Biodisponibilidade de fósforo em fosfatos e níveis de fósforo disponível para suínos na fase inicial

• Ano de defesa: 2008
• Autor(a) principal: Viana, Joseane Moutinho
• Orientador(a): Brustolini, Paulo César
• Banca de defesa: Silva, Francisco Carlos de Oliveira , Lanna, Eduardo Arruda Teixeira
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Viçosa
• Programa de Pós-Graduação: Mestrado em Zootecnia
• Departamento: Genética e Melhoramento de Animais Domésticos; Nutrição e Alimentação Animal; Pastagens e Forragicul
• País: BR
• Palavras-chave em Português: Suíno; Minerais; Nutrição
• Palavras-chave em Inglês: Swine; Minerals; Nutrition
• Área do conhecimento CNPq: CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA::NUTRICAO E ALIMENTACAO ANIMAL
• Link de acesso: http://locus.ufv.br/handle/123456789/5579

This work had the objective to evaluate the biodisponibility of phosphorus and levels of available phosphorus (AP) for initial pigs phase. They were realized two experiments. In the experiment 1, were utilized 140 pigs, 70 castrates males and 70 females, with initial weight of 14.92 ± 0.61 kg, distributed in a completely randomized experimental design, with seven treatments, five repetitions and four animal per experimental unit. The treatments were constituted for basal diet without phosphate supplemented and other six diets obtained for basal diet supplemented with bicalcium phosphate (BP), bicalcium phosphate with 20 % for phosphorus (BP20) and monoamonium phosphate (MAP) with two levels of phosphorus (0.221 and 0.406%) each one. On experiment 2, were used 100 commercial pigs, being 50 castrate males and 50 females, with initial weight of 15.03 ± 0.33 kg, distributed in a completely randomized experimental design, with five treatments, five repetitions and four animal per experimental unit. The treatments were constituted in a five levels for AP (0.106; 0.221; 0.310; 0406 and 0.493%), whose first levels were constituted from a basal diet, without phosphate supplementation, and others four obtained with phosphate supplementation in a diet basal with (AP). In experiment 1, it is concluded that BP20 was 13.48; 1.35 and 8.59 % more biodisponible for variable daily weight gain, phosphorus in bone and calcium in bones respectively. For MAP it was 8.65 and 728 % for variables daily weight gain and calcium in the bones respectively. The results obtained with BP were considered 100 % disponible. In the Experiment 2, the levels of AP have influenced the feed daily intake, which increased in a linear form. The daily weight gain increased and feed conversion reduced in a quadratic form due the levels of AP of the ration, until the estimated levels, respectively, of 0.450 and 0.390 % for AP. There was no effect on the AP levels of the rations over the bone resistance. The treatments also influenced in a quadratic form the contents of calcium and phosphorus in the bone, which increased, respectively, until the estimated levels of 0.388 and 0.369 % for AP. There was no effect on the AP levels of the rations aver the bone ashes content. It is concluded that the levels of AP that propitiate the better results in a swine for 15 to the 30 kg are from 0.450 for daily weight gain; 0.390 to feed conversion; 0.388 for calcium in the bone and 0,369 to phosphorus in the bone.