全文获取类型
收费全文 | 239篇 |
免费 | 14篇 |
专业分类
林业 | 14篇 |
农学 | 2篇 |
基础科学 | 1篇 |
42篇 | |
综合类 | 9篇 |
农作物 | 9篇 |
水产渔业 | 30篇 |
畜牧兽医 | 130篇 |
园艺 | 1篇 |
植物保护 | 15篇 |
出版年
2023年 | 1篇 |
2022年 | 1篇 |
2021年 | 5篇 |
2020年 | 4篇 |
2019年 | 3篇 |
2018年 | 3篇 |
2017年 | 4篇 |
2016年 | 5篇 |
2015年 | 6篇 |
2014年 | 4篇 |
2013年 | 22篇 |
2012年 | 8篇 |
2011年 | 16篇 |
2010年 | 8篇 |
2009年 | 3篇 |
2008年 | 10篇 |
2007年 | 18篇 |
2006年 | 11篇 |
2005年 | 16篇 |
2004年 | 14篇 |
2003年 | 17篇 |
2002年 | 15篇 |
2001年 | 5篇 |
2000年 | 9篇 |
1999年 | 9篇 |
1998年 | 2篇 |
1997年 | 2篇 |
1993年 | 1篇 |
1992年 | 3篇 |
1991年 | 4篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1986年 | 1篇 |
1985年 | 2篇 |
1983年 | 1篇 |
1981年 | 1篇 |
1975年 | 1篇 |
1973年 | 5篇 |
1972年 | 1篇 |
1971年 | 3篇 |
1970年 | 1篇 |
1968年 | 3篇 |
1967年 | 1篇 |
1966年 | 2篇 |
排序方式: 共有253条查询结果,搜索用时 15 毫秒
111.
S Kojima A Shimada A Kodan K Kobayashi T Morita Y Yamano T Umemura 《Canadian journal of veterinary research》1998,62(2):148-151
We have isolated and determined the complete nucleotide sequence of canine metallothionein-III (MT-III) cDNA. The predicted amino acid sequence of the canine MT-III showed a high homology (93%, 87% identity) to that of human and mouse MT-III. The canine MT-III had 2 insertions relative to known mammalian MT-I and MT-II: a threonine after the 4th amino acid and a block of 6 amino acids near the carboxyl terminus. Expression of the canine MT-III mRNA was found exclusively in the central nervous system, where neurons in the olfactory bulb, hippocampus and cerebral cortex showed predominant signals. 相似文献
112.
113.
114.
Ito H Nara H Inoue-Murayama M Shimada MK Koshimura A Ueda Y Kitagawa H Takeuchi Y Mori Y Murayama Y Morita M Iwasaki T Ota K Tanabe Y Ito S 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2004,66(7):815-820
Various canine breeds are remarkably different from each other not only in their sizes and shapes but also in behavioral traits, suggesting that some of them are under genetic control. Although dopaminergic neurotransmission system is considered to affect animal behavior, little is known about related genes in canine. Relations between specific alleles in polymorphic regions of the dopamine receptor D4 gene (DRD4) and personality or psychiatric disorders have been reported in humans, and we first found polymorphism in exon III region of the gene in 4 canine breeds. In this study we surveyed allele frequency distribution in 23 breeds including a total of 1,535 unrelated individuals. In exon III, 8 alleles including a novel allele were identified. A group of breeds in which the alleles 447b, 498 and 549 were frequent tended toward high scores in aggression-related behavioral traits than that with frequent alleles 435 and 447a. Moreover, a polymorphism based on 24 bp insertion/deletion was found in exon I region for the first time in dogs. This information may be of use for candidate gene studies of behavioral variation in dogs. 相似文献
115.
