The use of corn, rice and soybean co-products is an alternative to a production with greater sustainability and better economic viability. An alternative proposes the use of isolated enzymes, or complexes of enzymes, and with the use of these enzymes in the diet that there are ingredients that are co-products, it is supposed to improve the digestibility and reduce the emission of pollutants present in the swine feces. Industrial swine farming, characterized by containment systems with large population densities, results in the production and accumulation of large amounts of residues in pig farms that, inadequately managed, have come to be considered as one of the main polluting sources. However, there are now several ways to reuse these wastes in a sustainable way. Examples are: decantation basins and the use of biodigesters, being this second option with a great cost benefit for the pig farmer. In view of the above, this review aims to address sustainable practices that are an option for pig producers to provide an economically viable and ecologically correct product

RESUMO. Avaliou-se o comportamento ingestivo de borregos e borregas da raça Santa Inês alimentados com duas diferentes cultivares de cana-de-açúcar in natura (IAC 86-2480 e SP 80-0155). Foram utilizados 28 animais, alojados em baias individuais e distribuídos em delineamento inteiramente casualizado. Utilizaram-se quatro tratamentos sendo dois lotes com sete borregos e dois lotes com sete borregas recebendo uma das cultivares de cana-de-açúcar in natura como volumoso. O experimento teve duração de 70 dias, sendo 10 dias de adaptação e 60 dias para coleta de dados. As avaliações foram realizadas a cada 5 minutos durante 24 horas, em intervalos de 15 dias, totalizando quatro avaliações ao longo do experimento. Não houve diferença estatística para ingestão, ruminação e ócio em minutos/dia. O uso das diferentes cultivares de cana-de-açúcar (IAC 86-2480 e SP 80-0155) in natura como fonte de volumoso não interferiu nas atividades diárias de ingestão, ruminação e ócio. Palavras chave: Ovis aries, eficiência de alimentação, confinamento, ovinoculturaFeeding behavior of fed lambs and ewe lambs with two cultivars of sugarcane ABSTRACT. We evaluated the feeding behavior of lambs and ewe lambs Santa Inês fed two different cultivars of sugarcane in natura (IAC 86-2480 and SP 80-0155). 28 animals were distributed in a completely randomized design, housed in individual stalls. We used four treatments and two lots with seven lambs and two lots with seven ewe lambs receiving one of the varieties of sugarcane in natura as roughage. The experiment lasted 70 days, 10 days of adaptation and 60 days for data collection. The evaluations were performed every 5 minutes for 24 hours at intervals of 15 days, a total of four evaluations during the experiment. No significant difference to eating, ruminating and idle in minutes/day. The use of different cultivars of sugarcane (IAC 86-2480 and SP 80-0155) in natura as roughage source did not interfere in the daily intake activities, rumination and idleness.