全文获取类型
| 收费全文 | 207篇 |
| 免费 | 26篇 |
专业分类
| 林业 | 13篇 |
| 农学 | 18篇 |
| 基础科学 | 3篇 |
| 31篇 | |
| 综合类 | 19篇 |
| 农作物 | 11篇 |
| 水产渔业 | 19篇 |
| 畜牧兽医 | 106篇 |
| 园艺 | 6篇 |
| 植物保护 | 7篇 |
出版年
| 2021年 | 2篇 |
| 2020年 | 5篇 |
| 2019年 | 6篇 |
| 2018年 | 7篇 |
| 2017年 | 5篇 |
| 2016年 | 6篇 |
| 2015年 | 3篇 |
| 2014年 | 3篇 |
| 2013年 | 9篇 |
| 2012年 | 6篇 |
| 2011年 | 6篇 |
| 2010年 | 11篇 |
| 2009年 | 10篇 |
| 2008年 | 7篇 |
| 2007年 | 9篇 |
| 2006年 | 11篇 |
| 2005年 | 3篇 |
| 2004年 | 17篇 |
| 2003年 | 10篇 |
| 2002年 | 7篇 |
| 2000年 | 3篇 |
| 1999年 | 4篇 |
| 1998年 | 4篇 |
| 1997年 | 2篇 |
| 1995年 | 5篇 |
| 1993年 | 2篇 |
| 1992年 | 5篇 |
| 1991年 | 6篇 |
| 1990年 | 3篇 |
| 1989年 | 3篇 |
| 1988年 | 4篇 |
| 1987年 | 4篇 |
| 1986年 | 7篇 |
| 1985年 | 2篇 |
| 1984年 | 2篇 |
| 1982年 | 2篇 |
| 1981年 | 2篇 |
| 1979年 | 3篇 |
| 1975年 | 2篇 |
| 1974年 | 4篇 |
| 1973年 | 2篇 |
| 1972年 | 2篇 |
| 1971年 | 1篇 |
| 1970年 | 2篇 |
| 1968年 | 1篇 |
| 1967年 | 1篇 |
| 1966年 | 1篇 |
| 1965年 | 1篇 |
| 1964年 | 2篇 |
| 1958年 | 2篇 |
排序方式： 共有233条查询结果，搜索用时 203 毫秒
1.
根据美国伊阿华州养猪业记录系统的数据,是猪场管理的好坏,而非猪场规模的大小,造成了猪场盈利与否的差别,而且这一差别是非常显著的. 相似文献
2.
3.
4.
5.
Mary Jo Burkhard Dennis J. Meyer Rod A. Rosychuk Shawn P. O'Neil Patricia C. Schultheiss 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》1995,9(5):357-360
A monoclonal gammopathy composed of immunoglobulin G, with concurrent light-chain proteinuria and generalized lymph node plasmacytosis, was associated with chronic pyoderma in a dog. A uniform population of plasma cells was observed cytologically and histologically in multiple lymph node specimens. A diagnosis of monoclonal gammopathy of unknown significance was eventually made by exclusion of other known causes of monoclonal gammopathy, resolution after antibiotic therapy, and no evidence of lymphoproliferative disease after 11 months of follow-up and subsequent necropsy. This report expands the diagnostic considerations for monoclonal gammopathies in the dog. 相似文献
6.
THE BOVINE MUCOSAL DISEASE-SWINE FEVER VIRUS COMPLEX IN PIGS 总被引：2，自引：0，他引：2
7.
8.
Lascelles BD Thomson MJ Dernell WS Straw RC Lafferty M Withrow SJ 《Journal of the American Animal Hospital Association》2003,39(3):294-305
This paper describes in detail a combined dorsal and intraoral approach for maxillectomy for tumors involving tissues more caudal to the third premolar. The only intraoperative complication was that of blood loss, with six out of 20 dogs requiring a single unit of blood. Histopathologically clean margins were obtained in 14 of the 20 cases, with a recurrence rate of 50% in these dogs and a median time to recurrence of 24 months. This represents an improvement in outcome over previously reported studies, and the authors postulate this is due to the better exposure and access to the area afforded by the combined approach over the standard intraoral approach. 相似文献
9.
Deborah S. Greco Rod A.W. Rosychuk Gregory K. Ogilvie Lynn M. Harpold Camilla H. Van Liew 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》1998,12(1):7-10
Thirty adult, client-owned dogs were diagnosed with hypothyroidism based on history, physical examination findings, hematologic and biochemical abnormalities, thyrotropin (TSH) response testing, endogenous canine thyrotropin (cTSH) concentration, or both, and total serum thryoxine concentration. All dogs received levothyroxine (L-thyroxine) at an initial dose of 22 μg/kg PO sid in either a tablet (13 dogs) or chewable form (17 dogs). Energy expenditure of each dog during apparent rest was estimated with an open-flow indirect calorimetry system by determining the rates of carbon dioxide production and oxygen consumption. Energy expenditure of apparent rest (EE) was lower in untreated hypothyroid dogs compared with reference values for EE. After treatment with L-thyroxine, EE of the hypothyroid dogs was significantly ( P < .05) higher than pretreatment values. 相似文献
10.