全文获取类型
收费全文 | 466篇 |
免费 | 50篇 |
专业分类
林业 | 27篇 |
农学 | 3篇 |
基础科学 | 1篇 |
32篇 | |
综合类 | 63篇 |
农作物 | 5篇 |
水产渔业 | 46篇 |
畜牧兽医 | 312篇 |
园艺 | 4篇 |
植物保护 | 23篇 |
出版年
2023年 | 6篇 |
2021年 | 7篇 |
2020年 | 18篇 |
2019年 | 14篇 |
2018年 | 19篇 |
2017年 | 13篇 |
2016年 | 12篇 |
2015年 | 8篇 |
2014年 | 11篇 |
2013年 | 24篇 |
2012年 | 18篇 |
2011年 | 17篇 |
2010年 | 14篇 |
2009年 | 11篇 |
2008年 | 20篇 |
2007年 | 12篇 |
2006年 | 16篇 |
2005年 | 17篇 |
2004年 | 14篇 |
2003年 | 19篇 |
2002年 | 14篇 |
2001年 | 21篇 |
2000年 | 8篇 |
1999年 | 10篇 |
1995年 | 3篇 |
1994年 | 5篇 |
1993年 | 8篇 |
1992年 | 11篇 |
1991年 | 15篇 |
1990年 | 8篇 |
1989年 | 10篇 |
1988年 | 7篇 |
1987年 | 7篇 |
1985年 | 5篇 |
1984年 | 3篇 |
1982年 | 3篇 |
1981年 | 5篇 |
1980年 | 5篇 |
1979年 | 11篇 |
1978年 | 5篇 |
1977年 | 3篇 |
1976年 | 4篇 |
1974年 | 3篇 |
1973年 | 5篇 |
1972年 | 4篇 |
1971年 | 3篇 |
1970年 | 5篇 |
1969年 | 3篇 |
1967年 | 4篇 |
1958年 | 3篇 |
排序方式: 共有516条查询结果,搜索用时 15 毫秒
61.
Therapeutic and prophylactic activity of dimetridazole against experimentally-transmitted swine dysentery 总被引:1,自引:0,他引:1
R M Griffin 《The Veterinary record》1972,91(15):349-353
62.
63.
R A Hall M Rappaport H K Hopkins R Griffin J Silvermann 《Science (New York, N.Y.)》1970,170(961):998-1000
Electroencephalographic averaged evoked responses to flashing lights of four different intensities were recorded in ten cats and correlated with behavior. Animals showing a high degree of exploratory behavior, aggressiveness, and activity and little withdrawal showed relatively large increases in amplitude of the averaged evoked response with increases of stimulus intensity. Those showing opposite behavioral traits had small increases or decreases of average evoked response amplitude with increases of stimulus intensity. These findings are compatible with those reported for human subjects. Inference is made about a neurophysiological mechanism for stimulus intensity modulation. 相似文献
64.
Canine plasma and erythrocyte response to a docosahexaenoic acid-enriched supplement: characterization and potential benefits 总被引:1,自引:0,他引:1
Filburn CR Griffin D 《Veterinary therapeutics : research in applied veterinary medicine》2005,6(1):29-42
Results of this study confirm that dietary supplementation in dogs with a natural source of omega-3 fatty acids (salmon oil), with a docosahexaenoic acid:eicosapentaenoic acid (DHA:EPA) ratio of 1.5:1, increases plasma and red blood cell levels of these fatty acids. Supplementation with this DHA-enriched oil improves the long-chain polyunsaturated fatty acid omega-6:omega-3 (n-6:n-3) ratio, which may benefit dogs of all ages. Studies describing some of the neurologic, renal, cardiovascular, immune, and musculoskeletal effects of elevated blood levels of n-3 fatty acids, especially DHA, are reviewed. The importance of providing an enriched source of DHA, instead of its shorter precursors, is emphasized. 相似文献
65.
Rush immunotherapy has been shown to be as safe as conventional immunotherapy in canine atopic patients. Rush immunotherapy has not been reported in the feline atopic patient. The purpose of this pilot study was to determine a safe protocol for rush immunotherapy in feline atopic patients. Four atopic cats diagnosed by history, physical examination and exclusion of appropriate differential diagnoses were included in the study. Allergens were identified via liquid phase immunoenzymatic testing (VARL: Veterinary Allergy Reference Labs, Pasadena, CA). Cats were premedicated with 1.5 mg triamcinolone orally 24 and 2 h prior to first injection and 10 mg hydroxyzine PO 24, 12 and 2 h prior to first injection. An intravenous catheter was placed prior to first injection. Allergen extracts (Greer Laboratories, Lenoir, North Carolina) were all administered subcutaneously at increasing protein nitrogen units (pnu) every 30 minutes for 5 h to maintenance dose of 15,000 pnus ml-1. Vital signs were assessed every 15 minutes. Two cats developed mild pruritus and the subsequent injection was delayed 30 minutes. No changes in either cat's vital signs were noted, nor was there any further pruritus. All four cats successfully completed rush immunotherapy. Two cats developed a dermal swelling on the dorsal neck one week later. In these four cats, this protocol appeared to be a safe regimen to reach maintenance therapy. A larger sample of feline patients is needed to determine the incidence of adverse reactions and to follow the success of ASIT based upon this method of induction. 相似文献
66.
67.
Mendelsohn CL Griffin CE Rosenkrantz WS Brown LD Boord MJ 《Journal of the American Animal Hospital Association》2005,41(1):12-21
The purpose of this 2-week, double-blinded, controlled clinical trial was to evaluate the efficacy of topical amino acid-complexed zinc gluconate formulated with boric acid (ZGB) or acetic acid (ZGA) versus a topical placebo in the treatment of yeast otitis externa in dogs. Included in the study were dogs with otitis externa and a cytopathological finding of yeast organisms in the affected ear. Ears were treated with the placebo, ZGA, or ZGB medications. Yeast counts as well as clinical appearance of the ears were monitored. Results revealed that ZGB significantly reduced the number of yeast organisms in cases of otitis externa. 相似文献
68.
69.
70.
Griffies JD Mendelsohn CL Rosenkrantz WS Muse R Boord MJ Griffin CE 《Journal of the American Animal Hospital Association》2004,40(1):29-41
Topical 0.1% tacrolimus was used for treatment of localized lesions associated with 10 cases of discoid lupus erythematosus (DLE) and two cases of pemphigus erythematosus (PE) either as a sole therapy (n=2) or as an adjunctive treatment (n=10). Eight of 10 dogs with DLE and both dogs with PE were improved following 8 weeks of topical application. In six of the eight dogs that improved, other medications were discontinued. No adverse effects in clinical or laboratory parameters were noted throughout the study. 相似文献