全文获取类型
| 收费全文 | 445篇 |
| 免费 | 50篇 |
| 国内免费 | 1篇 |
专业分类
| 林业 | 6篇 |
| 农学 | 4篇 |
| 36篇 | |
| 综合类 | 41篇 |
| 农作物 | 2篇 |
| 水产渔业 | 7篇 |
| 畜牧兽医 | 385篇 |
| 园艺 | 3篇 |
| 植物保护 | 12篇 |
出版年
| 2020年 | 6篇 |
| 2019年 | 4篇 |
| 2018年 | 7篇 |
| 2017年 | 9篇 |
| 2016年 | 9篇 |
| 2015年 | 12篇 |
| 2014年 | 12篇 |
| 2013年 | 26篇 |
| 2012年 | 11篇 |
| 2011年 | 11篇 |
| 2010年 | 11篇 |
| 2009年 | 12篇 |
| 2008年 | 6篇 |
| 2007年 | 12篇 |
| 2006年 | 9篇 |
| 2005年 | 12篇 |
| 2004年 | 7篇 |
| 2003年 | 8篇 |
| 2002年 | 8篇 |
| 2001年 | 22篇 |
| 2000年 | 6篇 |
| 1999年 | 9篇 |
| 1998年 | 19篇 |
| 1997年 | 19篇 |
| 1996年 | 15篇 |
| 1995年 | 16篇 |
| 1994年 | 11篇 |
| 1993年 | 13篇 |
| 1992年 | 13篇 |
| 1991年 | 20篇 |
| 1990年 | 17篇 |
| 1989年 | 20篇 |
| 1988年 | 13篇 |
| 1987年 | 7篇 |
| 1986年 | 4篇 |
| 1985年 | 3篇 |
| 1984年 | 7篇 |
| 1983年 | 6篇 |
| 1982年 | 5篇 |
| 1981年 | 4篇 |
| 1980年 | 4篇 |
| 1979年 | 8篇 |
| 1978年 | 5篇 |
| 1977年 | 6篇 |
| 1975年 | 4篇 |
| 1974年 | 6篇 |
| 1973年 | 4篇 |
| 1971年 | 3篇 |
| 1970年 | 2篇 |
| 1966年 | 2篇 |
排序方式： 共有496条查询结果，搜索用时 15 毫秒
1.
2.
Haematological and biochemical investigations were performed on 14 koalas with uncomplicated cystitis, 8 with complicated cystitis, 8 with conjunctivitis, 8 with lymphosarcoma, and 14 with miscellaneous diseases. Changes were limited and inconsistent in individual koalas with uncomplicated cystitis and conjunctivitis. In contrast, individual koalas with complicated cystitis were more likely to have anaemia, leukocytosis due to neutrophilia, hypoproteinaemia due to hypoalbuminaemia, and azotaemia due to elevated urea concentration. Although these changes were non-specific they did allow assessment of prognosis for survival and response to treatment. Koalas with lymphosarcoma were invariably anaemic, leukaemic, azotaemic and hypoalbuminaemic. Elevated enzymes (aspartate transaminase [AST]. lactate dehydrogenase [LD] and gamma glutamyl transferase [GGT]) were more common in koalas with lymphosarcoma. Koalas affected by miscellaneous conditions showed variable changes but once again anaemia, leukocytosis, azotaemia, elevated AST and LD, and hypoalbuminaemia were not uncommon. On the basis of these findings a minimal profile is suggested for the investigation of sick koalas and would include haematocrit, total and differential leukocyte counts, urea, total protein and albumin concentrations and AST, GGT and LD activities. 相似文献
3.
4.
Guttural pouch hemorrhage associated with lesions of the maxillary artery in two horses 总被引：2，自引：2，他引：0 
下载免费PDF全文
下载免费PDF全文 Smith KM Barber SM 《The Canadian veterinary journal. La revue veterinaire canadienne》1984,25(6):239-242
A two year old Thoroughbred gelding, presented with guttural pouch hemorrhage, had the internal and external carotid arteries ligated. Guttural pouch mycosis was detected on endoscopic examination. After one month of topical antifungal therapy, the horse was returned and euthanized because of recurrent epistaxis. A bacterial infection of the guttural pouch with associated ulceration and hemorrhage from the maxillary artery was found at necropsy.
A two year old grade gelding had ulceration and hemorrhage from the external carotid artery. Utilizing balloon-tipped catheters and arterial ligation, hemestasis was achieved in the internal carotid artery and the external carotid artery and its branches. Mycotic ulceration of the internal carotid artery was detected endoscopically and treated with local antifungal therapy for one month. Thirty-three days postoperatively the horse returned, bleeding from a lesion in the maxillary artery. The rationale for surgical intervention to prevent epistaxis associated with guttural pouch mycosis and possible etiologies for postsurgical epistaxis are discussed.
相似文献5.
Barber SM McLaughlin BG Fretz PB 《The Canadian veterinary journal. La revue veterinaire canadienne》1983,24(2):46-49
A one month old Quarterhorse colt was presented after a week history of bilateral nasal discharge and respiratory difficulty. The cervical esophagus was greatly dilated, tortuous and filled with diluted milk. A nasogastric tube could not be passed beyond the base of the heart. An aspiration pneumonia was found at postmortem examination and the esophageal segment from the pharynx to the base of the heart was dilated, thin-walled, had degenerative muscular changes, and a reduction in size and number of ganglion cells of the myenteric plexus. Muscular hypertrophy of the terminal esophagus had reduced its lumen size. Some similarities and disparities of this condition to achalasia of man and megaesophagus of dogs are discussed. 相似文献
6.
7.
8.
9.
Profile of Steroid Receptors and Increased Aromatase Immunoexpression in Canine Inflammatory Mammary Cancer as a Potential Therapeutic Target 下载免费PDF全文
下载免费PDF全文 PJ De Andrés S Cáceres M Clemente MD Pérez‐Alenza JC Illera L Peña 《Reproduction in domestic animals》2016,51(2):269-275
Canine inflammatory mammary cancer (IMC) has been proposed as a model for the study of human inflammatory breast cancer (IBC). The aims of this study were to compare the immunohistochemical expression of aromatase (Arom) and several hormone receptors [estrogen receptor α (ERα), estrogen receptor β (ERβ), progesterone receptor (PR) and androgen receptor (AR)], in 21 IMC cases vs 19 non‐IMC; and to study the possible effect of letrozole on canine IMC and human inflammatory breast cancer (IBC) in vitro using IPC‐366 and SUM‐149 cell lines. Significant elevations of the means of Arom Total Score (TS), ERβ TS and PR TS were found in the IMC group (p = 0.025, p = 0.038 and p = 0.037, respectively). Secondary IMC tumours expressed higher levels of Arom than primary IMC (p = 0.029). Non‐IMC PR‐ tumours contained higher levels of Arom than non‐IMC PR+ tumours (p = 0.007). After the addition of letrozole, the number of IMC and IBC cells dropped drastically. The overexpression of Arom found and the results obtained in vitro further support canine IMC as a model for the study of IBC and future approaches to the treatment of dogs with mammary cancer, and especially IMC, using Arom inhibitors. 相似文献
10.