Immunological features in hairless descendants derived from Mexican hairless dogs.     

Y Hirota  N Koizumi  Y Matsubara  K Imamura  K Fukuta 《Nippon juigaku zasshi. The Japanese journal of veterinary science》1990,52(5):1117-1121

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Susceptibility of Mongolian gerbils (Meriones unguiculatus) to leptospires and the protective effect of vaccination   总被引：1，自引：0，他引：1  

M Yukawa  K Mochizuki  S Imamura 《Veterinary microbiology》1990,24(1):63-71

Mongolian gerbils, Meriones unguiculatus, were shown to be highly susceptible to Leptospira interrogans serovars such as icterohaemorrhagiae, copenhageni, canicola, autumnalis, javanica, pyrogenes and hebdomadis as compared to guinea pigs and hamsters. Mortality with signs of haemorrhage and jaundice was recorded in all experimental rodents after intraperitoneal inoculation with all strains of the serovars indicated. However, Mongolian gerbils were comparatively susceptible to strains which were of low virulence to guinea pigs and hamsters. Use of leptospiral vaccination proved effective in protecting the animals against inoculum challenges. The Mongolian gerbil is a species that may be selectively and preferentially useful for assays on the protective effects of leptospiral vaccination.  相似文献   

Botrytis blight of Taiwanese toad lily caused by Botrytis elliptica (Berkeley) Cooke     

Toshiko Furukawa  Kinji Ushiyama  Kunihei Kishi 《Journal of General Plant Pathology》2005,71(1):95-97

In June 1998, leaf spots caused by Botrytis elliptica (Berkeley) Cooke were found on Taiwanese toad lily (Tricyrtis formosana Bak.) in Kanagawa Prefecture, Japan. This is the first report on Botrytis blight of T. formosana caused by B. elliptica.  相似文献   

Estimation of genetic parameters of defective appearances in Japanese Black heifer calves in Kagoshima     

Hidemi Oyama  Kiyoto Imamura  Shinichi Sakamoto  Kazutaka Nishi  Kotaro Kawabe  Shin Okamoto  Takeshi Honda  Kenji Oyama  Takeshi Shimogiri 《Animal Science Journal》2020,91(1)

Defective appearances, including white spotting (WS), tongue defect (TD), and nipple defect (ND), in Japanese Black cattle potentially lead to economic losses to farmers in Japan. We estimated genetic parameters of defective appearances using 553,433 records of Japanese Black heifer calves housed in the Kagoshima Prefecture. Variance and covariance were estimated using the Gibbs sampling algorithm. The estimated heritability ranged from 0.29 for TD to 0.76 for WS. Percent breeding value (%BV) estimates indicated high variation in WS and ND among sires, reflecting higher heritability. Furthermore, there was a positive linear relationship between the %BV estimate of a sire and the mean incidence rate of each defect in his female offsprings. TD was positively associated with other defects. Therefore, genetic factors strongly affect the incidence of defective appearances in Japanese Black cattle.  相似文献   

A review of ghost fishing: scientific approaches to evaluation and solutions   总被引：2，自引：1，他引：2  

Tatsuro?MatsuokaEmail author  Toshiko?Nakashima  Naoki?Nagasawa 《Fisheries Science》2005,71(4):691-702

ABSTRACT:   Research on ghost fishing became active in the late 1980s. Ghost fishing has been confirmed for traps, gillnets, trammel-nets and small seine nets. Some lost traps are functional for a long period of time, even in shallow waters. Consequences for gillnets after loss depend on seabed conditions. The ghost fishing function of gillnets remaining on flat seabeds declines rapidly with decreasing heights and increasing visibility. Gillnets left tangled around an artificial reef, for example, three-dimensionally maintain the initial magnitude of ghost fishing for a long period of time, even after badly fouled. There are increasing numbers of researches working on the total number of mortality per gear after gear loss for gillnets and trammel-nets. It has become also possible to estimate the total number of mortality for a unit period of time in a certain fishing sector. This paper reviews research which has provided evidence and quantitative data on ghost fishing, and proposes five items important for future studies on ghost fishing.  相似文献   

Cell-mediated and humoral immune response to non-viable Mycoplasma pulmonis in mice enhanced by cross-linked ricin     

M Kishima  C Kuniyasu  M Eguchi  M Yamamoto  E Imamura 《Veterinary microbiology》1987,14(2):145-156

The enhancing effect of cross-linked ricin (CL-ricin) on the cell-mediated and humoral immune response of mice to non-viable Mycoplasma pulmonis was studied. The cell-mediated immune response was evaluated by means of the delayed-type footpad swelling, and the humoral immune response by means of the indirect hemagglutination test. Mice pre-treated subcutaneously with non-viable M. pulmonis and CL-ricin showed significantly increased delayed-type footpad swelling when they were injected in the footpad with the same antigen 7 days later. Delayed-type footpad swelling was not detected in mice pre-treated only with non-viable M. pulmonis or CL-ricin followed by footpad injection with non-viable M. pulmonis. Injection of non-viable M. pulmonis in the footpad on Days 3, 7, 14, 21, 28, 35 and 42 after pre-treatment with non-viable M. pulmonis and CL-ricin resulted in significant footpad swelling. Delayed-type footpad swelling was transferred by intravenous injection of spleen cells from mice which had been pre-treated 7 days previously with non-viable M. pulmonis and CL-ricin into non-treated recipient mice. Intravenous injection of anti-mouse thymus cell serum into mice previously pre-treated with non-viable M. pulmonis and CL-ricin reduced the delayed-type footpad swelling significantly. Mice pre-treated subcutaneously with non-viable M. pulmonis and CL-ricin showed a marked increase in serum antibody titers compared with those that received non-viable M. pulmonis alone.  相似文献   

Role of Starch Granules in Controlling Expansion of Dough During Baking     

Chiharu Kusunose  Toshiko Fujii  Hiroshi Matsumoto 《Cereal Chemistry》1999,76(6):920-924

The role of starch granules in the expansion of doughs during baking was investigated using artificial flours made from dry vital wheat gluten and wheat starch, potato starch, or tapioca starch. The three starches were selected because of their diverse gelatinization properties. Baking tests on flour from tapioca starch gave the largest loaf volume and the most extensive postbaking shrinkage. Potato starch flour gave the smallest volume and the least shrinkage. Amylograph test data, dough expansion under decreased pressure, progress of expansion during baking, and scanning electron microscopy revealed the role starch granules play in ideal baking conditions. Starch granules should not gelatinize early in the baking cycle as potato starch does but should gelatinize later in the baking cycle as wheat starch does. This prevents early setting of the dough which inhibits expansion. Starch granules should not disrupt and fuse together during gelatinization as tapioca starch does, forming an impermeable gas membrane. Granules should gelatinize individually as wheat starch does, causing a disruption of cell membranes which prevents shrinkage of the loaf during cooling after baking.  相似文献