{"id":28449,"date":"2024-03-01T08:00:25","date_gmt":"2024-03-01T11:00:25","guid":{"rendered":"https:\/\/rehagro.com.br\/blog\/?p=28449"},"modified":"2026-04-09T19:44:44","modified_gmt":"2026-04-09T22:44:44","slug":"penn-state","status":"publish","type":"post","link":"https:\/\/rehagro.com.br\/blog\/penn-state\/","title":{"rendered":"Como e quando utilizar a Penn State na fazenda?"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Com base em estimativas do MAPA, o Brasil possui mais de 1 milh\u00e3o de propriedades produtoras de leite, distribu\u00eddas em 98% dos munic\u00edpios do pa\u00eds. Considerando essas estat\u00edsticas, projeta-se que, at\u00e9 2030, apenas as propriedades mais eficientes e que melhor adotarem as novas tecnologias permanecer\u00e3o competitivas no mercado.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Para alcan\u00e7ar a efici\u00eancia na produ\u00e7\u00e3o leiteira, a <\/span><b>alimenta\u00e7\u00e3o do rebanho<\/b><span style=\"font-weight: 400;\"> destaca-se como <\/span><b>um dos maiores custos<\/b><span style=\"font-weight: 400;\">. Al\u00e9m disso, ela representa uma das \u00e1reas mais complexas e dispendiosas, demandando cuidado tanto no <\/span><b>planejamento da produ\u00e7\u00e3o quanto na gest\u00e3o di\u00e1ria.<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Assim, o planejamento cuidadoso torna-se crucial para determinar o tipo de cultura a ser plantada, a forma e o momento de preparar a silagem, a dura\u00e7\u00e3o e a qualidade da fermenta\u00e7\u00e3o, a propor\u00e7\u00e3o adequada de nutrientes e o tamanho das part\u00edculas. Essas considera\u00e7\u00f5es s\u00e3o fundamentais para viabilizar o <\/span><b>manejo nutricional eficaz<\/b><span style=\"font-weight: 400;\"> do rebanho.\u00a0<\/span><\/p>\n<div style=\"background-color: #efefef; padding-left: 10px; padding-right: 5px; border-radius: 10px;\">\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><strong><span style=\"font-size: 14pt;\">Sem tempo para ler agora? Baixe este artigo em PDF!<\/span><\/strong><\/p>\n<p><script charset=\"utf-8\" type=\"text\/javascript\" src=\"\/\/js.hsforms.net\/forms\/embed\/v2.js\"><\/script><br \/>\n<script>\nhbspt.forms.create({\nregion: \"na1\",\nportalId: \"5430441\",\nformId: \"5c98e9f8-1021-46c5-b460-16cdc5aef0f7\"\n});\n<\/script><\/p>\n<\/div>\n<p><span style=\"font-weight: 400;\">Nesse cen\u00e1rio, diversas ferramentas e t\u00e9cnicas s\u00e3o empregadas para auxiliar nesse planejamento, destacando-se a <\/span><b><i>Penn State Particle Separator<\/i><\/b><span style=\"font-weight: 400;\"> (Separador de part\u00edculas Penn State). <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Desenvolvido na Universidade do Estado da Pensilv\u00e2nia em 1996, esse sistema se trata de um conjunto de peneiras essencial para <\/span><b>avaliar o tamanho das part\u00edculas em forragens e ra\u00e7\u00f5es misturadas totais<\/b><span style=\"font-weight: 400;\"> (TMR), possibilitando a estimativa da porcentagem de TMR que fornece fibra fisicamente efetiva (peNDF) na dieta do rebanho.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-28456 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-5.jpg\" alt=\"Penn state\" width=\"600\" height=\"400\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-5.jpg 600w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-5-300x200.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-5-370x247.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-5-270x180.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-5-150x100.jpg 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/span><\/p>\n<h2>Qual a import\u00e2ncia de saber o tamanho das part\u00edculas?<\/h2>\n<p><span style=\"font-weight: 400;\">Os bovinos exibem um not\u00e1vel processamento alimentar, impulsionado pelo <\/span><a href=\"https:\/\/rehagro.com.br\/blog\/fisiologia-do-rumen-dos-bovinos\/\" target=\"_blank\" rel=\"noopener\"><b>ecossistema ruminal<\/b><\/a><span style=\"font-weight: 400;\"> repleto de bact\u00e9rias, protozo\u00e1rios, bacteri\u00f3fagos, entre outros. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Esse ambiente permite a eficiente transforma\u00e7\u00e3o dos alimentos e a s\u00edntese de enzimas e vitaminas essenciais para o organismo, destacando-se o papel fundamental da fermenta\u00e7\u00e3o. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Realizada por <\/span><b>bact\u00e9rias anaer\u00f3bicas<\/b><span style=\"font-weight: 400;\">, esse processo utiliza substratos alimentares para gerar <\/span><b>\u00e1cidos graxos vol\u00e1teis<\/b><span style=\"font-weight: 400;\"> (AGVs), vitais na fisiologia animal.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Para assegurar um processamento alimentar adequado, especialmente no r\u00famen, \u00e9 importante <\/span><b>manter uma composi\u00e7\u00e3o e tamanho de part\u00edculas apropriados<\/b><span style=\"font-weight: 400;\"> na dieta. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">O tamanho das part\u00edculas desempenha um papel essencial na disponibilidade do substrato alimentar para os microrganismos, ao mesmo tempo em que promove a forma\u00e7\u00e3o de um tapete ruminal. Esse tapete cria um ambiente prop\u00edcio \u00e0 prolifera\u00e7\u00e3o e prote\u00e7\u00e3o das bact\u00e9rias anaer\u00f3bicas, contribuindo assim para a efic\u00e1cia do sistema digestivo dos ruminantes.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-28458 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-6.jpg\" alt=\"M\u00e3os segurando uma ra\u00e7\u00e3o misturada total (TMR)\" width=\"747\" height=\"439\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-6.jpg 747w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-6-300x176.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-6-370x217.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-6-270x159.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-6-740x435.jpg 740w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-6-150x88.jpg 150w\" sizes=\"auto, (max-width: 747px) 100vw, 747px\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"font-size: 12px;\"><span style=\"font-weight: 400;\">Imagem demonstrando uma ra\u00e7\u00e3o misturada total (TMR). <\/span><span style=\"font-weight: 400;\">Fonte: Hoard&#8217;s Dairyman Intel (2020)<\/span><\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Al\u00e9m disso, o particulado influencia diretamente no <\/span><b>pH ruminal<\/b><span style=\"font-weight: 400;\">, de modo que, quanto <\/span><b>menor s\u00e3o as part\u00edculas<\/b> <b>menor \u00e9 o tempo de mastiga\u00e7\u00e3o<\/b><span style=\"font-weight: 400;\">, o que por sua vez resulta na <\/span><b>redu\u00e7\u00e3o do est\u00edmulo \u00e0 produ\u00e7\u00e3o de saliva<\/b><span style=\"font-weight: 400;\">. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">A saliva, al\u00e9m de umidificar o bolo alimentar, age como um tamponante \u00e1cido-base do r\u00famen, sendo essencial para proteger contra a redu\u00e7\u00e3o excessiva do pH. Essa a\u00e7\u00e3o \u00e9 particularmente significativa em vacas leiteiras de alta produ\u00e7\u00e3o, que consomem ra\u00e7\u00f5es ricas em energia.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Outro aspecto a ser pontuado \u00e9 a propor\u00e7\u00e3o de fibra em detergente neutro (FDN) na dieta. Uma adequada rela\u00e7\u00e3o de FDN n\u00e3o apenas favorece a atividade ruminal normal, mas tamb\u00e9m previne a diminui\u00e7\u00e3o da gordura do leite e problemas de sa\u00fade associados \u00e0 <a href=\"https:\/\/rehagro.com.br\/blog\/acidose-ruminal-em-vacas-leiteiras\/\" target=\"_blank\" rel=\"noopener\"><strong>acidose ruminal<\/strong><\/a>. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Mesmo quando a dieta cont\u00e9m quantidades suficientes de FDN, se ela for processada de maneira a resultar em part\u00edculas muito finas, a fibra fisicamente efetiva (peNDF) diminui, ocasionando irregularidades na din\u00e2mica mec\u00e2nica e f\u00edsico-qu\u00edmica do processamento alimentar no r\u00famen.<\/span><\/p>\n<p><a href=\"https:\/\/webinar.rehagro.com.br\/silagem-de-milho-e-os-impactos-na-producao-de-leite?utm_campaign=material-leite&amp;utm_source=webinar-ferraretto&amp;utm_medium=blog\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-38527 size-full\" title=\"Clique e acesse gratuitamente!