Morita T Mizutani Y Michimae Y Sawada M Sato K Hikasa Y Shimada A 《Veterinary pathology》2004,41(4):442-445
This report describes a unique distribution of cerebral cortical necrotic lesion, which was diagnosed as hepatic encephalopathy in a 2-year-old Maltese dog. The dog showed splenocaval shunt and small liver with marked hepatocellular fatty degeneration. Histopathologic examination revealed that diffuse laminar cortical necrosis composed of neuronal necrosis, marked infiltration of gitter macrophages, and astrogliosis were found bilaterally in the dorsolateral area of the cerebrum. No necrotic lesions were observed in the cerebral paleopallium and archipallium, the central gray matter, cerebellum, and brain stem. Astrocytes with large and pale nuclei (Alzheimer type II astrocytes) were apparent throughout the brain. Immunohistochemically, a decrease of immunostains for glutamine synthetase and glutamate transporter antibodies was seen in Alzheimer type II astrocytes and neuropil. This is, to our knowledge, the first report of extensive involvement of cerebral neopallidum in canine hepatic encephalopathy. 相似文献
116.
117.
118.
H. Iwamoto Y. Fukumitsu M. Matsuzaki Y. Takemoto S. Morita H. Takahara 《British poultry science》1997,38(3):258-262
1. Histochemical properties of M. iliotibialis lateralis were compared between Kumamoto Cochin (a Japanese native breed) crossbred roasters (KC roasters, 112 d of age) and normal broilers (56 d of age).
2. Myofibres were divided into Types II‐R, II‐I and II‐W showing high, moderate and low reduced nicotinamide adenine dinucleotide dehydrogenase (NADH‐DH) activities, respectively.
3. Subsarcolemmal formazan granules indicating very strong NADH‐DH activity in Type II‐R fibres were observed only in KC roasters. In both sexes the percentage of Type II‐R fibres present was greater in KC roasters than in broilers.
4. These results indicated marked differences in histochemical properties and meat quality between KC roasters and broilers. 相似文献
119.
Nakamoto Y Ozawa T Katakabe K Nishiya K Mashita T Morita Y Yasuda N Ishii Y Nakaichi M Itamoto K 《Veterinary research communications》2008,32(8):609-617
Fibrocartilaginous embolism (FCE), a disorder of rapid onset featured by nonprogressive paralysis and paresis of four legs,
shows clinical symptoms very similar to those of other disorders, e.g., disk herniation. We examined 10 animals diagnosed
with FCE based on clinical symptoms and magnetic resonance imaging (MRI) findings in a retrospective study to examine the
relationship between onset-to-diagnosis/treatment initiation time and prognosis of FCE. Statistical procedures, including
Fisher’s exact probability test, were conducted. All animals in a group, in which the diagnosis was made and treatment was
initiated after an elapse of <15 days after onset, showed improved symptoms; the group showed a positive correlation (r = 0.76)
between “onset-to-symptom improvement time” and “onset-to-diagnosis/treatment initiation time”. Furthermore, the mean onset-to-diagnosis/
treatment initiation times were 2.67 days and 10.25 days in groups without and with sequelae, respectively; the time was significantly
(P < 0.02) shorter in the group without sequelae. A significant difference was found between the groups in early diagnosis and
treatment initiation. Our study indicates that the early precise diagnosis for acutely developed paralysis and paresis of
four legs through testings including MRI, as well as the early onset of their treatment are important to obtain a favorable
prognosis. 相似文献
120.
Kenichi Izumi Tatuya Tamura Ryoya Fujii Hiroki Nakatsuji Shigeru Morita 《Animal Science Journal》2019,90(2):205-213
The present study examined the effects of substituting kraft pulp (KP) with corn silage (CS) on dry matter intake (DMI), ruminal mat and rumen fermentation characteristics, and rumination. Four non‐lactating, rumen‐cannulated Holstein cows were fed a CS diet comprising 36% grass silage (GS) and 64% CS or a KP diet comprising 36% GS, 57% KP, and 7% soybean meal. DMI was significantly lower in cows fed the KP diet than in those fed the CS diet (p < 0.05), whereas rumination time did not significantly differ between the treatments. Dry matter content in the rumen immediately before and 3 h after feeding was significantly higher in cows fed the KP diet than in those fed the CS diet (p < 0.05). The consistency and thickness of the ruminal mat did not significantly differ between the treatments. The ruminal mean retention time of feed particles tended to be longer in cows fed the KP diet than in those fed the CS diet (p < 0.10). The ruminal digestion rate of KP was comparable to that of GS and CS. Because ruminal mat was formed and rumination was stimulated, KP was considered to have the equivalent physical effectiveness as CS. 相似文献