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排序方式: 共有186条查询结果,搜索用时 15 毫秒
141.
Y Iritani S Aoyama S Takigami Y Hayashi R Ogawa N Yanagida S Saeki K Kamogawa 《Avian diseases》1991,35(4):659-661
Antibody response of recombinant fowlpox virus (FPV) was studied in chickens inoculated with the virus in the presence or absence of antibodies against Newcastle disease virus (NDV) or FPV. In the case of NDV, high hemagglutination-inhibition titers to NDV were obtained when the antibody was present. No immune response to NDV was observed in the chickens previously vaccinated with FPV. 相似文献
142.
Rat Articular Cartilages Change Their Tissue and Protein Compositions During Perinatal Period 下载免费PDF全文
M. Kobayashi‐Miura T. Miura H. Osago Y. Yamaguchi T. Aoyama T. Tanabe K.‐i. Matsumoto Y. Fujita 《Anatomia, histologia, embryologia》2016,45(1):9-18
Articular cartilage (AC) covers the surface of bones in joints and functions as a cushion against mechanical loading. The tissue contains abundant extracellular matrix (ECM), which mainly consists of proteoglycans (PG) and collagen (COL) fibres. The property of AC is gradually changing by ageing with gravity loading. To know the property change of AC by initial gravity loading during short period after birth, we performed histological assays and proteomics assay on the AC of the femoral condyle in knee joints of perinatal rats. The water content (%) was significantly decreased in neonate AC compared with fetal AC. During the perinatal stages (E19 and P0), the localizations of glycosaminoglycan (GAG) and type I and II COLs were homogeneous. The density of chondrocytes was significantly decreased in the deeper layers comparing with the surface layer in neonate AC. In addition, we found a drastic change in the protein expression pattern on proteomic analysis. The expressions of ECM components were relatively increased in neonate AC compared with fetal AC. 相似文献
143.
K. Nakamura K. Noguchi T. Aoyama T. Nakajima N. Tanimura 《British poultry science》1996,37(1):189-195
1. The effect of ubiquinone (C0Q9) on ascites in broiler chickens was investigated.
2. The commercial broilers were divided into 2 groups of 100 birds each; CoQ9‐treated group and non‐treated group.
3. The chickens were grown in a positive‐pressured house with double high efficiency particulate air filtered intakes and exhaust, and thus were strictly isolated from infectious agents.
4. The chickens (15 to 21 d old) were exposed to cold stress in order to induce ascites.
5. The number of birds with ascites in the C0Q3‐treated group was significantly lower than in the non‐treated group.
6. Survival and production rates were better in the CoQ^‐treated group than in the non‐treated group. 相似文献
144.
Kusuda S Ikoma M Morikaku K Koizumi J Kawaguchi Y Kobayashi K Matsui K Nakamura A Hashikawa H Kobayashi K Ueda M Kaneko M Akikawa T Shibagaki S Doi O 《The Journal of reproduction and development》2007,53(6):1283-1289
The progesterone (P(4)) profiles and macroscopic vulvar changes of female Malayan tapirs were investigated in order to understand their fundamental reproductive physiology and to search for visual indicators of estrus. Blood was collected once or twice a week from seven female Malayan tapirs kept at four zoos. Serum or plasma P(4) concentrations were determined by radioimmunoassay. The P(4) concentrations changed cyclically throughout the years, and a total of 56 cycles was confirmed in the seven females. The length of the estrous cycle based on the P(4) profiles was 43.6+/-2.0 days; however, this mean includes great variation in length, from 21 to 84 days. Mucous discharge from the vulva and vulvar swelling were seen when the P(4) concentrations were low before the beginning of a rise in most cases. In conclusion, captive female Malayan tapirs have variations of approximately 1 to 3 months in estrous cycle length, and visual changes in the vulva are helpful in estimating estrus in female Malayan tapirs. 相似文献
145.
146.
