Keratometry in normal cats: a cross-sectional study in Japan using an automated handheld keratometer     

Minae KAWASAKI  Tomoya FURUJO  Kazuo AZUMA  Yoshiharu OKAMOTO  Norihiko ITO 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2021,83(8):1256

Keratometry was performed in 73 domestic cats of varied signalment in Japan using an automated handheld keratometer. The mean corneal curvature radius was significantly lower for cats younger than 1 year than for those older than 2 years (8.04 mm vs. 8.80−8.99 mm, P<0.01). The radius was significantly greater in males than in females among the cats older than 11 years (9.22 mm vs. 8.84 mm, P=0.01), while the age distributions of the males and females were similar. Corneal astigmatism did not significantly differ across the gender and age groups. The predictability of the corneal curvature and astigmatism was approximately 41−43% and less than 3%, respectively, as a function of age and bodyweight. The results highlighted some age- and sex-related keratometric variations in domestic cats in Japan.  相似文献   

Effects of GH gene polymorphism and sex on carcass traits and fatty acid compositions in Japanese Black cattle     

Astrid ARDIYANTI  Yoshie OKI  Yoshihito SUDA  Keiichi SUZUKI  Koichi CHIKUNI  Yoshiaki OBARA  Kazuo KATOH 《Animal Science Journal》2009,80(1):62-69

To investigate the effects of bovine growth hormone (bGH) gene polymorphism on carcass traits and fatty acid compositions in Japanese Black cattle caused by nucleotide substitution of CTG (allele A)/GTG (allele B) at codon 127 and of ACG (allele A and B)/ATG (allele C) at codon 172 of bGH, GH genotypes of 135 cattle were determined using allele specific-multiplex polymerase chain reaction (PCR). Allele A gave greater rib thickness and lower melting point of fat (MP) while allele B gave higher C18:1% ( P  < 0.05). Allele C gave higher C18:1, monounsaturated fatty acid (MUFA), unsaturated fatty acid (USFA) percentages ( P  < 0.05). It also gave lower saturated fatty acid (SFA) percentages, higher MUFA/SFA and USFA/SFA ratios, and lower MP ( P  < 0.05). Interactions of sex and GH alleles were analyzed. In heifers, allele A gave higher carcass weight, daily carcass gain, rib eye area, rib thickness, subcutaneous fat thickness, and BMS while allele B gave greater rib eye area and rib thickness ( P  < 0.05). Allele C gave higher C18:1 ( P  < 0.01), MUFA ( P  < 0.01), USFA percentages ( P  < 0.05) and MUFA/SFA and USFA/SFA ratios ( P  < 0.01), and lower C16:0 and SFA percentages ( P  < 0.05) and MP ( P  < 0.01). GH gene polymorphism affected carcass traits and fatty acid compositions although the effects were more pronounced in heifers.  相似文献   

Discrimination of mother's odor in one-week-old dog puppies     

Kazuo Fujita  Akiko Takaoka  Masahiro Furumi 《Journal of Veterinary Behavior: Clinical Applications and Research》2009,4(2):55-56

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Determination of the genetic structure of remnant Morus boninensis Koidz. trees to establish a conservation program on the Bonin Islands, Japan     

Naoki Tani  Hiroshi Yoshimaru  Takayuki Kawahara  Yoshio Hoshi  Fuyuo Nobushima  Takaya Yasui 《BMC ecology》2006,6(1):14-13

Background  

Morus boninensis, is an endemic plant of the Bonin (Ogasawara) Islands of Japan and is categorized as "critically endangered" in the Japanese red data book. However, little information is available about its ecological, evolutionary and genetic status, despite the urgent need for guidelines for the conservation of the species. Therefore, we adopted Moritz's MU concept, based on the species' current genetic structure, to define management units and to select mother tree candidates for seed orchards.  相似文献   

Investigation of a-PVA/s-PVA hydrogels prepared by freezing-thawing method     

Mei Huang  Dongdan Cai  Yanhua Liu  Jun Sun  Jianjun Wang  Chuanxiang Qin  Lixing Dai  Yamaura Kazuo 《Fibers and Polymers》2012,13(8):955-962

The hydrogels of atactic poly (vinyl alcohol) (a-PVA) and syndiotactic poly (vinyl alcohol) (s-PVA) with different blend ratios were prepared by freezing-thawing processes. The effect of s-PVA on gelation behavior of the blend was investigated in terms of gelation temperature (T _gel) and hydrogel melting temperature (T _gm). And swelling behavior, crystallization, thermal properties, morphology of the blend hydrogels were also studied. With the increase of s-PVA, T _gel of the blend solution and T _gm of the blend hydrogels increase. Both crystallinity and crystallite dimensions based on the XRD profiles are nearly monotonically increasing functions of s-PVA content. FTIR results indicate the number of hydrogen bonds raises with s-PVA increasing. DSC results demonstrate s-PVA favors improvement of hydrogels thermal stability. According to SEM images of hydrogels, the increase of cross-linking caused by s-PVA in the blend hydrogels results in denser structure, which in turn leads to increased gel fraction (G) and Hardness. 50/50 (a-PVA/s-PVA) blend hydrogel has a denser structure with EWC of 73.6 %, hardness of 22.8 HA and T _m of 236.15 °C. The result indicates blending a-PVA and s-PVA is a useful method to form the hydrogel having good thermal stability and relative high degree of swelling.  相似文献   