\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/09\/webinar-silagem-ferraretto.png\" alt=\"Webinar impacto da silagem na produ\u00e7\u00e3o de leite\" width=\"1024\" height=\"359\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/09\/webinar-silagem-ferraretto.png 1024w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/09\/webinar-silagem-ferraretto-300x105.png 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/09\/webinar-silagem-ferraretto-768x269.png 768w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/09\/webinar-silagem-ferraretto-370x130.png 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/09\/webinar-silagem-ferraretto-270x95.png 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/09\/webinar-silagem-ferraretto-740x259.png 740w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/09\/webinar-silagem-ferraretto-150x53.png 150w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<h2>Quando utilizar a Penn State?<\/h2>\n<p><span style=\"font-weight: 400;\">Considerando a relev\u00e2ncia da an\u00e1lise do particulado na dieta dos ruminantes, a <\/span><i><span style=\"font-weight: 400;\">Penn State<\/span><\/i><span style=\"font-weight: 400;\"> pode ser utilizada em duas situa\u00e7\u00f5es espec\u00edficas. Primeiramente, \u00e9 empregado para determinar o <\/span><b>ajuste da ensiladeira durante a colheita<\/b><span style=\"font-weight: 400;\">. Cortar a forragem no comprimento apropriado resulta em forragens que podem ser combinadas de forma a atender ao tamanho de part\u00edcula desejado.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Portanto, deve-se ajustar as l\u00e2minas conforme o tamanho adequado para a formula\u00e7\u00e3o. E \u00e9 neste contexto, que a <\/span><i><span style=\"font-weight: 400;\">Penn State<\/span><\/i><span style=\"font-weight: 400;\"> se destaca como uma ferramenta f\u00e1cil e eficiente para analisar e corrigir a dist\u00e2ncia entre as facas, garantindo o corte preciso da forragem.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-28454 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/capa-penn-state.jpg\" alt=\"Utiliza\u00e7\u00e3o da penn state\" width=\"1040\" height=\"480\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/capa-penn-state.jpg 1040w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/capa-penn-state-300x138.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/capa-penn-state-1024x473.jpg 1024w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/capa-penn-state-768x354.jpg 768w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/capa-penn-state-370x171.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/capa-penn-state-270x125.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/capa-penn-state-740x342.jpg 740w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/capa-penn-state-150x69.jpg 150w\" sizes=\"auto, (max-width: 1040px) 100vw, 1040px\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"font-size: 12px;\"><span style=\"font-weight: 400;\">Imagem ilustrando a utiliza\u00e7\u00e3o da <\/span><i><span style=\"font-weight: 400;\">Penn State<\/span><\/i><span style=\"font-weight: 400;\"> durante o processo de ensilagem de milho.\u00a0<\/span><span style=\"font-weight: 400;\">Fonte: Acervo Rehagro<\/span><\/span><\/p>\n<p><span style=\"font-weight: 400;\">Al\u00e9m de ser utilizado durante a confec\u00e7\u00e3o da silagem, a <\/span><i><span style=\"font-weight: 400;\">Penn State<\/span><\/i><span style=\"font-weight: 400;\"> tamb\u00e9m desempenha um papel importante na <\/span><a href=\"https:\/\/rehagro.com.br\/blog\/dietas-para-bovinos-leiteiros\/\" target=\"_blank\" rel=\"noopener\"><b>formula\u00e7\u00e3o da ra\u00e7\u00e3o<\/b><\/a><span style=\"font-weight: 400;\">. Dependendo da composi\u00e7\u00e3o espec\u00edfica da ra\u00e7\u00e3o, \u00e9 essencial compreender as propor\u00e7\u00f5es ideais das part\u00edculas.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Por exemplo, quando a forragem \u00e9 exclusivamente de <a href=\"https:\/\/rehagro.com.br\/blog\/producao-de-silagem-de-milho-com-qualidade-voce-sabe-como-fazer\/\" target=\"_blank\" rel=\"noopener\"><strong>silagem de milho<\/strong><\/a>, 8% das part\u00edculas devem ser retidas na peneira superior do separador. Se a silagem de milho n\u00e3o for a \u00fanica forragem utilizada, esse valor \u00e9 ajustado para 3%. A compreens\u00e3o dessas nuances \u00e9 fundamental para extrair o m\u00e1ximo potencial nutricional da ra\u00e7\u00e3o.