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排序方式: 共有143条查询结果,搜索用时 156 毫秒
91.
Mizuna Ogino Akihiro Matsuura Atusi Yamazaki Mami Irimajiri Shiro Kushibiki Hiroyuki Shingu Etsuko Kasuya Yoshihisa Hasegawa Koichi Hodate 《Animal Science Journal》2013,84(3):253-257
The purpose of the present study was to investigate the secretion cycles of melatonin (MEL) in cattle over the course of four seasons. Four female Japanese Shorthorn cattle under free‐stall and ad libitum feeding conditions were used, and plasma MEL concentrations were measured over a 48 h period at 1 h intervals. The time‐series data were analyzed by spectral analysis, and the cycle hour was determined. Data indicated that the secretion cycle for MEL was approximately 23.5 h for all four seasons. The area under the curve of MEL from start to end of experiment for 48 h did not differ significantly among the four seasons. However, the duration of high MEL secretion which defined the duration time of the values were more than 10 pg/mL and differed significantly among the four seasons. In conclusion, this study, which was the first to use spectral analysis to evaluate the cyclic rhythm of MEL in cattle, revealed that MEL secretion cycles did not differ among the seasons. These findings are inconsistent with previous study results in that previous reports suggested that the MEL secretion cycle differed under different lighting conditions. 相似文献
92.
Konosuke OTOMARU Yuki NAOI Kei HAGA Tsutomu OMATSU Takehiko UTO Motoya KOIZUMI Tsuneyuki MASUDA Hiroshi YAMASATO Hikaru TAKAI Hiroshi AOKI Shinobu TSUCHIAKA Kaori SANO Sachiko OKAZAKI Yukie KATAYAMA Mami OBA Tetsuya FURUYA Junsuke SHIRAI Kazuhiko KATAYAMA Tetsuya MIZUTANI Makoto NAGAI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2016,78(2):321-324
During surveillance for bovine diarrhea of unknown causes in Japanese black cattle in Kagoshima Prefecture,
Japan, we found two types of novel kobu-like viruses in fecal samples of calves. Sequence analyses revealed
that they had L protein and 2A protein with H-box/NC sequence motif, which are present in kobuviruses.
Phylogenetic analysis revealed that they were related to kobuviruses; however, they clustered apart from other
kobuviruses. In the prevalence study of two types of novel kobu-like viruses, 16.9% and 10.4% prevalence of
these viruses were observed in the feces of diarrheal calves in this area. 相似文献
93.
Murakami M Sakai H Mizutani K Yanai T 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2011,73(11):1501-1504
A mass was located in the small intestine of a slaughtered 6-month-old male Landrace-cross pig that had no clinical abnormalities. This egg-shaped well-circumscribed mass was situated in the submucosal and muscular tissue layers and protruded into the lumen. Histopathologically, the tumor comprised discrete or aggregated ganglion and schwannian cells in neuropil-like tissue. Some ganglion cells contained Nissl substance in their cytoplasm. The ganglion cells stained positive for neuron-specific enolase, class III β-tubulin, neurofilament, and synaptophysin; the schwannian cells stained positive for vimentin, S-100 protein, and glial fibrillary acidic protein. The tumor was diagnosed as a ganglioneuroma in accordance with these findings. Here, we have reported detailed immunohistochemical findings in addition to the histopathological features of a swine ganglioneuroma. 相似文献
94.
Tochitani T Toyosawa K Matsumoto I Kouchi M Michimae Y Koujitani T Funabashi H Seki T 《Journal of toxicologic pathology》2011,24(4):245-249
In the present study, we investigated the histological, immunohistochemical and ultrastructural characteristics of cytoplasmic blood plasma inclusions that spontaneously occurred in a rat liver. Histologically, a number of cytoplasmic inclusions were observed in the liver of an 8-week-old female SD rat. These inclusions were strongly positive for PAS staining and resistant to diastase digestion. Immunohistochemical analyses revealed that these inclusions were positive for albumin and IgG; however, most of them were negative for LAMP-1 and LAMP-2. Ultrastructurally, the inclusions were surrounded by limiting membranes and composed of moderately electron dense, homogenous materials. These characteristics described here represent valuable information for pathological examination in toxicity studies. 相似文献
95.
