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991.
对加快发展吉林省绿色食品产业的思考 总被引:1,自引:0,他引:1
阐明了吉林省发展绿色食品的意义,介绍了吉林省绿色食品发展的现状,分析了吉林省绿色食品产业存在的问题,提出了搞好绿色食品市场建设、培育绿色食品龙头企业和生产基地,加大对绿色食品的扶持力度、建立健全专业管理体系和质量监测体系等、发展绿色食品产业的对策。 相似文献
992.
The storied nature of agriculture and evaluation: A conversation 总被引:2,自引:1,他引:1
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双季连作稻田引入萍,鱼,螺组成一定的群落食物链后,稻田的系统生产力显著提高。对稻田绿萍的消长因素和萍-鱼食物链行为进行计算模拟的结果表明:在纯稻田的稻-萍-鱼系统放养草鱼夏花的数量以45000尾/hm ̄2为宜。田塘式稻-萍─鱼夏花草鱼苗可放养75000尾/hm ̄2.稻田组建群落食物链对水稻生长无明显不利影响,且有增产作用。 相似文献
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Igshaan Samuels Clement Cupido Melvin B Swarts Anthony R Palmer Jamie W Paulse 《African Journal of Range and Forage Science》2016,33(1):1-9
The Leliefontein communal area in Namaqualand is grazed by mixed species herds that have multiple benefits for pastoralists. This study assessed how the management (herding and free-ranging) of different livestock herds affects their feeding ecology during the wet and dry seasons in a semi-arid shrubland. By using direct observations of livestock grazing in the field, we established their habitat preferences, diet selection and resources overlap. Results indicate that all free-ranging livestock can be considered grazers with cattle being selective. When sheep are herded, they tend to be more generalist feeders and herded goats are browsers. Livestock diet selection and forage preferences are largely linked to the habitats in which they graze and browse. Dietary overlap is highest between free-ranging livestock irrespective of season, whereas herded livestock are able to consume a food source with little potential competition from other livestock. Although the wet-season annual forage resources are able to sustain the livestock population in Leliefontein, this study concludes that the overdependence on annual vegetation would make livestock vulnerable during drought periods when forage production is low. 相似文献
997.
Software development for estimating the concentration of radioactive cesium in the skeletal muscles of cattle from blood samples
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![点击此处可从《Animal Science Journal》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Tomokazu Fukuda Masahiro Hiji Yasushi Kino Yasuyuki Abe Hideaki Yamashiro Jin Kobayashi Yoshinaka Shimizu Atsushi Takahashi Toshihiko Suzuki Mirei Chiba Kazuya Inoue Yoshikazu Kuwahara Motoko Morimoto Masafumi Katayama Kenichiro Donai Hisashi Shinoda Tsutomu Sekine Manabu Fukumoto Emiko Isogai 《Animal Science Journal》2016,87(6):842-847
The 2011 earthquake severely damaged the Fukushima Daiichi Nuclear Power Plant (FNPP), resulting in the release of large quantities of radioactive material into the environment. The deposition of these radionuclides in rice straw as livestock feed led to the circulation of contaminated beef in the market. Based on the safety concern of the consumers, a reliable method for estimating concentrations of radioactive cesium in muscle tissue is needed. In this study, we analyzed the concentrations of radioactive cesium in the blood and skeletal muscle of 88 cattle, and detected a linear correlation between them. We then developed software that can be used to estimate radioactive cesium concentrations in muscle tissue from blood samples. Distribution of this software to the livestock production field would allow us to easily identify high‐risk cattle, which would be beyond the safety regulation, before shipping out to the market. This software is planned to be released as freeware. This software would contribute to food safety, and aid the recovery of the livestock industry from the damage creacted by the 2011 Tohoku earthquake and tsunami. 相似文献
998.
Jessica C. Pritchard Megan E. Jacob Todd J. Ward Cameron T. Parsons Sophia Kathariou Michael W. Wood 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2016,45(2):254-259
An 11‐year‐old, male castrated, Boston Terrier was presented to the North Carolina State University College of Veterinary Medicine Small Animal Emergency Service with a 2‐day history of progressive ataxia, left‐sided head tilt, and anorexia. The dog had previously been diagnosed with chronic lymphoid leukemia and suspected immune‐mediated destruction of his bone marrow precursor cells, possibly due to therapy with immunosuppressive dosages of prednisone and azathioprine. During the physical examination, abnormal findings included an increased body temperature and horizontal nystagmus. Diagnostic investigations included a computed tomography (CT) scan, which confirmed bilateral otitis media, and a blood culture, which was positive for Listeria monocytogenes serotype 4b (epidemic clone 1). Upon treatment with ampicillin/sulbactam, enrofloxacin, and minocycline, the dog became normothermic and the neurologic signs improved. L monocytogenes serotype 4b (epidemic clone 1) has been associated with outbreaks of human listeriosis originating from food contamination. Although rare case reports of Listeria spp. infection in dogs exist, an actual infection with the epidemic clone 1 strain has never before been reported in a dog. It should be included in the differential diagnoses in immunocompromised dogs with clinical signs of septicemia. 相似文献
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Sheep grazing causes shift in sex ratio and cohort structure of Brandt's vole: Implication of their adaptation to food shortage 总被引:1,自引:0,他引:1
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![点击此处可从《Integrative zoology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Livestock grazing has been demonstrated to affect the population abundance of small rodents in grasslands, but the causative mechanism of grazing on demographic parameters, particularly the age structure and sex ratio, is rarely investigated. In this study, we examined the effects of sheep grazing on the cohort structure and sex ratio of Brandt's vole (Lasiopodomys brandtii) in Inner Mongolia of China by using large manipulative experimental enclosures during 2010–2013. Our results indicated that sheep grazing significantly decreased the proportion of the spring‐born cohort, but increased the proportion of the summer‐born cohort. Grazing increased the proportion of males in both spring and summer cohorts. In addition, we found a negative relation between population density and the proportion of the overwinter cohort. Our results suggest that a shift in the cohort structure and the sex ratio may be an important strategy for small rodents to adapt to changes in food resources resulting from livestock grazing. 相似文献