Pig farming has become today one of the effective activities for both small and large producers and it is important to have knowledge of the pig production cycle, management and nutritional needs according to age. The food components form the diet, they provide crude protein, energy, vitamins, minerals and fiber. A natural component of vegetables is fiber, which is part of the cell structure and is made up of cellulose and hemicellulose. For the development of the bibliographic document, an exhaustive investigation was carried out, collecting bibliographic information from books, magazines, articles from web pages, technical manuals, projects. The objective of the research was to assess the chemical and nutritional characteristics of the fiber used in the feeding of pigs. The fiber requirements in pigs, according to the National Reserch Council of the United States (NRC): percentages (%) of fiber in growth and finishing is 5 to 7%: gestation 10% and lactation 10%. the agricultural by-products most used for pig feeding are: rice powder, banana peel, cane molasses, sweet potato, passion fruit peel, as a nutritional alternative for pig feeding.Pig farming has become today one of the effective activities for both small and large producers and it is important to have knowledge of the pig production cycle, management and nutritional needs according to age. The food components form the diet, they provide crude protein, energy, vitamins, minerals and fiber. A natural component of vegetables is fiber, which is part of the cell structure and is made up of cellulose and hemicellulose. For the development of the bibliographic document, an exhaustive investigation was carried out, collecting bibliographic information from books, magazines, articles from web pages, technical manuals, projects. The objective of the research was to assess the chemical and nutritional characteristics of the fiber used in the feeding of pigs. The fiber requirements in pigs, according to the National Reserch Council of the United States (NRC): percentages (%) of fiber in growth and finishing is 5 to 7%: gestation 10% and lactation 10%. the agricultural by-products most used for pig feeding are: rice powder, banana peel, cane molasses, sweet potato, passion fruit peel, as a nutritional alternative for pig feeding.La porcicultura se ha convertido hoy en día en una de las actividades efectiva ya sea para pequeños y grandes productores y es importante tener conocimiento del ciclo de producción porcina, el manejo y las necesidades nutritivas de acuerdo a la edad. Los componentes alimenticios de forman la dieta, aportan con proteína bruta, energía, vitaminas, minerales y fibra. Un componente natural de los vegetales es la fibra, que forma parte de la estructura celular y está compuesta de celulosa y hemicelulosa. Para el desarrollo del documento bibliográfico se realizó una investigación exhaustiva recolectando información bibliografía de libros, revista, artículos de páginas web, manuales técnicos, proyectos. El objetivo de la investigación fue valorar las características químicas y nutritivas de fibra utilizada en la alimentación del ganado porcino. Los requerimientos de fibra en el cerdo, según la National Reserch Council de los estados unidos (NRC): porcentajes (%) de fibra en crecimiento y acabado es de 5 a 7 %: gestación el 10 % y lactancia el 10 %. los subproductos agrícolas más utilizados para la alimentación de porcinos son: polvillo de arroz, la cascara de plátano, la melaza de caña, camote, cascara de maracuyá, como una alternativa nutricional para la alimentación porcina.