6,417 research outputs found

    Effects of Different Levels of Energy Supplementation on Growth of Grazing Holstein Heifers

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    Growth of Holstein heifers was studied for 1987 grazing season to evaluate pasture-drylot systems for raising dairy replacements. Orchardgrass (Dactylis glomerata L), tall fescue (Festuca arundinacea Schreb), bluegrass (Poa pratensis L) and white (Trifolium repens L) and red clover (Trifolium pratense, L) were the principal components of the grass-legume mixture in six paddocks of 1.5 ha each. Carrying capacity was estimated at six animals/ha (3.1 animal units) and excess forage was harvested as hay to control forage growth and quality. Grazing days were 140 days. None or 2.0 kg/d of cracked corn were fed in addition to grazing in a changeover design with repeated measurements. Alternating supplementation between groups did not affect body weight gains, wither height or heart girth although average daily gain was greater when corn was fed (837 vs 581 g/d)

    Effects of Different Levels of Energy on Growth of Grazing and Drylot Fed Holstein Heifers

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    Growth of Holstein heifers were studied to evaluate the combination of a drylot phase followed by feeding energy for pasture supplementation during the grazing season of 1988. Heifers grazed a grass-legume mixture in six paddocks of 1.5 ha each. After drylot, animals were equally allotted to pasture and none or 2.0 kg/d of corn were fed in addition to grazing in a changeover design with repeated measurements. Heifers were fed a high (HE) or low energy (LE) diets in confinement and daily gains were 1190 (HE) and 990 g/day (LE) which were different. On pasture, corn supplementation did not enhance weight gain overall, but did result in greater gains in lighter animals that were previously fed the LE confinement diet. Heavy and light heifers on previously HE diet gained more than heifers previously on LE diet (358 vs 486 g/d)

    Classificação de bovinos em função de suas medidas lineares obtidas com processamento de imagens digitais.

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    Este trabalho apresenta um sistema informatizado que automatiza a obtenção de medidas lineares em bovinos, com o uso de técnicas do processamento de imagens digitais, bem como viabiliza a classificação com procedimentos estatísticos Bayesianos. Resultados obtidos com estudo de casos mostraram a sensibilidade do método para a classificação e indicação de classes de populações de bovinos reprodutores, de corte, leiteiro ou ainda classes rejeitadas. A opção pelo desenvolvimento no ambiente C++ Builder forneceu funcionalidades e facilidades operativas devido à utilização de menus, o que tornou o sistema amigável e viável para qualificar um método para a classificação de bovinos, o que é de interesse para o segmento agropecuário

    Eficiência do processo de biodigestão em fossa séptica biodigestora inoculada com esterco de ovino.

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    bitstream/CNPDIA-2009-09/11043/1/DOC34_2007.pd

    Sistema de produção de leite a pasto com rebanho mestiço: 25 anos de informações.

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    bitstream/item/132493/1/Livro-Sistema-de-producao-de-leite-a-pasto-25-anos.pd

    Stephanofilaria sp em bovinos do município de São Carlos, Estado de São Paulo.

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    Estudos clínicas e laboratórios em ulceras do tipo "Chagas de Verão" em bovinos do Município de São Carlos. Observou-se uma dermatite nodular ulcerativa na região da quartela, jarrete, cruz, cabeça, teta, paleta

    Recria de animais leiteiros em pastagem de capim-gordura da Zona da Mata de Minas Gerais.

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    bitstream/item/142975/1/2012.pd

    Cria e recria de fêmeas leiteiras: passo a passo.

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    bitstream/item/65395/1/COT-30-Cria-e-recria-de-femeas-leiteiras.pd
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