黑龙江省苏打碱土pH和EC与盐分组成的关系   总被引：2，自引：0，他引：2  

匡恩俊  中本和夫  刘峰  迟凤琴  矫江  张久明 《黑龙江农业科学》2011,(5):37-41,54

通过对比苏打碱土上无植被"碱斑"和临近有植被的"草地"土壤水分、离子变化规律,研究了碱土各种离子及其与土壤pH、EC的关系.结果表明:即使在极端干旱的气象条件下,地下水对地表水补给能力仍然很强,地下水参与土壤盐分运动的现象明显.碱斑土壤pH高于草地;在高水分条件下,pH的峰值出现位置在地表下30 cm,土壤干旱过程,p...  相似文献   

Gene coding for SigA-binding protein from <Emphasis Type="Italic">Arabidopsis</Emphasis> appears to be transcriptionally up-regulated by salicylic acid and NPR1-dependent mechanisms     

Mari Narusaka  Kiyoshi Kawai  Norihiko Izawa  Motoaki Seki  Kazuo Shinozaki  Shigemi Seo  Masatomo Kobayashi  Tomonori Shiraishi  Yoshihiro Narusaka 《Journal of General Plant Pathology》2008,74(5):345-354

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Demographic survey of the yellow-phase Japanese eel Anguilla japonica in Japan     

Kazuki Yokouchi  Yasuyuki Kaneko  Kenzo Kaifu  Jun Aoyama  Kazuo Uchida  Katsumi Tsukamoto 《Fisheries Science》2014,80(3):543-554

Catch statistics and biological data of the Japanese eel Anguilla japonica from 12 river systems in nine prefectures of Japan (36°N, 140°E–31°N, 130°E) during 1999–2004 were analyzed in order to evaluate the demography of A. japonica in Japan. Significant differences in biological characteristics of 6388 eels were found among the river systems. Fishery catches of eels in all locations have declined, but the magnitudes or patterns of decline seem to be different. Of sex-identified eels, mean total lengths ± SD (mm) of females (n = 3776) and males (n = 962) were 495.6 ± 104.3 and 412.9 ± 80.7, respectively, and overall sex ratio (% female) was 79.6 %. Mean age (years) and growth rate (mm year^?1) were 5.0 ± 1.9 and 96.7 ± 38.6 for females (n = 3643) and 3.6 ± 1.7 and 120.5 ± 65.4 for males (n = 907), respectively. This study highlights the demographic heterogeneity of the A. japonica among the studied river systems, which suggests that it is important to conserve a variety of habitats in multiple river systems as an inclusive management target in addition to restoration of the diversity of habitats for eels in a single river system.  相似文献   

Investigation of lactic acid bacterial strains for meat fermentation and the product's antioxidant and angiotensin‐I‐converting‐enzyme inhibitory activities          下载免费PDF全文

Shiro Takeda  Hisashi Matsufuji  Koji Nakade  Shin‐ichi Takenoyama  Abdulatef Ahhmed  Ryoichi Sakata  Satoshi Kawahara  Michio Muguruma 《Animal Science Journal》2017,88(3):507-516

In the lactic acid bacteria (LAB) strains screened from our LAB collection, Lactobacillus (L.) sakei strain no. 23 and L. curvatus strain no. 28 degraded meat protein and tolerated salt and nitrite in vitro. Fermented sausages inoculated strains no. 23 and no. 28 showed not only favorable increases in viable LAB counts and reduced pH, but also the degradation of meat protein. The sausages fermented with these strains showed significantly higher antioxidant activity than those without LAB or fermented by each LAB type strain. Angiotensin‐I‐converting‐enzyme (ACE) inhibitory activity was also significantly higher in the sausages fermented with strain no. 23 than in those fermented with the type strain. Higher ACE inhibitory activity was also observed in the sausages fermented with strain no. 28, but did not differ significantly from those with the type strain. An analysis of the proteolysis and degradation products formed by each LAB in sausages suggested that those bioactivities yielded fermentation products such as peptides. Therefore, LAB starters that can adequately ferment meat, such as strains no. 23 and no. 28, should contribute to the production of bioactive compounds in meat products.  相似文献   

Species Composition,Diversity and Productivity of Homesteads in Southeastern Bangladesh     

Md. Abiar Rahman  Masakazu Tani  Kazuo Asahiro  S. M. Asik Ullah 《Small-Scale Forestry》2017,16(3):295-309

A homestead is an integrated production system where trees, crops, livestock and poultry are found in and around the household residence in Bangladesh. It is a potential production unit that provides various product, service and ecological functions. Almost all people in Bangladesh including landless households have homesteads in which they grow trees and crops even in a small piece of land. This study characterizes the species composition, diversity and productivity of the homestead production system in the Teknaf peninsula, southeastern Bangladesh. Survey data collection was from a total of 180 homesteads covering five household categories: large, medium, small, marginal and landless. Vegetable, fruit, timber, and livestock and poultry were common components in the homestead production system. Various types of plants were mainly concentrated in back yards, front yards, boundaries and corners of homesteads. The mean number of tree species per homestead was about 15. In total, 189 tree and shrub species were recorded, and were distinctly high and low in the large (363.7) and landless (55.7) household categories. Species composition, diversity and productivity of homesteads were found to be related to household categories. Richness and diversity of tree and shrub species increased with household size. Betel nut was the dominant tree species followed by mango, jackfruit and coconut. Annual income from homesteads also varied among the household categories, with a mean contribution of the homestead to annual income of about 25 %. A large portion of homestead income came from betel nut trees. There is scope to increase species diversity and income by designing homesteads with the engagement of women and other family members.  相似文献