Avaliação do custo do ganho do kilo de peso vivo em protocolos de adaptação com dietas de alto teor concentrado para bovinos nelore em confinamento

• Autor(a) principal: Jesus, Thiago Luvisutto de
• Data de Publicação: 2014
• Outros Autores: Nardi Júnior, Geraldo de, Parra, Fernando Salvador [UNESP], Martins, Cyntia Ludovico [UNESP], Arrigoni, Mário de Beni [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://www.fmvz.unesp.br/rvz/index.php/rvz/article/view/674; http://hdl.handle.net/11449/141135
• topic: Adaptation; Agribusiness; Diet; Cost; La adaptación; La agroindustria; El costo dieta; Adaptação; Agronegócio; Dieta; Custo

This study aims to evaluate the cost of weight gain in the duration of high concentrate diet protocols for nelore cattle feedlot. One hundred and twenty male, non-castrated nelore cattle from grazing system were kept in 24 concrete floor pens with five animals in each one and were fed according the treatments: T1 – adaptation on stairs (Set up) for 14 days (S14); T2 – adaptation on stairs (Set up) for 21 days (S21); T3 – restriction protocol for 14 days (R14) and T4 – restriction protocol for 21 days (R21). Stair adaptation (Set up) consists of supplying diets with growing levels of concentrate according to adaptation time (days) until reaching the aimed concentration for termination diets. For restriction protocols, limited termination diet are used by quantity and daily offering is gradually increased until reaching total termination consumption. After adaptation period the animals receive only one termination diet with 85% of concentrate until slaughtering. There was no statistical difference in weight gain between adaptation protocol duration (14 and 21 days). However there was statistical difference only for adpatation protocols for (stair and restriction). Restriction protocols showed better results in relation to stair protocols as well as a much better financial viability. It is noteworthy that animal adaptation for 14 days under restriction protocol makes it the least expensive way of weight gain. It is interesting to point out that the simple adaptation procedure enables increasing to cattle feedlot and to agribusiness.