Browsing by Author "PASSARELI, João"

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    Criar ou não leitões refugos
    (Centro Universitário da Fundação de Ensino Octávio Bastos, 2011-05-30) DEL SANTO, Tácia Antunes; COELHO, Felipe Pereira Moreno; MORAES, Maria Eugênia; PASSARELI, João; IVO, Marcos Alexandre
    In the current pig industry, the level of productivity is notorious, providing the offer in the market of high-performance hybrid animals, the result of advances in genetic improvement. Today, modern pig farming aims at the maximum viable piglets / sow / year, but it is known that numerous piglets generate low viability animals (lower birth weight / refuse), not being a favorable resource for pig production. There are also other factors that can influence birth weight and compromise the herd. The purpose of the review is to address the characteristics of piglets with lower birth weight and the factors that interfere with their satisfactory performance until slaughter.
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    Uso de aminoácidos sintéticos na nutrição de fêmeas suínas prolíficas
    (Centro Universitário da Fundação de Ensino Octávio Bastos, 2011-05-30) DEL SANTO, Tácia Antunes; COELHO, Felipe Pereira Moreno; MORAES, Maria Eugênia; PASSARELI, João; IVO, Marcos Alexandre
    The high productivity in swine breeding provides a supply of high-performance hybrid animals, the result of advances in genetic improvement. These animals, however, become more demanding, because when expressing characteristics of high productive and reproductive performance, they need a nutritional contribution that is properly interrelated with the different stages of development. The literature shows in this interrelationship nutrition and stages of reproduction in swine, a small number of studies, particularly with regard to the use of synthetic amino acids in diets of swine females during gestation. Studies have shown that the addition of synthetic amino acid to the diet of pregnant swine females contributes to a decrease in the consumption of crude protein, making the cost of production more economical. The aim of the present review is to discuss the use of synthetic amino acids in diets of high-performance and reproductive female swine in view of the requirements that this animal category needs.