http://repositorio.ufc.br/handle/riufc/92 Mon, 06 Apr 2026 12:19:25 GMT 2026-04-06T12:19:25Z http://repositorio.ufc.br/handle/riufc/85050 Título: Blend enzimático em dietas para leitões na fase de creche Autor(es): Patrício, Ivyna Dryelle Fernandes Abstract: With the aim of improving nutrient digestibility, the use of exogenous enzymes can also provide nutritional and/or energy increase in diets for piglets. The objective was to evaluate the addition of an enzyme blend to diets for piglets in two trials regarding the digestibility of feed nutrients, performance, occurrence of diarrhea and intestinal morphometry. In both trials, 4 treatments were used: CON- control feed; RED5- feed with a 5% reduction in energy level, RED2.5%+blend- ration with a 2.5% reduction in energy level and addition of an enzymatic blend; RED5+blend- ration with 5% reduction in energy level and addition of enzyme blend. For the digestibility test, 16 castrated male pigs aged 50 days were housed in metabolic study cages, using the total feces and urine collection method. The addition of an enzymatic blend with a 2.5% energy reduction results in higher digestibility coefficients for dry matter, ether extract, mineral matter, neutral detergent fiber and acid detergent fiber. For the performance test, 64 castrated male piglets aged 21 days were used, distributed among 4 treatments with 8 replications each. From 33 to 42 days of age, it was observed that piglets fed diets with the addition of an enzyme blend showed similar feed conversion compared to those fed the control. Between 43 and 70 days of age, piglets that received diets with the addition of an enzyme blend and reductions of 2.5% in the energy level of the diet showed similar feed conversion to animals that received the control diet. Animals that received food with an enzyme blend showed greater villus height in the duodenum compared to animals fed control food and with a 5% reduction without enzyme supplementation. Animals that received feed containing an enzyme blend showed higher villus height, lower crypt depth and a better villus/crypt ratio compared to those fed with feed with a 5% reduction in energy level without the addition of enzyme blend. The inclusion of an enzymatic blend allows a reduction of up to 2.5% in the energy level of diets without compromising the performance of piglets in the nursery phase and results in better parameters of intestinal morphometry of the duodenum and jejunum of piglets. Tipo: Dissertação Mon, 01 Jan 2024 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/85050 2024-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/84133 Título: Efeito do pastejo por ovinos sobre a composição florística da vegetação herbácea de uma caatinga raleada Autor(es): Araújo Neto, Raimundo Bezerra de Tipo: Dissertação Mon, 01 Jan 1990 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/84133 1990-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/83844 Título: Valor nutritivo e efeito de diferentes níveis de feno de Leucena (Leucaena leuco cephala (LAM.) de Wit) sobre o consumo e digestibilidade das rações Autor(es): Costa, Emanuel Sousa Abstract: This research was conducted in the Departamento de Zootecnia do Centro de Ciências Agrarias da Universidade Federal do Ceara in order to determine the nutritive value of Leucaena leucocephala (LAM.) de WIT, hay, the effect of different levels of that hay on both apparent digestibility and intake and to test different methods of apparent digestibility determination. [...] Tipo: Dissertação Sun, 01 Jan 1989 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/83844 1989-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/83692 Título: Efeitos da manipulação do estrato lenhoso sobre as características fitossociológicas do estrato herbáceo em um sitio ecológico do sertão cearense Autor(es): Saraiva, Elzira Maria Rodrigues Abstract: The experiment was carried out at Fazenda Bom Lugar, Tauá-CE, Brazil, on a poorly developed rea-yellow podzolie range site, with secundary succession vegetation presenting the herbaceous, brash and trees layers. [...] Tipo: Dissertação Fri, 01 Jan 1988 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/83692 1988-01-01T00:00:00Z