<\/span><\/p>\n<h2>Como utilizar o penn state?<\/h2>\n<p><b>Passo 1)<\/b> <span style=\"font-weight: 400;\">O primeiro passo consiste em preparar os materiais que ser\u00e3o utilizados na mensura\u00e7\u00e3o. Para isso, \u00e9 necess\u00e1rio contar com uma balan\u00e7a de precis\u00e3o e uma vasilha adequada para acomodar a amostra a ser mensurada. Al\u00e9m disso, deve-se montar a <\/span><i><span style=\"font-weight: 400;\">Penn State<\/span><\/i><span style=\"font-weight: 400;\">, equipando-o com as quatro peneiras.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-28459 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-4.jpg\" alt=\"Peneiras juntamente com os utens\u00edlios necess\u00e1rios para a utiliza\u00e7\u00e3o\" width=\"271\" height=\"303\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-4.jpg 271w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-4-268x300.jpg 268w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-4-150x168.jpg 150w\" sizes=\"auto, (max-width: 271px) 100vw, 271px\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"font-weight: 400; font-size: 12px;\">Imagem das peneiras juntamente com os utens\u00edlios necess\u00e1rios para a utiliza\u00e7\u00e3o.\u00a0<\/span><\/p>\n<p><b>Passo 2)<\/b> <span style=\"font-weight: 400;\">Separe uma <\/span><b>amostra representativa<\/b><span style=\"font-weight: 400;\"> de silagem ou da dieta total e pese. Recomenda-se utilizar como padr\u00e3o de pesagem <\/span><b>500g de amostra<\/b><span style=\"font-weight: 400;\">, mas este valor n\u00e3o \u00e9 fixo, podendo ser ajustado conforme a necessidade.<\/span><\/p>\n<p><b>Passo 3)<\/b> <span style=\"font-weight: 400;\">Monte a <\/span><i><span style=\"font-weight: 400;\">Penn State<\/span><\/i><span style=\"font-weight: 400;\"> em uma superf\u00edcie plana, empilhando as quatro caixas separadoras uma sobre as outras na seguinte ordem:\u00a0<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">Peneira com os furos maiores (peneira superior);<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Peneira com furos m\u00e9dios (peneira do meio);<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Peneiras com furos menores (peneira inferior);<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Panela s\u00f3lida no fundo.<\/span><\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-28460 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-7.jpg\" alt=\"Peneiras com presen\u00e7a de silagem de milho antes do in\u00edcio das movimenta\u00e7\u00f5es\" width=\"573\" height=\"560\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-7.jpg 573w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-7-300x293.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-7-370x362.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-7-270x264.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-7-307x300.jpg 307w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-7-150x147.jpg 150w\" sizes=\"auto, (max-width: 573px) 100vw, 573px\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"font-size: 12px;\"><span style=\"font-weight: 400;\">Peneiras com presen\u00e7a de silagem de milho antes do in\u00edcio das movimenta\u00e7\u00f5es.\u00a0<\/span><span style=\"font-weight: 400;\">Fonte: Nutri\u00e7\u00e3o Animal\u00a0<\/span><\/span><\/p>\n<p><span style=\"font-weight: 400;\">Adicione a amostra na primeira peneira e agite as peneiras em uma dire\u00e7\u00e3o por <\/span><b>5 vezes<\/b><span style=\"font-weight: 400;\">, evitando qualquer movimento vertical. Em seguida, gire a caixa um quarto de volta e repita o processo por 7 vezes. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">A for\u00e7a e a frequ\u00eancia da agita\u00e7\u00e3o devem ser suficientes para deslizar as part\u00edculas sobre a superf\u00edcie da peneira, permitindo que aquelas menores que o tamanho dos poros caiam. