Relação lisina digestível: energia metabolizável em dietas de suínos dos 24 aos 50 kg criados em condições de segregação sanitária: desempenho, digestibilidade e metabolismo, imunidade (parâmetros sanguíneos)

Abstract

A Deus Aos meus amados pais Luiz Carlos Fernandes de Sena e Rosmary Rosendo de Sena.A minha irmã Carla, cunhado João, meus tios, primos Ao meu querido esposo Jefferson Rodrigues Gandra, pelo companheirismo, cumplicidade e por tornar minha vida mais completa; e ao meu bebezinho que está a caminho.Aos meus pais pelo auxílio em todos os aspectos e por sempre acreditarem em mim e que posso me tornar alguém melhor, principalmente através de estudo e de aperfeiçoamento pessoal. It was studied the relationship between digestible lysine and metabolizable energy in barrows and gilts diets 24 at 50 kg body weight. The design used was randomized blocks, five treatments, eight replications, an animal for experimental unit in performance assay and four replications and an animal for experimental unit in metabolism. In blood profile assay were used design completely randomized, four replications for sex and one animal for experimental unit. The treatments were 0.80, 0.90, 1.00, 1.10 and 1.20% of digestible lysine.Performance caracteristics, digestibility and metabolism and the blood profile was studied.Quadratic effect of digesltible lysine levels was observed in body weight in swine and in feed conversion in gilts. The relative body gain, crudo protein eficience and feed conversion make better linearly for barrows. There was quadratic effect of amino acid in nitrogen excretion and retention, this effect was observed too in urine excreted energy and digestible energy. In barrows neutrophil profile and in neutrophil/lymphocyte ratio for both sexes, were quadratic response by lysine dietary. Compared with control group, there was positive effect of segregation health. The maximum barrows and gilts performance from 24 to 50 kg, by studied genotype, was obtained with 1.08% lysine digestible, but the average value corrected for digestibility and metabolism suggests 0,910% or 17.1 g amino acid per day or 2.72 g/Mcal of ME. About sanitary segregation, gilts showed greater patogens resistence with less susceptibility to stress.