全文获取类型
| 收费全文 | 57篇 |
| 免费 | 0篇 |
专业分类
| 畜牧兽医 | 57篇 |
出版年
| 2020年 | 1篇 |
| 2019年 | 1篇 |
| 2014年 | 1篇 |
| 2010年 | 2篇 |
| 2009年 | 1篇 |
| 2007年 | 2篇 |
| 2003年 | 1篇 |
| 2002年 | 1篇 |
| 2000年 | 1篇 |
| 1999年 | 1篇 |
| 1997年 | 2篇 |
| 1996年 | 4篇 |
| 1995年 | 2篇 |
| 1994年 | 2篇 |
| 1993年 | 3篇 |
| 1991年 | 1篇 |
| 1990年 | 5篇 |
| 1989年 | 5篇 |
| 1988年 | 1篇 |
| 1987年 | 2篇 |
| 1984年 | 2篇 |
| 1983年 | 3篇 |
| 1982年 | 2篇 |
| 1981年 | 1篇 |
| 1977年 | 3篇 |
| 1976年 | 4篇 |
| 1974年 | 1篇 |
| 1973年 | 1篇 |
| 1971年 | 1篇 |
排序方式： 共有57条查询结果，搜索用时 203 毫秒
11.
12.
13.
14.
The comparative pathogenicity of four serovars of Actinobacillus (Haemophilus) pleuropneumoniae 总被引：1，自引：0，他引：1
The pathogenicity of 2 isolates of each of serovars 7, 3, 1 and 2 of Actinobacillus pleuropneumoniae was tested by intranasal inoculation into 60, 6-week-old large white pigs. Four dose rates varying from 0.27 to 560 x 10(6) organisms per pig with 10-fold serial dilutions were used. Surviving pigs were necropsied 7 days after inoculation. The proportion of pigs dying and developing gross lesions following infection was significantly greater for pigs given serotype 1 than for each of the other 3 serotypes, which did not differ significantly from each other. Twelve of 16 pigs given either of the 2 isolates of serovar 1 died after acute illness and 1 of 44 pigs given either of the 2 isolates each of serovars 7, 3 and 2 died. Pigs given serovar 1 showed high temperatures, severe respiratory distress, frothy haemorrhagic nasal discharge and weight loss. Lung lesions were produced in all 16 pigs given serovar 1, in 7 of 14 pigs given serovar 7, 7 of 14 pigs receiving serovar 3 and in 5 of 16 pigs given serovar 2. The lethal infections were characterised by a severe acute fibrinohaemorrhagic necrotising pleuropneumonia, whereas non-lethal cases had lung lesions ranging from necrotising purulent pleuropneumonia to abscessation. Significant differences between isolates in proportions of tissues culture positive for A. pleuropneumoniae for serovars 7 and 2, but not for serovars 3 and 1 suggested that isolates may vary in virulence within serovars, but more detailed studies are needed to clarify this point. 相似文献
15.
16.
17.
18.
19.
20.