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ao final, ser\u00e3o realizadas <\/span><b>40 batidas em 8 s\u00e9ries, girando o separador ap\u00f3s cada s\u00e9rie de 5 batidas<\/b><span style=\"font-weight: 400;\">, conforme exemplificado na imagem abaixo.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-28461 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-2.jpg\" alt=\"Padr\u00e3o de agita\u00e7\u00e3o das peneiras no sistema penn state\" width=\"600\" height=\"223\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-2.jpg 600w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-2-300x112.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-2-370x138.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-2-270x100.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-2-150x56.jpg 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"font-size: 12px;\"><span style=\"font-weight: 400;\">Padr\u00e3o de agita\u00e7\u00e3o das peneiras.\u00a0<\/span><span style=\"font-weight: 400;\">Fonte: Penn state extension<\/span><\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00c9 poss\u00edvel adaptar um trilho ou uma guia para facilitar os movimentos na superf\u00edcie. Este dispositivo \u00e9 posicionado embaixo das caixas, permitindo que sejam deslizadas horizontalmente ao longo de sua extens\u00e3o. Certifique-se de que o trilho esteja completamente nivelado e sem irregularidades na superf\u00edcie de contato com a \u00faltima caixa.<\/span><\/p>\n<p><b>Passo 4)<\/b><span style=\"font-weight: 400;\"> Ap\u00f3s realizar o batimento, desacople as peneiras e pese o conte\u00fado de cada uma separadamente. Assim que tiver a pesagem, fa\u00e7a uma regra de 3 para calcular a porcentagem em cada uma das reparti\u00e7\u00f5es mensuradas, como mostrado na imagem abaixo.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-28486\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-1.jpg\" alt=\"\" width=\"686\" height=\"478\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-1.jpg 686w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-1-300x209.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-1-370x258.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-1-270x188.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-1-150x105.jpg 150w\" sizes=\"auto, (max-width: 686px) 100vw, 686px\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"font-weight: 400; font-size: 12px;\">Regra de 3 para achar as porcentagens de cada por\u00e7\u00e3o da peneira.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Monte uma tabela com os valores calculados (Tabela 1), e compare com os valores de refer\u00eancia estabelecidos, segundo a composi\u00e7\u00e3o de sua dieta total ou o tipo de silagem (tabela 2).\u00a0<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-28463 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-10.jpg\" alt=\"Tabela com os valores calculados por regra de 3 ap\u00f3s a pesagem fict\u00edcia de silagem de milho.\" width=\"640\" height=\"117\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-10.jpg 640w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-10-300x55.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-10-370x68.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-10-270x49.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-10-150x27.jpg 150w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"font-weight: 400; font-size: 12px;\">Tabela 1. Valores Calculados por regra de 3 ap\u00f3s a pesagem fict\u00edcia de silagem de milho.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-28464 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-9.jpg\" alt=\"Tabela com os valores padronizados pela Pennstate extension.\" width=\"781\" height=\"116\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-9.jpg 781w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-9-300x45.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-9-768x114.jpg 768w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-9-370x55.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-9-270x40.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-9-740x110.jpg 740w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-9-150x22.jpg 150w\" sizes=\"auto, (max-width: 781px) 100vw, 781px\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"font-size: 12px;\"><span style=\"font-weight: 400;\">Tabela 2. Valores padronizados pela <\/span><i><span style=\"font-weight: 400;\">Penn state extension<\/span><\/i><span style=\"font-weight: 400;\">.