全文获取类型
收费全文 | 506篇 |
免费 | 28篇 |
专业分类
林业 | 51篇 |
农学 | 18篇 |
基础科学 | 1篇 |
72篇 | |
综合类 | 22篇 |
农作物 | 16篇 |
水产渔业 | 46篇 |
畜牧兽医 | 280篇 |
园艺 | 5篇 |
植物保护 | 23篇 |
出版年
2023年 | 1篇 |
2022年 | 7篇 |
2021年 | 23篇 |
2020年 | 17篇 |
2019年 | 15篇 |
2018年 | 14篇 |
2017年 | 11篇 |
2016年 | 12篇 |
2015年 | 30篇 |
2014年 | 26篇 |
2013年 | 36篇 |
2012年 | 38篇 |
2011年 | 47篇 |
2010年 | 15篇 |
2009年 | 18篇 |
2008年 | 31篇 |
2007年 | 29篇 |
2006年 | 33篇 |
2005年 | 15篇 |
2004年 | 23篇 |
2003年 | 22篇 |
2002年 | 13篇 |
2001年 | 15篇 |
2000年 | 8篇 |
1999年 | 2篇 |
1997年 | 1篇 |
1996年 | 2篇 |
1993年 | 1篇 |
1992年 | 2篇 |
1991年 | 5篇 |
1990年 | 2篇 |
1989年 | 4篇 |
1988年 | 4篇 |
1987年 | 3篇 |
1986年 | 2篇 |
1985年 | 3篇 |
1978年 | 1篇 |
1976年 | 1篇 |
1969年 | 1篇 |
1968年 | 1篇 |
排序方式: 共有534条查询结果,搜索用时 15 毫秒
531.
Shimoda H Tanaka J Kikuchi M Fukuda T Ito H Hatano T Yoshida T 《Journal of agricultural and food chemistry》2008,56(12):4444-4449
The polyphenol-rich fraction (WP, 45% polyphenol) prepared from the kernel pellicles of walnuts was assessed for its hepatoprotective effect in mice. A single oral administration of WP (200 mg/kg) significantly suppressed serum glutamic oxaloacetic transaminase (GOT) and glutamic pyruvic transaminase (GPT) elevation in liver injury induced by carbon tetrachloride (CCl 4), while it did not suppress d-galactosamine (GalN)-induced liver injury. In order to identify the active principles in WP, we examined individual constituents for the protective effect on cell damage induced by CCl 4 and d-GalN in primary cultured rat hepatocytes. WP was effective against both CCl 4- and d-GalN-induced hepatocyte damages. Among the constituents, only ellagitannins with a galloylated glucopyranose core, such as tellimagrandins I, II, and rugosin C, suppressed CCl 4-induced hepatocyte damage significantly. Most of the ellagitannins including tellimagrandin I and 2,3- O-hexahydroxydiphenoylglucose exhibited remarkable inhibitory effect against d-GalN-induced damage. Telliamgrandin I especially completely suppressed both CCl 4- and d-GalN-induced cell damage, and thus is likely the principal constituent for the hepatoprotective effect of WP. 相似文献
532.
533.
Genomic evaluation using SNP‐ and haplotype‐based genomic relationship matrices in a closed line of Duroc pigs
下载免费PDF全文
![点击此处可从《Animal Science Journal》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Yoshinobu Uemoto Shuji Sato Takashi Kikuchi Sachiko Egawa Kimiko Kohira Hironori Sakuma Satoshi Miyashita Shinji Arata Takatoshi Kojima Keiichi Suzuki 《Animal Science Journal》2017,88(10):1465-1474
A simulation analysis and real phenotype analysis were performed to evaluate the impact of three different relationship matrices on heritability estimation and prediction accuracy in a closed‐line breeding of Duroc pigs. The numerator relationship matrix (NRM), single nucleotide polymorphism (SNP)‐based genomic relationship matrix (GRM) (GS), and haplotype‐based GRM (GH) were applied in this study. We used PorcineSNP60 genotype array data (38 114 SNPs) of 831 Duroc pigs with four selection traits. In both heritability estimation and prediction accuracy, the accuracy depended on the number of animals with records. For heritability estimation, a large difference in the results among three relationship matrices was not shown, but the trend of the estimated heritabilities between GRMs, that is GS < GH, was shown in this population. For the accuracy of prediction values in test animals, the accuracies of prediction values obtained by two GRMs were higher than that by the NRM in this population. The accuracies obtained by GRMs using animals with no records were lower than that by the NRM using animals with their performance records, but were close to that by the NRM using animals with full‐sib testing records. 相似文献
534.
A survey of K. pneumoniae was performed on cervical swabs, feces and nasal swabs of mares and on samples from the genital tract of stallions from 1980 to 1986 in south-western Hokkaido, Japan. K1 was the predominant type (79 of 88, 89.8%) in the metritis cases due to K. pneumoniae in mares of racing breeds. The same type was isolated from semen and swabs of the fossa glandis of 6 of 20 (30.0%) of the stallions of racing breeds. Heavily encapsulated and less heavily encapsulated K1 strains were isolated from the stallions. Mares bred to stallions carrying heavily encapsulated strains developed metritis, while those bred to stallions carrying less heavily encapsulated strains did not. K39 was isolated from cervical swabs solely from metritis-infected mares of draft breeds and not from any mares of the racing breeds examined. Untypable strains were isolated from cervical swabs in 7 of 88 (8.0%) metritis cases of mares of racing breeds and from semen in 7 of 19 (36.8%) stallions of racing breeds and they were predominant in feces (19 of 21, 90.5%) and nasal swabs (3 of 4, 75.0%) of healthy mares of racing breeds. 相似文献