{"id":1513,"date":"2016-03-24T00:00:00","date_gmt":"2016-03-23T16:00:00","guid":{"rendered":"http:\/\/www.osaces.com\/?p=1513"},"modified":"2016-03-24T00:00:00","modified_gmt":"2016-03-23T16:00:00","slug":"jinliyuchirongyangliangjieshao","status":"publish","type":"post","link":"http:\/\/www.osaces.com\/pt\/jinliyuchirongyangliangjieshao\/","title":{"rendered":"Introdu\u00e7\u00e3o ao oxig\u00e9nio dissolvido nos lagos de carpas"},"content":{"rendered":"

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Os entusiastas dos peixes sabem que a falta de oxig\u00e9nio pode amea\u00e7ar a vida dos seus Kois, mas podem n\u00e3o se aperceber de que diferen\u00e7as subtis no Oxig\u00e9nio Dissolvido (OD) tamb\u00e9m podem alterar seriamente o crescimento dos Kois. Al\u00e9m disso, a amea\u00e7a ao efeito de auto-limpeza e filtragem do ambiente aqu\u00e1tico para as carpas pode afetar grandemente o ambiente aqu\u00e1tico em que estas se desenvolvem.<\/span><\/strong><\/p>\n

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Efeitos da concentra\u00e7\u00e3o de oxig\u00e9nio dissolvido na coluna de \u00e1gua no crescimento da carpa koi (Cyprinus carpio)<\/span><\/strong><\/p>\n

Em geral, a concentra\u00e7\u00e3o de oxig\u00e9nio dissolvido na coluna de \u00e1gua (<\/span>DO<\/span>) \u00e9 muito baixa (por litro de \u00e1gua)<\/span>8.11<\/span>~<\/span>7.53<\/span>(mg). E, quanto mais elevada for a temperatura da \u00e1gua, mais baixo ser\u00e1 o oxig\u00e9nio dissolvido. O n\u00edvel de oxig\u00e9nio dissolvido \u00e9 um fator importante que afecta a ingest\u00e3o de alimentos, a taxa de digest\u00e3o e absor\u00e7\u00e3o e a taxa de crescimento das carpas.<\/span><\/p>\n

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Oxig\u00e9nio dissolvido na \u00e1gua at\u00e9<\/span><\/strong>5<\/span><\/strong>miligrama<\/span><\/strong>\/<\/span><\/strong>O aumento do apetite das carpas \u00e9 extremamente \u00f3bvio quando o n\u00edvel de oxig\u00e9nio aumenta.<\/span><\/strong>7<\/span><\/strong>miligrama<\/span><\/strong>\/<\/span><\/strong>A taxa de crescimento das carpas em litros foi mais elevada do que em oxig\u00e9nio dissolvido<\/span><\/strong>4<\/span><\/strong>miligrama<\/span><\/strong>\/<\/span><\/strong>O coeficiente de isco ser\u00e1, por sua vez, um ter\u00e7o mais r\u00e1pido na \u00e1gua a subir e o coeficiente de isco ser\u00e1 um ter\u00e7o a meio mais baixo. Quando o n\u00edvel de oxig\u00e9nio dissolvido atinge<\/span><\/strong>6<\/span><\/strong>miligrama<\/span><\/strong>\/<\/span><\/strong>O coeficiente de isco atinge um n\u00edvel excelente quando \u00e9 superior a um litro. Quando o oxig\u00e9nio dissolvido na massa de \u00e1gua \u00e9 insuficiente, a capacidade de atividade do koi enfraquece, a qualidade do corpo diminui, a resist\u00eancia \u00e0s doen\u00e7as diminui rapidamente e a doen\u00e7a aumenta.<\/span><\/strong><\/p>\n

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Efeitos da concentra\u00e7\u00e3o de oxig\u00e9nio dissolvido no ambiente de crescimento (massa de \u00e1gua) da carpa koi<\/span><\/strong>
<\/span>O m\u00e9todo de limpeza da \u00e1gua atrav\u00e9s da ingest\u00e3o de poluentes (principalmente mat\u00e9ria org\u00e2nica) pelos microrganismos \u00e9 designado por<\/span>\"<\/span>biofiltra\u00e7\u00e3o<\/span>\"<\/span>O oxig\u00e9nio tem muito a ver com a filtra\u00e7\u00e3o biol\u00f3gica. Se a concentra\u00e7\u00e3o de oxig\u00e9nio na \u00e1gua for baixa, os microrganismos n\u00e3o se podem reproduzir, o que impede que a filtragem biol\u00f3gica funcione corretamente, deteriorando assim a qualidade da \u00e1gua. As subst\u00e2ncias nocivas e os agentes patog\u00e9nicos crescem, provocando doen\u00e7as e a morte das carpas.<\/span><\/p>\n