<\/span><\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ao comparar as tabelas, \u00e9 vi\u00e1vel determinar se tanto a dieta total quanto a silagem est\u00e3o dentro da granulometria adequada para uso. Essencialmente, \u00e9 importante analisar a composi\u00e7\u00e3o e\/ou a maturidade tanto da dieta total quanto da silagem fornecida, pois esses fatores podem modificar os valores de refer\u00eancia.<\/span><\/p>\n<p><b>Passo adicional:<\/b> p<span style=\"font-weight: 400;\">ara uma an\u00e1lise mais profunda, \u00e9 poss\u00edvel fazer a plotagem de um gr\u00e1fico de Particular x Porcentagem, sendo poss\u00edvel ter uma melhor visualiza\u00e7\u00e3o da distribui\u00e7\u00e3o das part\u00edculas.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-28465 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-8.jpg\" alt=\"Gr\u00e1fico ilustrando a distribui\u00e7\u00e3o dos tamanhos das part\u00edculas em rela\u00e7\u00e3o ao percentual acumulado total\" width=\"504\" height=\"500\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-8.jpg 504w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-8-300x298.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-8-150x149.jpg 150w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-8-370x367.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-8-270x268.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-8-302x300.jpg 302w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-8-96x96.jpg 96w\" sizes=\"auto, (max-width: 504px) 100vw, 504px\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"font-size: 12px;\">Fonte: <i>Penn state extension<\/i><\/span><\/p>\n<p><span style=\"font-weight: 400; font-size: 16px;\">O gr\u00e1fico ilustra a distribui\u00e7\u00e3o dos tamanhos das part\u00edculas em rela\u00e7\u00e3o ao percentual acumulado total. Na amostra exemplificada, observa-se que 95% das part\u00edculas t\u00eam um tamanho de 0,75 polegadas, 55% possuem tamanho de 0,31 polegadas e aproximadamente 35% t\u00eam tamanho de 0,16 polegadas.<\/span><\/p>\n<p><span style=\"font-weight: 400; font-size: 16px;\">Eixo X: Representa o tamanho das part\u00edculas em polegadas;<\/span><\/p>\n<p><span style=\"font-weight: 400; font-size: 16px;\">Eixo Y: Indica o percentual acumulado dentro da amostra subdimensionada.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A Universidade do Estado da Pensilv\u00e2nia, atrav\u00e9s do <\/span><i><span style=\"font-weight: 400;\">Penn State College of Agricultural Sciences<\/span><\/i><span style=\"font-weight: 400;\">, oferece <a href=\"https:\/\/extension.psu.edu\/penn-state-particle-separator#section-16\" target=\"_blank\" rel=\"noopener\"><strong>planilhas em ingl\u00eas e espanhol<\/strong><\/a>. Essas planilhas possibilitam a inclus\u00e3o da granulometria da dieta, permitindo a compara\u00e7\u00e3o autom\u00e1tica dos valores e refer\u00eancias, bem como a cria\u00e7\u00e3o de gr\u00e1ficos.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-28466 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-3.jpg\" alt=\"Planilha da Penn State College of Agricultural Sciences\" width=\"1346\" height=\"621\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-3.jpg 1346w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-3-300x138.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-3-1024x472.jpg 1024w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-3-768x354.jpg 768w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-3-370x171.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-3-270x125.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-3-740x341.jpg 740w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2024\/02\/penn-state-3-150x69.jpg 150w\" sizes=\"auto, (max-width: 1346px) 100vw, 1346px\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"font-size: 12px;\"><span style=\"font-weight: 400;\">Planilha dispon\u00edvel no site da <\/span><i><span style=\"font-weight: 400;\">Penn state extension.