排序方式： 共有47条查询结果，搜索用时 15 毫秒
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Toshihiro NADE Kazuhisa FUJITA Masashi FUJII Masaya YOSHIDA Teikichi HARYU Satsuki MISUMI Toshiaki OKUMURA 《Animal Science Journal》2005,76(5):513-517
An X‐ray computed tomography (CT) system for live standing cattle was developed for studying the meat yield, carcass composition and so on. The gantry contained three X‐ray tubes and detectors that corresponded to each X‐ray tube. The system was able to operate while the animal remained standing. The scan area had a diameter of 900 mm. The Musculus longissimus and Musculus trapezius areas, and the back fat thickness in the CT image were evaluated and compared to the actual cross‐section of the carcass using eight cattle. The differences among the muscles, and the subcutaneous and intermuscular fat were easily recognized. The correlation coefficient between the CT image and the actual carcass photograph of the M. longissimus area and the back fat thickness was high (r = 0.84, r = 0.93, P < 0.01). The present study demonstrated that muscle, fat and bone can be clearly imaged from a live standing animal using X‐ray equipment. 相似文献
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Using a large‐scale data set that included first lactation test day records from 1975 to 2000 for Japanese Holsteins, genetic parameters for milk yield were estimated by using random regression (RR) test‐day models (TDM) with heterogeneous and homogeneous residual variances. It is necessary for the RR‐TDM to include a function that explains the shape of the lactation curve. The RR‐TDM with the LW curve, which combined Wilmink's curve and a Legendre polynomial, was used for fitting the model for milk yield. In recent years, increases in residual variance have been noted for Japanese dairy cattle. Thus, three kinds of heterogeneous residual variance over the calving year were considered: H1, H2 and HG. Linear and quadratic exponential functions for the calving year were used in H1 and H2, respectively. Residual variance of HG was divided into five groups according to calving year. Homogeneous residual variance was HO. All heterogeneous residual variances increased with calving year in an almost linear fashion. Residual variance increased over the study period. However, there is no need to consider heterogeneous residual variances in genetic evaluations, because the heterogeneity of residual variance over the years did not affect the ranking of top sires and cows. 相似文献
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CECILIA INES ONO MORIKAWA RIE MIYAURA MARIA DE LOURDES TAPIA Y FIGUEROA ELSA LILIANA RENGIFO SALGADO YOSHIHARU FUJII 《Weed Biology and Management》2012,12(1):1-11
Peru is one of the 20 botanically extremely diverse countries in the world, with >17 000 flowering plants, of which 30% are endemic. So far, no systematic research has been conducted on the screening of the allelopathic plants. In this study, the allelopathic activity of 170 species from 61 families of Peruvian plants that were collected from the three main regions of Peru – the Costa (Pacific coastline), the Sierra (Andean mountains), and the Selva (Amazonian rainforest) – was evaluated. The allelopathic activity was determined by the Sandwich Method, which can evaluate the activity of leaf leachates. The species that were found to be highly inhibitory in this screening, under the criterion of >90% inhibition of the radicle of lettuce (Lactuca sativa) seedlings, were Aristeguietia ballii and Diplostephium foliosissimum (Asteraceae) and Spondias mombin (Anacardiaceae). All of these species are native plants from Peru. This study gives a strong clue regarding the potential of isolating potent allelochemicals from these plants in the future. 相似文献
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Fujiko MINAMI-FUKUDA Makoto NAGAI Hikaru TAKAI Toshiaki MURAKAMI Tadashi OZAWA Shinobu TSUCHIAKA Sachiko OKAZAKI Yukie KATAYAMA Mami OBA Naomi NISHIURA Yukiko SASSA Tsutomu OMATSU Tetsuya FURUYA Satoshi KOYAMA Junsuke SHIRAI Hiroshi TSUNEMITSU Yoshiki FUJII Kazuhiko KATAYAMA Tetsuya MIZUTANI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2013,75(12):1651-1655
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外来入侵杂草空心莲子草与本土杂草莲子草的化感作用潜力比较 总被引：2，自引：0，他引：2
为确定外来入侵杂草空心莲子草的化感作用潜力,以我国本土生长的莲子草为对照采用“三明治”生测法,测定了空心莲子草和莲子草及其不同器官对靶标莴苣和无芒稗根长和芽长的抑制率。 结果表明,空心莲子草叶片处理对莴苣和无芒稗根长的抑制率分别为81%和51%,对莴苣和无芒稗芽长的抑制率分别为49%和48%,显著高于空白对照。但与莲子草相比,差异不显著。空心莲子草根系对莴苣的根长平均抑制率为54%,显著高于茎和叶片。随着样品用量增加,空心莲子草对莴苣根长的抑制率显著提高,其50 mg叶片处理对莴苣根长的抑制率为83%,显著高于10 mg处理的54%和30 mg处理的61%。 相似文献
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Hiroshi TAKANO Tomomi ISOGAI Takuma AOKI Yoshito WAKAO Yoko FUJII 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2015,77(2):193-201
The purpose of the present study is to investigate the feasibility of strain analysis using speckle tracking echocardiography (STE) in cats and to evaluate STE variables in cats with hypertrophic cardiomyopathy (HCM). Sixteen clinically healthy cats and 17 cats with HCM were used. Radial and circumferential strain and strain rate variables in healthy cats were measured using STE to assess the feasibility. Comparisons of global strain and strain variables between healthy cats and cats with HCM were performed. Segmental assessments of left ventricle (LV) wall for strain and strain rate variables in cats with HCM were also performed. As a result, technically adequate images were obtained in 97.6% of the segments for STE analysis. Sedation using buprenorphine and acepromazine did not affect any global strain nor strain rate variable. In LV segments of cats with HCM, reduced segmental radial strain and strain rate variables had significantly related with segmental LV hypertrophy.
It is concluded that STE analysis using short axis images of LV appeared to be clinically feasible in cats, having the possibility to be useful for detecting myocardial dysfunctions in cats with diseased heart. 相似文献