全文获取类型
收费全文 | 195篇 |
免费 | 1篇 |
国内免费 | 2篇 |
专业分类
林业 | 20篇 |
农学 | 5篇 |
10篇 | |
综合类 | 1篇 |
农作物 | 7篇 |
水产渔业 | 13篇 |
畜牧兽医 | 132篇 |
植物保护 | 10篇 |
出版年
2022年 | 12篇 |
2021年 | 21篇 |
2018年 | 1篇 |
2017年 | 1篇 |
2016年 | 4篇 |
2015年 | 18篇 |
2014年 | 13篇 |
2013年 | 10篇 |
2012年 | 8篇 |
2011年 | 11篇 |
2010年 | 13篇 |
2009年 | 11篇 |
2008年 | 9篇 |
2007年 | 9篇 |
2006年 | 15篇 |
2005年 | 6篇 |
2004年 | 13篇 |
2003年 | 8篇 |
2002年 | 7篇 |
2001年 | 4篇 |
1999年 | 2篇 |
1997年 | 1篇 |
1993年 | 1篇 |
排序方式: 共有198条查询结果,搜索用时 0 毫秒
1.
A questionnaire study examining Japanese consumers’ requirements for beef quality was carried out in April 2002 in Tsukuba, Ibaraki, Japan. Answers from 532 participants were used for the statistical analysis. Twenty questions about sensory properties, appearance, safety and freshness, production area, price, and other properties were prepared. The answers were applied to principal component analysis. Five principal components were obtained and defined, and the principle component scores were used to classify participants. The panels were classified into four groups profiled as ‘specific quality orientated’, ‘Wagyu (Japanese beef) orientated’, ‘safety and freshness orientated’ and ‘overall high quality orientated’. In addition, gender and age characteristics were different among the groups. Sensory properties did not affect the classification of respondents. 相似文献
2.
Yoshimasa SASAKI Taketoshi IWATA Masashi UEMA Kenzo YONEMITSU Shizunobu IGIMI Hiroshi ASAKURA 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2022,84(6):743
Chicken is a major source of human campylobacteriosis. Chicken meat originates not only from broilers but also from spent layers; however, few reports have documented the prevalence and antimicrobial resistance of Campylobacter spp. in layers in Japan. Therefore, we investigated the prevalence and antimicrobial susceptibility of Campylobacter spp. in 47 layer farms in Japan. Fecal samples were collected from the youngest and oldest flocks on the farm, and Campylobacter spp. was isolated from 46/47 (97.9%) farms. Among the C. jejuni isolates, the resistance rates to ampicillin, tetracycline, and ciprofloxacin were 29.6%, 22.2%, and 19.8%, respectively. The ciprofloxacin resistance rate (7.3%) in C. jejuni isolated from old flocks was significantly (P<0.01) lower than that in young flocks (32.5%). 相似文献
3.
Toshiyuki Takai Patrick Lumanglas Daisuke Fujita Kazuhiro Sasaki Njato Michael Rakotoarisoa Yasuhiro Tsujimoto Nobuya Kobayashi Eliza Vie Simon 《Breeding Science》2021,71(5):615
The heading date is an important trait for determining regional and climatic adaptability in rice. To expand the adaptability of the indica rice cultivar ‘IR64’, we pyramided multiple early or late heading quantitative trait locus (QTLs) in the ‘IR64’ genetic background by crossing previously developed near-isogenic lines (NILs) with a single QTL for early or late heading. The effects of pyramiding QTLs were observed in three different climatic zones of the Philippines, Madagascar, and Japan. The early heading pyramiding lines (PYLs) headed 6.2 to 12.8 days earlier than ‘IR64’ while the late heading PYLs headed 18.8 to 27.1 days later than ‘IR64’. The PYLs tended to produce low grain yield compared to ‘IR64’. The low yield was not improved by combining SPIKE, which is a QTL that increases the number of spikelets per panicle. Conversely, ‘IR64-PYL(7+10)’ carrying Hd5 and Hd1 headed earlier, produced more tillers, and more panicles per m2 than ‘IR64’, and mitigated the yield decrease in early heading. These results suggest that the effects of pyramided QTLs on heading date were consistent across various environments and PYLs could be used to enhance the adaptation of ‘IR64’ in other rice growing environments. 相似文献
4.
Yosuke SASAKI Satoshi SEKIGUCHI Ryoko UEMURA Masuo SUEYOSHI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2016,78(2):333-335
This study compared the reproductive and growth performances of pigs before and after depopulation andrestocking after a foot-and-mouth disease outbreak in Japan. Data for the time period before and afterdepopulation and restocking were obtained from three farrow-to-finish farms. As a result of depopulation andrestocking, hygiene levels were improved, and common infectious diseases, such as porcine reproductive andrespiratory syndrome and Aujeszky’s disease, remained undetected on the farms. Compared with beforedepopulation, reproductive and growth performances improved after depopulation; the number of total pigs bornwas higher, the postweaning mortality rate was lower, and the age at slaughter was lower(P<0.05). In summary, depopulation and restocking improved the reproductive and growthperformances of pigs. 相似文献
5.