<\/span><\/i><\/span><\/p>\n<h2>Considera\u00e7\u00f5es finais<\/h2>\n<p><span style=\"font-weight: 400;\">Portanto, \u00e9 importante ressaltar que a utiliza\u00e7\u00e3o da <\/span><i><span style=\"font-weight: 400;\">Penn State<\/span><\/i><span style=\"font-weight: 400;\"> \u00e9 uma ferramenta valiosa na confec\u00e7\u00e3o e formula\u00e7\u00e3o das dietas para vacas leiteiras. Isso se deve, principalmente, \u00e0 sua capacidade de proporcionar uma an\u00e1lise precisa dos valores de FDN, resultando em uma melhoria na efic\u00e1cia da utiliza\u00e7\u00e3o dos alimentos em rela\u00e7\u00e3o \u00e0 produ\u00e7\u00e3o e na preven\u00e7\u00e3o da acidose ruminal. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Destaca-se que a consultoria de um t\u00e9cnico em nutri\u00e7\u00e3o animal \u00e9 essencial para a correta realiza\u00e7\u00e3o do teste, bem como para auxiliar na interpreta\u00e7\u00e3o e no planejamento nutricional da fazenda.<\/span><\/p>\n<h2>Use ferramentas com precis\u00e3o e transforme dados em resultados<\/h2>\n<p>A aplica\u00e7\u00e3o correta da Penn State \u00e9 essencial para avaliar a dieta, otimizar a efici\u00eancia alimentar e aumentar a produtividade do rebanho.<\/p>\n<p>Na <strong><a href=\"https:\/\/rehagro.com.br\/cursos\/pos-graduacao-em-pecuaria-leiteira?utm_campaign=mkt-materiais-pl&amp;utm_source=textos&amp;utm_medium=blog\">P\u00f3s-gradua\u00e7\u00e3o em Pecu\u00e1ria Leiteira<\/a><\/strong> do Rehagro, voc\u00ea aprende a utilizar indicadores, ferramentas e t\u00e9cnicas de manejo para tomar decis\u00f5es mais assertivas e lucrativas na fazenda.<\/p>\n<p><a href=\"https:\/\/rehagro.com.br\/cursos\/pos-graduacao-em-pecuaria-leiteira?utm_campaign=mkt-materiais-pl&amp;utm_source=textos&amp;utm_medium=blog\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-18727 size-full\" title=\"Clique e saiba mais sobre o curso!\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/03\/banner-pl.jpg\" alt=\"Banner P\u00f3s-gradua\u00e7\u00e3o em Pecu\u00e1ria Leiteira\" width=\"980\" height=\"317\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/03\/banner-pl.jpg 980w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/03\/banner-pl-300x97.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/03\/banner-pl-768x248.jpg 768w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/03\/banner-pl-370x120.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/03\/banner-pl-270x87.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/03\/banner-pl-740x239.jpg 740w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/03\/banner-pl-150x49.jpg 150w\" sizes=\"auto, (max-width: 980px) 100vw, 980px\" \/><\/a><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-23116\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/08\/eliel-scavazzini.jpg\" alt=\"Eliel Scavazzini - Equipe Leite Rehagro\" width=\"300\" height=\"96\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/08\/eliel-scavazzini.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/08\/eliel-scavazzini-270x86.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/08\/eliel-scavazzini-150x48.jpg 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Com base em estimativas do MAPA, o Brasil possui mais de 1 milh\u00e3o de propriedades produtoras de leite, distribu\u00eddas em 98% dos munic\u00edpios do pa\u00eds. Considerando essas estat\u00edsticas, projeta-se que, at\u00e9 2030, apenas as propriedades mais eficientes e que melhor adotarem as novas tecnologias permanecer\u00e3o competitivas no mercado. Para alcan\u00e7ar a efici\u00eancia na produ\u00e7\u00e3o leiteira, [&hellip;]<\/p>\n","protected":false},"author":23,"featured_media":28454,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[214],"tags":[419,276,1176,471],"class_list":["post-28449","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-leite","tag-dieta","tag-pecuaria-leiteira","tag-penn-state","tag-vacas-leiteiras"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Penn State: o que \u00e9 e quando utilizar na fazenda?<\/title>\n<meta name=\"description\" content=\"A penn state \u00e9 um conjunto de peneiras essencial para avaliar o tamanho das part\u00edculas em forragens e ra\u00e7\u00f5es misturadas totais. 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