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排序方式: 共有164条查询结果,搜索用时 15 毫秒
81.
Hara Y Harada Y Fujita Y Taoda T Nezu Y Yamaguchi S Orima H Tagawa M 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2002,64(10):933-936
Changes in hip joint congruity was evaluated in dogs with hip dysplasia before and after triple pelvic osteotomy by computed tomography examination in the standing position. Lateral center edge angle significantly increased, and center distance (CD) significantly decreased after surgery compared to the values before surgery, respectively. There was an inverse proportion between the postoperative period and the change in the ratio of CD. These results suggested that joint laxity was improved with time after surgery, providing evidence of the clinical usefulness of this surgery. 相似文献
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83.
Kaoru Inoue Tomomi Morikawa Miwa Takahashi Midori Yoshida Kumiko Ogawa 《Journal of toxicologic pathology》2015,28(2):89-97
We experienced obstructive nephropathy in F344 rats treated with DL-potassium hydrogen
tartrate (PHT) in a 13-week oral repeated dose toxicity study. Six-week-old male and
female F344/DuCrj rats were fed a diet containing up to 2.0% PHT for 13 weeks.
Microscopical findings including irregular dilation of the distal tubule lumen, foreign
body giant cells, inflammatory cell infiltration, and regeneration of renal tubules were
observed focally or multifocally in the renal cortex and/or medulla in the 0.5% and higher
dosage groups of both sexes. The severity of these lesions increased in a dose-dependent
manner. In the urinalysis, an increase in protein and white blood cells or the
concentration of tartaric acid was detected in the 0.5% PHT and higher dosage groups of
both sexes or males, respectively, though conventional blood biochemical analysis did not
indicate failure of renal function. These results indicate that the PHT induces
obstructive nephropathy in rats. There were no other treatment-related changes in other
organs. 相似文献
84.
Nutrient sufficiency in beef cows grazing on a dwarf bamboo‐dominated forestland pasture in Japan 下载免费PDF全文
The nutritional status of cows grazing on a 120‐ha public alpine forestland pasture dominated by the dwarf bamboo Sasa senanensis located in central Japan was evaluated over the course of 2 years. Data were collected during grazing seasons in three periods: early (June), mid‐ (August) and late (late September–early October) periods. During these periods, the number of experimental Japanese Black cows varied between three and six. With the exception of the dry matter (DM) intake in 2005 and the crude protein (CP) digestibility in 2006, the DM and CP intake and digestibility were lower in the mid‐ and late periods than in the early period for both years (P < 0.05). Metabolizable energy intake was slightly insufficient for the requirement of the cows in the late period of 2005; in the mid‐ and late periods of 2006, the metabolizable energy intake was 0.4 to 0.5 times the requirement. These results suggest that the energy intake of cows grazing on forestland pasture dominated by S. senanensis would not satisfy their requirements starting in the mid‐period (August) grazing, even though the pasture had abundant herbage resources during these periods. 相似文献
85.
In the temperate zone of Japan, Pinus densiflora Sieb. et Zucc. bears needles of up to three age classes in the upper crown and up to five age classes in the lower crown. To elucidate the effects of leaf age on photosynthetic parameters and its relationships with leaf mass per unit area (LMA) and leaf nitrogen (N(l)) concentration on an area (N(a)) and mass (N(m)) basis, we measured seasonal variations in LMA, N(l), light-saturated photosynthetic rate (A(max)), stomatal conductance (g(s)), maximum rate of carboxylation (V(cmax)) and maximum rate of electron transport (J(max)) in leaves of all age classes in the upper and lower crown. Leaf mass per unit area increased by 27% with increasing leaf age in the lower crown, but LMA did not depend on age in the upper crown. Leaf age had a significant effect on N(m) but not on N(a) in both crown positions, indicating that decreases in N(m) resulted from dilution. Photosynthetic parameters decreased significantly with leaf age in the lower crown (39% for A(max) and 43% for V(cmax)), but the effect of leaf age was not as great in the upper crown, although these parameters exhibited seasonal variation in both crown positions. Regression analysis indicated a close relationship between LMA and N(a), regardless of age class or when each age class was pooled (r(2) = 0.57-0.86). Relationships between LMA and N(a) and among A(max), V(cmax) and J(max) were weak or not significant when all age classes were examined by regression analysis. However, compared with older leaves, relationships among LMA, N(a) and A(max) were stronger in younger leaves. These results indicate that changes in LMA and N(l) mainly reflect light acclimation during leaf development, but they are only slightly affected by irradiance in mature leaves. In conclusion, LMA and N(l) are useful parameters for estimating photosynthetic capacity, but age-related effects need to be taken into account, especially in evergreen conifers. 相似文献
86.
Fisheries Science - We investigated the free amino acid (FAA) composition, glycogen content, and body index of 31 brands of oyster Crassostrea gigas to evaluate their taste graphically using a... 相似文献
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89.
Kentaro Higuchi Yutaka Takeuchi Misako Miwa Yoji Yamamoto Kazunobu Tsunemoto Goro Yoshizaki 《Fisheries Science》2011,77(1):69-77
Recently, we developed an intraspecies spermatogonial transplantation technique in a pelagic egg spawning marine teleost,
nibe croaker Nibea mitsukurii. Nibe croaker is an ideal candidate recipient for spermatogonial transplantation since it has a short generation time and
small body size. In the present study, yellowtail Seriola quinqueradiata spermatogonia were transplanted into nibe croaker larvae, and the behavior of transplanted spermatogonia in recipient gonads
was observed. Three weeks post-transplantation, yellowtail spermatogonia were incorporated into the gonads of 72 out of 88
recipients. An antiproliferating cell nuclear antigen was detected in incorporated yellowtail spermatogonia, suggesting that
the xenogenic germ cells were proliferating in recipient gonads. Yellowtail vasa-positive spermatogonia survived for 11 months after transplantation in the gonads of recipient fish. Thus, we showed that
the microenvironment in nibe croaker gonads can support the colonization, proliferation, and survival of germ cells derived
from a different taxonomic family. 相似文献
90.
Teruya Maki Hiroshi Hasegawa Hiroyuki Kitami Kyoko Fumoto Yukihiro Munekage Kazumasa Ueda 《Fisheries Science》2006,72(4):811-820
ABSTRACT: Antibiotic residues in marine sediments of fish farms negatively influence microbial ecologic systems. The microbial degradation of antibiotic residues was experimentally examined in the marine sediments of Uranouchi Bay, to which one of five antibiotics was added. After incubation reducing physical factors, ampicillin, doxycycline, oxytetracycline, and thiamphenicol were significantly degraded, while josamycin maintained most of the initial amounts. The isolates resistant to ampicillin, josamycin, oxytetracycline, or thiamphenicol degraded each antibiotic in wide ranges of degrees, whereas the isolates degrading doxycycline were not obtained. Microbial degradation may contribute to the disappearance of ampicillin, doxycycline, oxytetracycline, and thiamphenicol in the fish farm. In contrast, the disappearance of josamycin would depend on physical factors, but the bacteria degrading josamycin at least exist in the marine sediments. Phylogenetic analysis using 16S rDNA sequences demonstrated that the antibiotic-resistant isolates formed several clusters in the Gram-positive bacterial group, the Flavobacterium–Cytophaga–Bacteroides group, and the proteobacteria subdivisions. The antibiotic-resistant bacterial population would be composed of various species including ubiquitous coastal bacterial groups. Several species of antibiotic resistant bacteria show antibiotic degradation activities, and appear to contribute to the disappearance of antibiotics in Uranouchi Bay. 相似文献