Kazuki HARADA Atsushi SASAKI Takae SHIMIZU 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2016,78(1):83-89
The study objective was to determine the effect of oral orbifloxacin (ORB) onantimicrobial susceptibility and composition of fecal coliforms in cats. Nine cats wererandomized to two groups administered a daily oral dose of 2.5 and 5.0 mg ORB/kg for 7days and a control group (three cats per group). Coliforms were isolated from stoolsamples and were tested for susceptibilities to ORB and 5 other drugs. ORB concentrationin feces was measured using high-performance liquid chromatography (HPLC). The coliformswere undetectable after 2 days of ORB administration, and their number increased in mostcats after termination of the administration. Furthermore, only isolates ofEscherichia coli were detected in all cats before administration, andthose of Citrobacter freundii were detected after termination of theadministration. E. coli isolates exhibited high ORB susceptibility[Minimum inhibitory concentration (MIC), ≤0.125 µg/ml]or relatively low susceptibility (MIC, 1−2 µg/ml) with asingle gyrA mutation. C. freundii isolates largelyexhibited intermediate ORB susceptibility (MIC, 4µg/ml), in addition to resistance to ampicillin andcefazolin, and harbored qnrB, but not a gyrA mutation.HPLC revealed that the peaks of mean concentration were 61.3 and 141.0µg/g in groups receiving 2.5 and 5.0 mg/kg, respectively. Our findingssuggest that oral ORB may alter the total counts and composition of fecal coliform, but isunlikely to yield highly fluoroquinolone-resistant mutants of E. coli andC. freundii in cats, possibly because of the high drug concentration infeces. 相似文献
6.
7.
We examined the contribution of rubberwood to the timber export markets of Malaysia and Thailand. In Malaysia, rubberwood
has grown from 26% of total exported wood products in 1998 to 35% in 2007. A high proportion of furniture products (80%) is
rubberwood, whereas the contribution of rubberwood to other wooden products is less than 20%. Only 10% of sawn timber and
logs is rubberwood. In Thailand, rubberwood contributes to around 60% of total exported wood products, arising from a high
share of not only furniture products (70%) but also other wood products (around 50%) and sawn timber and logs, which have
increased in share from 40% in 1998 to 79% in 2007. We conclude that the high proportion of rubberwood products in the wood
export markets of these two countries is a result of: (1) scarcity of raw wood materials because of strict controls on the
logging of natural forests; and (2) governmental support to rubberwood production, including financial support to rubber planters
and technical assistance to downstream timber processors. 相似文献
8.
Naoki SASAKI Yoshinori MORITA Tomoe MORIYAMA Haruo YAMADA 《Journal of Equine Science》2009,20(2):19-22
The purpose of this study was to evaluate the effect of the canine cranial cruciate
ligament repair system on laryngeal hemiplegia in heavy draft horses. Twenty-four heavy
draft horses diagnosed with grade 4 laryngeal hemiplegia were allocated to either the
prosthetic laryngoplasty (PL) group (n=14) or a canine cranial cruciate ligament repair
system (CCCLRS) group (n=10). Right to left angle quotients (RLQs) of abductions of the
arytenoid cartilages were endoscopically evaluated before and after surgery.
Post-operative RLQs in the CCCLRS group were significantly lower than those of the PL
group (P<0.01). The canine cranial cruciate ligament repair system was revealed to be a
good surgical procedure for laryngeal hemiplegia in heavy draft horses. 相似文献
9.
Tsuyoshi Kajisa Takuhiko Murakami Nobuya Mizoue Shigejiro Yoshida 《Journal of Forest Research》2007,12(6):435-441
Our objective was to investigate the differences in the spectral trajectory of the LANDSAT Thematic Mapper with stand volume
development between Japanese larch (Larix kaempferi) and Japanese oak (Quercus mongolica var. crispula) in the experimental forest of Kyushu University, Hokkaido, Japan. We used nonlinear regression and a categorical variable
to investigate the relationship between spectral reflectance factor and stand volume for each forest type. This research showed
that the reflectance factor of Japanese larch and Japanese oak reached saturation and that both forest types had different
spectral trajectories with stand development. In addition, we found that middle of development stage (stand volume was between
100 and 200 m3/ha) of each forest type had similarity in reflectance factor. 相似文献
10.
Bhuminad DEVKOTA Masahiro TAKAHASHI Saori SATO Kouya SASAKI Atsushi UEKI Takeshi OSAWA Masahiro TAKAHASHI Norio YAMAGISHI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2015,77(7):875-878
Blood samples were obtained sequentially from 10 dairy cows around the time of
parturition to assess plasma fluctuations in estradiol-17β (E2) levels in
association with those of several bone resorption markers. Plasma E2
concentration increased sharply a few days prepartum and decreased quickly after
parturition. In terms of bone resorption markers, the plasma level of tartrate-resistant
acid phosphatase isoform 5b (TRAP5b) rose significantly, commencing 1 week prepartum, and
was maintained at this level to a few days postpartum. The plasma concentration of
carboxyterminal collagen cross-links of type-I collagen (CTx) increased significantly
after parturition. These observations suggest that osteoclast-mediated bone resorption was
activated after parturition when plasma E2 concentrations decreased. 相似文献