Riaz Hasan Keiichiro Nishimura Masakazu Okada Miki Akamatsu Masafumi Inoue Tamio Ueno Tooru Taga 《Pest management science》1996,46(2):105-112
Methyl 3-(4-chlorophenyl)-1-[N-(4-chlorophenyl)carbamoyl]-4-methyl-2-pyrazoline-4-carboxylate was converted to corresponding (1R)- and (1S)-phenethyl esters via its carboxylic acid and acid chloride at the C-4 atom to separate the diastereomers. Their configurations were confirmed by X-ray analysis. Both isomers of the (1R)methylbenzyl ester were subjected to transesterification with sodium methoxide to obtain enantiomers of the starting methyl ester. Their insecticidal activity was measured against American cockroaches (Periplaneta americana (L.)) by injection and against house flies (Musca domestica L.) by topical application under various synergistic conditions with metabolic inhibitors. The activity values of the four α-methylbenzyl esters and the R-isomer of the starting methyl ester were similar. The S-enantiomer of the methyl ester was about 10 and 100 times more active than the R-isomer against the cockroach and the fly, respectively. Some N-arylacetyl and N-aryloxyacetyl derivatives of the starting N-(4-chlorophenyl)carbamoyl compound gave very low activity. Conformation-energy profiles for some compounds suggested that the conformation of substituents on the N-1 atom in the pyrazoline ring has a specific role for the potential insecticidal effects. 相似文献
147.
148.
Kazushi Kusakabe Masaki Hata Jun Shoji Masakazu Hori Takeshi Tomiyama 《Fisheries Science》2017,83(2):215-219
To determine the optimal temperature for juvenile (0 year old) marbled flounder Pseudopleuronectes yokohamae, juveniles of 40–54 mm standard length were reared at six temperature conditions in the range of 8–26 °C, using group- and individual-based methods. Growth of juveniles increased from 8 to 20 °C but decreased from 20 to 26 °C, irrespective of the rearing method used. Food intake was greatest at 20 and 24 °C compared with other temperatures, while feed conversion efficiency was greater at 20 °C than 24 °C in individual rearing. Individual rearing provided more information such as individual variations in growth and food consumption, suggesting the importance of individual-based experiments for exploring the optimal temperature for fish. 相似文献
149.
Shigeki Dan Hiraku Iwasaki Arata Takasugi Shodai Shibasaki Hideki Yamazaki Masakazu Oka Katsuyuki Hamasaki 《Aquaculture Research》2019,50(4):1361-1370
Despite recent advances in culture technology for East Asian common octopus Octopus sinensis paralarvae using upwelling systems, securing suitable feed for the paralarvae is an unresolved issue. The zoea of the swimming crab Portunus trituberculatus is a good candidate for paralarval feed because of the high fecundity of the adult females. To investigate the effects of supplying P. trituberculatus zoeae and their feeding method on paralarvae, we cultured paralarvae with supplying different combination ratios of zoeae and Artemia (10:0, 7:3, 5:5, 3:7 and 0:10), and with or without supplementing rotifers using small‐scale (3‐L) upwelling systems. Paralarval survival rate and growth were improved when zoeae were supplied as the main feed, but reduced when the proportion of Artemia exceeded half the whole preys. Supplementing rotifers did not affect the paralarval survival and growth. Subsequently, paralarvae were cultured by supplying zoeae (partially augmented by Artemia) using three large (1‐kl) upwelling systems to assess their feeding effectiveness in juvenile octopus production. Paralarvae could be cultured at high survival rates of 77.1 ± 5.1% to reach benthic juveniles at 23 days after hatching. In conclusion, supplying P. trituberculatus zoeae augmented with Artemia under an upwelling culture system has great potential for juvenile octopus production. 相似文献
150.
Daisei Ando Kazutaka Shimoda Yoshihito Shinriki Hirokazu Urabe Tomoya Aoyama Masamichi Nakajima 《Fisheries Science》2010,76(5):761-767
Chum salmon Oncorhynchus keta eggs from the Chitose and Shiriuchi rivers in Hokkaido, northern Japan, were incubated under identical conditions with the
aim of comparing vertebral number (V
N) to that reported archived data from the 1950s. The comparison revealed that mean V
N of salmon from the Shiriuchi River has remained unchanged for 50 years and is higher than that from the Chitose River. The
V
N in the Chitose River salmon was found to be significantly higher than that recorded in the archival data. The variation in
the mean V
N of chum salmon fry collected during different seasons and years in the Chitose River falls within a range that has remained
constant, suggesting that the difference between the values obtained in our study and the archival data may be due to differences
in the timing of egg collection. These results indicate that the mean V
N of chum salmon has been stable for a long period. Incubation experiments under identical conditions are a useful tool for
examining changes in genetic structure and detecting the essential properties of populations. 相似文献