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991.
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[目的]估计莱西市奶牛布鲁氏菌病的流行率和地理分布,分析奶牛养殖场间布鲁氏菌病的传播风险因素。[方法]对莱西市1803个养殖户30119头应检奶牛,全部采样,采用虎红平板凝集和试管凝集垂直试验,同时开展奶牛布鲁氏菌病问卷调查。利用GIS、Epi Infor TM 7和SPASS软件,开展横断面研究和case-control研究,分析莱西市奶牛布鲁氏菌病阳性场户的空间分布、布鲁氏菌病流行率和养殖场间的风险因素分析。[结果]莱西市布鲁氏菌病的场户血清流行率是2.55%,个体血清流行率为0.38%;单因素分析发现存栏量、养殖模式、养殖环境、是否有专用产犊场地、挤奶方式、运奶方式、粪污是否分开处理、是否使用机械处理粪便等8个因素与奶牛布鲁氏菌病发生有一定关系(p<0.2);多因素logistic回归分析表明,存栏量少(10只以下)(OR=4.58,95%CI:1.87-11.23,p=0.001)和散养户集中村饲养(OR=2.21,95%CI:1.05-4.63,p=0.036)与该病发生相关。 相似文献
996.
附红细胞体病是以溶血性贫血、黄疸、发热为主要特征的人畜共患的血液感染性疾病,其病原体为附红细胞体。本病例通过流行病学调查、临床症状观察、尸体剖检和实验室检验,确诊为猪附红细胞体病。在采取综合性防治措施后疫情得到了有效控制。 相似文献
997.
Tien‐Chun Wan Yu‐Tse Liu Lan‐Tyi Duann Kuo‐Hui Yu Chih‐Ming Chen Liang‐Chuan Lin Ryoichi Sakata 《Animal Science Journal》2014,85(1):75-80
The purposes of this study were to assess the improvement of fatty liver induced by ethanol with animal liver and bile extracts. This research aimed to increase the economic values of animal liver and bile extracts and used these to reduce damage of ethanol‐induced fatty liver. Extracts came from animal liver and bile, including pig bile powder, pig liver extract, a mixture of pig bile powder and pig liver extract, chicken bile powder, chicken liver extract, and a mixture of chicken bile powder and chicken liver extract, and these were fed to Long‐Evans rats. The results showed that rats fed ethanol for long terms could increase values of aspartate transaminase, cholesterol, γ‐glutamy‐transferase and alkaline phosphatase. Pig bile powder could decrease the values of aspartate transaminase, cholesterol and γ‐glutamy‐transferase. The significances also decreased on aspartate transaminase, γ‐glutamy‐transferase and aspartate transaminase, which were carried out with the pig liver extract treatment. These results suggest pig bile and liver extracts have high potential to improve rats' ethanol‐induced fatty liver with serum biochemical parameters. 相似文献
998.
Hong-tao Chang Xiu-yuan He Yu-Feng Liu Lu Chen Quan-hai Guo Qiu-ying Yu Jun Zhao Xin-wei Wang Xia Yang Chuan-qing Wang 《Journal of veterinary science (Suw?n-si, Korea)》2014,15(3):399-407
A recombinant replication-defective adenovirus expressing the major epitopes of porcine circovirus-2 (PCV-2) capsid protein (rAd/Cap/518) was previously constructed and shown to induce mucosal immunity in mice following intranasal delivery. In the present study, immune responses induced by intranasal immunization with a combination of rAd/Cap/518 and cytosine-phosphate-guanosine oligodeoxynucleotides (CpG ODN) were evaluated in mice. The levels of PCV-2-specific IgG in serum and IgA in saliva, lung, and intestinal fluids were significantly higher in the group immunized with rAd/Cap/518 and CpG ODN than animals immunized with rAd/Cap/518 alone. The frequencies of IL-2-secreting CD4+ T cells and IFN-γ-producing CD8+ T cells were significantly higher in the combined immunization group than mice immunized with rAd/Cap/518 alone. The frequencies of CD3+, CD3+CD4+CD8-, and CD3+CD4-CD8+ T cells in the combined immunization group were similar to that treated with CpG ODN alone, but significantly higher than mice that did not receive CpG ODN. PCV-2 load after challenge in the combined immunization group was significantly lower than that in the phosphate-buffered saline placebo group and approximately 7-fold lower in the group treated with CpG ODN alone. These results indicate that rAd/Cap/518 combined with CpG ODN can enhance systemic and local mucosal immunity in mice, and represent a promising synergetic mucosal vaccine against PCV-2. 相似文献
999.
Juliana Abranches Soares Almeida Yanhong Liu Minho Song Jeong Jae Lee H Rex Gaskins Carol Wolfgang Maddox Orlando Osuna James Eugene Pettigrew 《畜牧与生物技术杂志(英文版)》2014,(2):173-180
An experiment was conducted to determine how an E. coil challenge and dietary clays affect the intestinal barrier of pigs. Two groups of 32 pigs (initial BW: 6.9 ± 1.0 kg) were distributed in a 2 x 4 factorial arrangement of a randomized complete block design (2 challenge treatments: sham or E. coil, and 4 dietary treatments: control, 0.3% smectite A, 0.3% smectite B and 0.3% zeolite), with 8 replicates total. Diarrhea score, growth performance, goblet cell size and number, bacterial translocation from intestinal lumen to lymph nodes, intestinal morphology, and relative amounts of sulfo and sialo mucins were measured. The E. coli challenge reduced performance, increased goblet cell size and number in the ileum, increased bacterial translocation from the intestinal lumen to the lymph nodes, and increased ileal crypt depth. One of the clays (smectite A) tended to increase goblet cell size in ileum, which may indicate enhanced protection. In conclusion, E. coli infection degrades intestinal barrier integrity but smectite A may enhance it. 相似文献
1000.
Measuring and characterizing fabric wrinkling objectively and accurately is of vital importance because wrinkling behavior is one of the most important factors to determine visual aesthetic of fabrics and clothes. In this paper, a novel method for multidirectional fabric wrinkling measurement is presented. 12 fabrics with different fiber contents and weave structures are prepared and wrinkled by the new method. GLCM variables and standard deviation of wavelet decomposition coefficients are used to characterize fabric wrinkling. Results show that WRA (wrinkle recovery angle) does not have significant linear correlation with the GLCM variables (energy, entropy, contrast and correlation). The wavelet coefficient standard deviation at level 6 has the highest correlation with average WRA. The equations between average WRA and standard deviations can be used to predicate average WRA of a fabric conveniently, avoiding the time-consuming and tedious testing of WRA in each direction. 相似文献