Orientador: Maria Cristina Thomaz / Coorientador: Caio Abércio da Silva / Banca: Pedro Henrique Watanabe / Banca: Fábio Enrique Lemos Budiño / Banca: Márcia Rita Fernandes Machado / Banca: Pamela Rodrigues Reina Moreira / Resumo: Foram conduzidos três experimentos para avaliar diferentes fontes de fibras purificadas e seus efeitos em dietas, com níveis proteicos reduzidos, sobre o desempenho e a saúde intestinal de leitões recém-desmamados. No experimento I foram caracterizadas quatro fontes de fibras purificadas, quanto à capacidade de retenção de água, volume de intumescimento, microestrutura e viscosidade. No experimento II foram avaliados o desempenho, a incidência de diarreia e o tempo de trânsito gastrointestinal de 84 leitões desmamados aos 26 dias de idade. No experimento III foram avaliados o pH, o peso relativo de órgãos do trato gastrointestinal, as concentrações de ácidos graxos de cadeia curta e ácido lático, a morfologia e a microbiologia da mucosa intestinal, os escores de lesão, as células em apoptose e mitose, e a imunidade intestinal de 42 leitões desmamados aos 26 dias de idade. Nos experimentos II e III, os animais foram distribuídos em um delineamento em blocos completos casualizados, com seis tratamentos: DC: dieta controle sem redução proteica; DR: DC com redução de quatro pontos percentuais da proteína bruta; DF1, DF2, DF3 e DF4: DR com adição de 2,0% de lignocelulose, celulose, pectina e goma guar, respectivamente. A inclusão de goma guar à dieta resultou em piores (P<0,05) ganho diário de peso e conversão alimentar, assim como no maior (P<0,05) tempo de trânsito gastrointestinal comparado à inclusão de celulose, que apresentou o menor. O peso final dos leitões f... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Three trials were conducted to evaluate different purified fibers sources and their effects in diets with reduced protein level on performance and intestinal health of weanling pigs. In trial I were characterized four purified fiber sources as to the water retention capacity, swelling volume, microstructure and viscosity. Performance, incidence of diarrhea and gastrointestinal transit of time of 84 piglets weaned at 26 days of age were evaluated in trial II. In trial III were evaluated pH, the relative organs weight of the gastrointestinal tract, concentrations of fatty acid short chain and lactic acid, the morphology and microbiology of the intestinal mucosa, the lesion scores, the apoptosis and mitotic cells and the intestinal immunity of 42 piglets weaned 26 days old. In both experiments, the animals were distributed in a randomized complete block design, with six treatments: CD: control diet without protein reduction; RD: CD with a reduction of four percent of crude protein; DF1, DF2, DF3 and DF4: RD with addition of 2.0% of lignocellulose, cellulose, pectin and guar gum, respectively. The inclusion of guar gum in the diet resulted in worse (P<0.05) daily gain and feed conversion, as well as the largest (P<0.05) gastrointestinal transit time compared to the inclusion of cellulose, which had the lowest. The final weight of the piglets was lower (P<0.05) with the addition of guar gum compared to the control diet, pectin and lignocellulose. The animals fed cellulose have the lowest (P<0.05) Lactobacillus count and the best (P<0.05) ratio of villus height and crypt depth, not differing from lignocellulose, but with the other evaluated diets. In the duodenum the number of cells in apoptosis was lower (P<0.05) in the animals fed diet with cellulose, the number of cells in mitosis was bigger (P<0.05) with control diet and pectin and the lesion scores ... (Complete abstract click electronic access below) / Doutor
| Identifer | oai:union.ndltd.org:UNESP/oai:www.athena.biblioteca.unesp.br:UEP01-000875256 |
| Date | January 2016 |
| Creators | Marujo, Manuela Vantini. |
| Contributors | Universidade Estadual Paulista "Júlio de Mesquita Filho" Faculdade de Ciências Agrárias e Veterinárias. |
| Publisher | Jaboticabal, |
| Source Sets | Universidade Estadual Paulista |
| Language | Portuguese |
| Detected Language | English |
| Type | text |
| Format | viii, 74 p. : |
| Relation | Sistema requerido: Adobe Acrobat Reader |
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