The optimised use of mixed crude glycerin (MCG) and ractopamine hydrochloride (RH) in diets for finishing pigs requires a better understanding of glycerol metabolism. Therefore, the present study evaluated the performance, blood parameters, metabolite concentrations in the Longissimus lumborum muscle and the activity of enzymes in the liver, subcutaneous adipose tissue and kidney of pigs fed diets containing MCG and/or RH. According to the initial weight, 64 barrows were distributed in a 4 × 2 factorial design, corresponding to four concentrations of MCG (0, 100, 150, and 200 g/kg) in diets containing 0 or 10 mg/kg of RH. There was no MCG × RH interaction for any of the evaluated parameters (P > 0.05). Moreover, there was no isolated effect of dietary MCG or RH on the weight gain and the blood concentrations of glucose, insulin, triacylglycerols, total cholesterol, total protein, albumin, creatinine, cortisol and lactate (P > 0.05). There was a higher rate of phosphorylation of glycerol in the liver, stimulation of lipogenesis in adipose tissue and a likely increase in the utilisation of glycerol by muscle fibres in response to an increased concentration of circulating glycerol from the diet (P < 0.05). In contrast, when the diet contained up to 200 g/kg MCG and 10 mg/kg RH, there were indications of a lower utilisation of glycerol for the synthesis of triacylglycerols in muscle, liver and adipose tissue, in addition to increased oxidation of amino acids in the liver followed by improved feed conversion of pigs (P < 0.05).

Este trabalho tem o objetivo de discutir como o racismo apareceu em entrevistas concedidas à Placar, revista especializada em esportes, por jogadores profissionais de futebol. Como metodologia foram escolhidas, analisadas e discutidas 10 entrevistas entre os anos de 1970 e 2008. A seleção foi realizada de maneira aleatória. Percebemos ao longo do texto o modo com que os jogadores apresentaram suas experiências e percepções sobre o racismo, assim como o quanto cada qual conferiu peso a este fato para suas carreiras profissionais e suas respectivas vidas. Desta forma, mobilizamos alguns conceitos a respeito do tema para relacionar aos eventos indicados.