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No que diz respeito ao desempenho de um tanque de filtra\u00e7\u00e3o, uma grande \u00e1rea de filtra\u00e7\u00e3o \u00e9 importante, mas a sua fun\u00e7\u00e3o \u00e9 determinar se o oxig\u00e9nio pode ou n\u00e3o ser fornecido de forma adequada. \u00c9 um sistema de filtra\u00e7\u00e3o que fornece oxig\u00e9nio suficiente para que os microrganismos possam continuar a multiplicar-se e, por conseguinte, a \u00e1gua possa ser purificada de forma eficiente.Especificamente, se o meio filtrante estiver facilmente obstru\u00eddo, os poluentes, como as fezes de carpas, aderem ao meio filtrante num curto espa\u00e7o de tempo e, em seguida, os microrganismos multiplicam-se rapidamente e comem os poluentes. No entanto, \u00e0 medida que os microrganismos se multiplicam, a quantidade de oxig\u00e9nio consumido aumenta e, se o oxig\u00e9nio n\u00e3o for introduzido no meio filtrante, os microrganismos morrem subitamente por falta de oxig\u00e9nio. O oxig\u00e9nio \u00e9 introduzido no meio filtrante no sentido de formar um fluxo de \u00e1gua no meio filtrante. Se o meio filtrante estiver facilmente obstru\u00eddo, o fluxo de \u00e1gua n\u00e3o \u00e9 suficientemente amplo, pelo que os microrganismos s\u00e3o privados de oxig\u00e9nio e n\u00e3o se podem reproduzir, e o tanque do filtro \u00e9 propenso a cheirar mal (cheiro a lama).<\/span><\/strong><\/span><\/p>","protected":false},"excerpt":{"rendered":"

Os entusiastas dos peixes sabem que a priva\u00e7\u00e3o de oxig\u00e9nio pode amea\u00e7ar a vida dos seus Kois, mas podem n\u00e3o se aperceber que diferen\u00e7as subtis no Oxig\u00e9nio Dissolvido (DO) tamb\u00e9m podem alterar seriamente o crescimento dos Kois. Tamb\u00e9m para a carpa [...]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[125],"tags":[],"yoast_head":"\n\u9526\u9ca4\u9c7c\u6c60\u6eb6\u6c27\u91cf\u4ecb\u7ecd - \u5965\u5229\u4ed5\uff08\u5e7f\u5dde\uff09\u5eb7\u4f53\u8bbe\u5907\u6709\u9650\u516c\u53f8<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/www.osaces.com\/pt\/jinliyuchirongyangliangjieshao\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u9526\u9ca4\u9c7c\u6c60\u6eb6\u6c27\u91cf\u4ecb\u7ecd - \u5965\u5229\u4ed5\uff08\u5e7f\u5dde\uff09\u5eb7\u4f53\u8bbe\u5907\u6709\u9650\u516c\u53f8\" \/>\n<meta property=\"og:description\" content=\"\u9c7c\u53cb\u4eec\u90fd\u77e5\u9053\u7f3a\u6c27\u4f1a\u5a01\u80c1\u5230\u7231\u9ca4\u7684\u751f\u547d\uff0c\u5374\u53ef\u80fd\u4e0d\u77e5\u9053\u6eb6\u6c27\u5ea6\uff08DO\uff09\u7684\u7ec6\u5fae\u5dee\u5f02\u4e5f\u4f1a\u4e25\u91cd\u6539\u53d8\u9526\u9ca4\u7684\u751f\u957f\u60c5\u51b5\u3002\u540c\u65f6\u5bf9\u9526\u9ca4 […]\" \/>\n<meta property=\"og:url\" content=\"http:\/\/www.osaces.com\/pt\/jinliyuchirongyangliangjieshao\/\" \/>\n<meta property=\"og:site_name\" content=\"\u5965\u5229\u4ed5\uff08\u5e7f\u5dde\uff09\u5eb7\u4f53\u8bbe\u5907\u6709\u9650\u516c\u53f8\" \/>\n<meta property=\"article:published_time\" content=\"2016-03-23T16:00:00+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"http:\/\/www.osaces.com\/#website\",\"url\":\"http:\/\/www.osaces.com\/\",\"name\":\"\u5965\u5229\u4ed5\uff08\u5e7f\u5dde\uff09\u5eb7\u4f53\u8bbe\u5907\u6709\u9650\u516c\u53f8\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"http:\/\/www.osaces.com\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"pt-PT\"},{\"@type\":\"WebPage\",\"@id\":\"http:\/\/www.osaces.com\/jinliyuchirongyangliangjieshao\/#webpage\",\"url\":\"http:\/\/www.osaces.com\/jinliyuchirongyangliangjieshao\/\",\"name\":\"\u9526\u9ca4\u9c7c\u6c60\u6eb6\u6c27\u91cf\u4ecb\u7ecd - 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