排序方式: 共有37条查询结果,搜索用时 15 毫秒
1.
2.
Morioka K Fukai K Ohashi S Sakamoto K Tsuda T Yoshida K 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2008,70(7):653-658
At least two biotypes were observed at the 2nd passage stage after the isolation of Foot-and-mouth disease Virus (FMDV) O/JPN/2000 strain. These 2 types of viruses differed from their plaque phenotypes and were distinguishable by using a monoclonal antibody (MAb) 64G8 that was made for the FMDV O/JPN/2000 strain. One of these 2 biotypes formed small plaque (SP) and with immuno staining showed a positive reaction to MAb 64G8, while the other formed clear large plaque (LP) and did not react with MAb 64G8. The amino acid sequences of the capsid coding region (VP1-VP4) of the SP virus (SPV) and the LP virus (LPV) revealed two substitutions on the 133rd amino acid in VP2, and the 56th amino acid in VP3. These amino acid changes of SPV and LPV are Asn to Asp, Arg to His, respectively. The Arg of the 56th amino acid in VP3 that have been known as critical position of cell culture adapted virus. Only LPV showed high pathogenicity in suckling mice, and its LD(50) was calculated to be about 10(2) TCID(50)/0.1 ml. These results showed that the SPV that existed at the 2nd passage stage from isolation was a low virulence virus, which may suggest why the pathogenicity of O/JPN/2000 did not show clear symptoms in infected cattle. 相似文献
3.
Mitsuhiro Nakaya Taizo Morioka Kyouhei Fukunaga Naoto Murakami Takashi Ichikawa Sachio Sekiya Satoshi Suyama 《Fisheries Science》2010,76(1):45-53
This study details the growth and maturation processes of Pacific saury Cololabis saira from eggs to first spawning under laboratory conditions. They were reared at 20°C, and fed almost to satiation every day. There was no significant difference in the knob length (KnL) between males and females, and so data for both sexes were combined in the following Gompertz growth formula: KnL t = 277.1 exp[?exp(?0.015 (t ? 83.8))]. The first spawning was observed 243 days after hatching (DAH). At the beginning of spawning, when the mean KnL was about 250 mm, only several hundred eggs were spawned at most. The spawning continued, and the number of spawned eggs increased notably after 260 DAH. Correlation and stepwise multiple regression analysis of the gonad somatic index (GSI) of Pacific saury versus KnL, CF, and DAH revealed that only DAH (R = 0.88 and 0.72 for males and females, respectively) was significantly correlated with GSI of Pacific saury (P < 0.001). This result suggests that DAH is one of the most influential factors for maturation in this species. 相似文献
4.
Vongvichith Bounsong Morioka Shinsuke Sugita Tsuyoshi Phousavanh Nokjalia Phetsanghanh Norkeo Chanthasone Phonaphet Pommachan Phoutsamone Nakamura Satoshi 《Fisheries Science》2020,86(1):145-151
Fisheries Science - The growth of the climbing perch Anabas testudineus reared on lower protein feeds with the replacement of fishmeal (FM) by prepupae of the black soldier fly (BSF) Hermetia... 相似文献
5.
Morioka Shinsuke Vongvichith Bounsong Marui Junichiro Okutsu Tomoyuki Phomikong Pisit Avakul Piyathap Jutagate Tuantong 《Fisheries Science》2019,85(4):667-675
Fisheries Science - Growth and reproduction of the Thai river sprat Clupeichthys aesarnensis (Teleostei: Clupeidae) in Sirindhorn Reservoir, Thailand, and Nam Ngum Reservoir, Laos, were... 相似文献
6.
To investigate the setting condition of the gel-forming ability of rohu, optimum setting temperature for strong and weak gels of unwashed and washed rohu gel and optimum setting time for maximum proteolytic activity were investigated. Nine setting temperatures were studied for textural properties and trichloroacetic acid (TCA)-soluble peptide contents. Both unwashed gel (UW-gel) and washed gel (W-gel) showed similar optimum setting conditions for producing a strong gel that was set at 40°C for 30 min, followed by heating at 90°C for 20 min. They displayed different optimum setting conditions for weak gel. Weak gel from the degradation of UW-gel and W-gel formed at 65 and 60°C, respectively. The occurrence of protein degradation of W-gels during setting at 60°C suggested that washing did not remove the endogenous protease, and the degradation of unwashed and washed mince was due to water-soluble protease and myofibril-bound protease, respectively. Eight setting times for maximum proteolytic activity were shown by the TCA-soluble peptide contents, accompanying the sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) pattern. Both gels had similar results for setting for 120 min. 相似文献
7.
8.
Kanako Ishihara Toshio Takahashi Ayako Morioka Akemi Kojima Mayumi Kijima Tetsuo Asai Yutaka Tamura 《Acta veterinaria Scandinavica》2009,51(1):35
A total of 518 fecal samples collected from 183 apparently healthy cattle, 180 pigs and 155 broilers throughout Japan in 1999 were examined to determine the prevalence and antimicrobial susceptibility of Salmonella. The isolation rates were 36.1% in broilers, 2.8% in pigs and 0.5% in cattle. S. enterica Infantis was the most frequent isolate, found in 22.6% of broiler fecal samples. Higher resistance rates were observed against oxytetracycline (82.0%), dihydrostreptomycin (77.9%), kanamycin (41.0%) and trimethoprim (35.2%). Resistance rates to ampicillin, ceftiofur, bicozamycin, chloramphenicol and nalidixic acid were <10%. CTX-M-2 β-lactamase producing S. enterica Senftenberg was found in the isolates obtained from one broiler fecal sample. This is the first report of cephalosporin-resistant Salmonella directly isolated from food animal in Japan. 相似文献
9.
Harunao Nibe Naoki Suzuki Kazutaka Sakiyama Shinsuke Morioka Atsushi Ohno 《Fisheries Science》2010,76(3):473-480
The Goto station of the Japan Sea-Farming Association conducted marine ranching experiments with striped jack Pseudocaranx dentex from 1988 to 1999 in the Goto Islands, Nagasaki, Japan. Marine ranching is a stocking method where released fish are fed
for some period after release in order to decrease initial mortality from starvation. Ranched fish were fed for 0, 90, and
15 days after stocking in 1997, 1998, and 1999, respectively. During the experiment, herons (grey heron Ardea cinerea, black-crowned night heron Nycticorax nycticorax, and great egret Egretta alba) were often observed preying on released fish in the ranching area. The present study estimated the number of fish preyed
upon by herons during observation periods in 1997, 1998, and 1999 from the number of herons that flew into the ranching area
and the predation rate on ranched fish by herons. The former was counted during sightings. The latter was estimated from the
sighting observations and heron regurgitations. The number of herons that flew into the ranching area increased with the feeding
period. The numbers of fish lost to predation by herons in 1997, 1998, and 1999 were estimated to be 0, 5,741, and 829, respectively. 相似文献
10.
Dhirendra Prasad Thakur Katsuji Morioka Naoya Itoh Mizuho Wada Yoshiaki Itoh 《Fisheries Science》2009,75(6):1489-1498
The study was conducted to evaluate the meat texture, muscle proximate composition, lipid class composition, and collagen
content of cultured amberjack and to compare these parameters with those of the yellowtail. Our results showed that the meat
texture of cultured amberjack was tougher and had a lower degree of seasonality than that of cultured yellowtail. Muscle lipid
and collagen content also varied in the two fish species over the study period. Meat breaking strength was not correlated
with any of the muscle constituents, indicating that variations in the meat texture of cultured amberjack was not directly
influenced by the changes in the muscle biochemical constituents. 相似文献