Yasuo KOBAYASHI Aya ITOH Kanae MIYAWAKI Satoshi KOIKE Osamu IWABUCHI Yuji IIMURA Yuri KOBASHI Tomoyuki KAWASHIMA Junichi WAKAMATSU Akihito HATTORI Hiroshi MURAKAMI Fumiki MORIMATSU Takashi NAKAEBISU Takeshi HISHINUMA 《Animal Science Journal》2011,82(4):607-615
The effect of liquid whey feeding on fecal bacteria and their metabolites was assessed in five pregnant sows and 66 growing pigs. Sows were fed a control diet for 4 weeks (control period) followed by the same diet but with whey feeding (5 L/day/pig) for 4 weeks (whey period). One group of growing pigs was given 267 L of whey per pig (whey group), while the other group was not (control group). In both cases, liquid whey was given separately from control diet. Sows in the whey period had feces showing lower pH, lower ammonia concentration, and larger population sizes of total bacteria, lactobacilli and bifidobacteria. The bacterial gene library analysis indicated that Mitsuokella and Megasphaera were more frequently detected, while Clostridium disporicum were detected less frequently in the whey period. Feces from whey‐fed growing pigs showed lower pH than that from control pigs in the early stage of growing. Also, larger populations of total bacteria, lactobacilli and bifidobacteria were recorded in the whey group. From the bacterial gene library analysis, the detection frequency of Lactobacillus reuteri tended to be higher in the whey group. These results indicate that whey feeding influences the hindgut microbiota of pigs, possibly leading to a fermentation shift that is favorable for animal health. 相似文献
96.
Taketo Ashizawa Mami Takahashi Jouji Moriwaki Kazuyuki Hirayae 《Journal of General Plant Pathology》2011,77(1):10-16
False smut, caused by Ustilaginoidea
virens, is a serious disease of rice worldwide. To evaluate false smut resistance in rice, we developed a method combining the cultivation
of the main culm of rice plants in the greenhouse and rapid preparation of a conidial suspension to inject into the leaf sheath.
The method was used to evaluate false smut resistance in 18 varieties/lines of rice. For comparison, field trials were also
carried out in 2007 and 2008. The results indicated that the greenhouse method was more reproducible than field trials: commercial
varieties tested were resistant; almost all the forage varieties were highly susceptible; and blast-resistant varieties/lines
were mostly resistant to false smut. Thus, this inoculation method will be useful for determining the level of false smut
resistance in rice and for breeding resistant varieties. 相似文献
97.
Hiroshi OHTA Kanae TAKADA Yuji SUNDEN Yu TAMURA Tatsuyuki OSUGA Sue Yee LIM Masahiro MURAKAMI Noboru SASAKI Bandula Kumara WICKRAMASEKARA RAJAPAKSHAGE Kensuke NAKAMURA Masahiro YAMASAKI Mitsuyoshi TAKIGUCHI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2014,76(3):409-414
98.
99.
100.
Susumu IWAIDE Naoki UJIKE Kyoko KOBAYASHI Yukiko SASSA Tomoaki MURAKAMI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2021,83(6):962
In AA amyloidosis, cross-species oral transmission has been demonstrated in several animal models. While it is known that the transmission efficiency of AA amyloidosis between different species is lower than that among the same species, the mechanism of this species-barrier is unclear. In this study, we found at first that mice orally given a large amount of bovine AA simultaneously with inflammatory stimulation did not develop AA amyloidosis. Therefore, we hypothesized that the low efficiency of the cross-species oral transmission of AA amyloidosis might be due to the low absorption rate in Peyer’s patches. To evaluate the hypothesis, we next investigated whether bovine AA was taken up by Peyer’s patches and translocated to other organs in vivo and ex vivo models. The direct absorption of bovine AA by Peyer’s patches was not observed. Besides, translocation of bovine AA to the mesenteric lymph nodes, spleen, liver, or kidney was not observed except the mesenteric lymph node of a single mouse. Thus, absorption of bovine AA by Peyer’s patches occurred much less efficiently in mouse models of cross-species oral transmission of AA amyloidosis. The present study suggests that the less efficient amyloid uptake by Peyer’s patches may be involved in the species-barrier of oral transmission of AA amyloidosis. 相似文献