinfection that lasts at least five months. Thirteen 2-month-old piglets were infected with eggs of Taenia solium. After 5 months, two pigs were euthanized and five were challenged with eggs from a second tapeworm. Nine months after the first infection, six pigs were challenged with a third tapeworm. All 11 challenged pigs were euthanized 2 months after reinfection. In order to confirm the infectivity of the eggs, several piglets were inoculated with each taenia. Two of the five pigs reinfected after 5 months did not develop metacestodes, two showed few caseous non-infective forms and in the fifth pig, 14% of the metacestodes were vesicular and 86% colloidal and caseous. In the six animals challenged 9 months after the first infection, three were heavily infected with vesicular metacestodes and the other three showed only colloid and caseous forms in muscles. All parasites found in brains were vesicular. We conclude that immunity due to primary infection lasts at least 5 months. At 2 months of infection antigens of 24 and 39-42 kDa were the most frequently recognised. In those pigs with only a few caseous cysts in muscles and/or vesicular ones in brains no antibodies were detected. 相似文献
18.
本实验室2012年从江苏省太仓市某发病猪场分离到1株变异的伪狂犬病毒,命名为JS-2012。为了研究该分离株对仔猪的致病性,将12头15日龄的伪狂犬病毒阴性仔猪随机分为3组,其中2组（每组5头猪）分别通过肌肉注射和滴鼻接种JS-2012毒,第3组2头猪做空白对照。接种病毒的仔猪在攻毒后24 h体温均开始升高,4 d后开始死亡,死亡率为100%。临床观察发现,滴鼻组仔猪发病死亡明显快于肌肉注射组。对病死猪进行剖解,均可见大脑血管扩张并出血等典型的伪狂犬病病理变化。病理切片显示猪的脑蛛网膜下腔严重出血,其他各脏器也均有严重病理变化。结果表明该变异株JS-2012为伪狂犬强毒毒株。 相似文献
19.
L. A. van Leengoed J. Vos E. Gruys P. Rondhuis A. Brand 《The Veterinary quarterly》2013,33(3):131-141
In a commercial swine herd a rise was noted during the summer of 1981 in the number of repeat breeders, mostly four to eight weeks after serving. During the autumn there was a decrease in the litter size at birth and an increase in the number of stillborn and mummified piglets. Several gilts and sows showed a seroconversion against Porcine Parvovirus (PPV), determined by the Haemagglutination Inhibition lest (HI‐test). Characteristic pathological findings were seen in some maturely stillborn and neonatally deceased piglets (up to an age of 28 days); hepatic congestion and necrosis, accummulation of fluid in body cavities, myocarditis, and encephalitis were the most Prominent features. Serological tests for antibodies in blood samples of one sow and body fluids of two stillborn piglets were suggestive of Porcine Parvovirus as the aetiological agent. 相似文献