|Author||Júnior, Marco A. P. Orrico ♦ Orrico, Ana C. A. ♦ Júnior, Jorge De Lucas|
|Source||Directory of Open Access Journals (DOAJ)|
|Publisher||Sociedade Brasileira de Engenharia Agrícola|
|File Format||HTM / HTML|
|Language||English ♦ Spanish ♦ Portuguese|
|Subject Domain (in LCC)||S1-972|
|Subject Keyword||Agriculture ♦ Waste ♦ Conversão alimentar ♦ Resíduos ♦ Food conversion ♦ Residue coefficient ♦ Coeficiente de resíduo|
|Abstract||O objetivo do trabalho foi efetuar a comparação das principais espécies de interesse agropecuário, em relação à eficiência de conversão das dietas em produtos de origem animal (carne ou ovo), produção de resíduo e potencial de emissão de metano, a partir da fermentação dos resíduos. Para isso, foram selecionadas cinco espécies de animais durante a fase de produção: 1) suínos, do nascimento ao abate (peso vivo (PV) final de 90 kg) ; 2) bovinos, do desmame ao abate (PV: 520 kg); 3) caprinos, do desmame ao abate (PV: 30 kg); 4) aves, durante toda a fase de postura (14,7 kg de ovos); 5) frango de corte, do nascimento ao abate (PV: 3,1 kg). Para a estimativa dos parâmetros propostos, foram medidos os dados do desempenho e efetuou-se a biodigestão anaeróbia dos dejetos produzidos pelos animais. De maneira geral, os dejetos dos ruminantes apresentaram altas concentrações de fibra e baixos potenciais de produção de biogás; no entanto, o menor desempenho destes animais na conversão do alimento em produto e a maior produção de dejetos fizeram com que eles apresentassem maiores produções de metano por kg de alimento produzido.The aim of this study was to compare the main species of husbandry interest, in relation to the efficiency of food conversion into animal origin products (meat and egg), residue production and potential of methane emission from residue fermentation. This way, five species of animal during production phase were selected: 1) pigs, from birth to slaughter (final live weight (LW) of 90 kg); 2) cattle, from weaning to slaughter (LW: 520 kg); 3) goat, from weaning to slaughter (LW: 30 kg); 4) poultry, during the complete phase of laying (14.7 kg of eggs); 5 ) broiler, from birth to slaughter (LW: 3.1 Kg). For estimating proposed parameters, data of performance were measured and anaerobic digestion of produced waste by animals was done. In a general way, ruminant waste showed height concentration of fiber and low potential of biogas production, although the lower performance of those animals in the conversion of food into the product and increased production of waste, made that those animals showed greater production of methane per kg of produced food.|
|Age Range||18 to 22 years ♦ above 22 year|
|Education Level||UG and PG ♦ Career/Technical Study|
|Learning Resource Type||Article|
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