Estratégias alimentares para a recria e terminação de tourinhos Nelore

• Autor(a) principal: Moretti, Matheus Henrique [UNESP]
• Data de Publicação: 2015
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/124016; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/09-06-2015/000833017.pdf
• topic: Bovino; Nelore (Zebu); Suplementos dieteticos; Pastagens; Confinamento (Animais); Corpo - Composição; Feedlots

Two trials were made aiming to evaluate the effect of different nutritional plans on body and carcass gain, as well as changes in body composition of Nelore cattle. The trial 1 started in July, 2009 and finished in September, 2010, and was divided in three phases. The phases I and II corresponded to the growing phase, and the phase III corresponded to the finishing phase. In phase I the animals were randomly assigned to 1 of 2 treatments consisting of: a) protein (PRI) or, b) protein and energy (PEI) supplement. The phase II for each of the phase I treatments, the animals were randomly assigned in factorial (2 x 4) to 1 of 4 treatments including: a) mineral salt (MN), b) protein (PRII), c) protein and energy (PEII) and d) energy (EN) supplement. The phase III for each of the phase I and II treatments, the animals were randomly assigned in factorial (2 x 4 x 2) to 1 of 2 treatments: finishing in 1) pasture (PA) or 2) feedlot (FE), in both treatments the animals were fed high concentrate. 129 young Nelore bulls, were 8 ± 2 months of age and BW of 204.6 ± 5.2 kg were utilized. The trial 2 started in July, 2011 and finished in September, 2012, and was divided in three phases as the trial 1. In phase I the animals were randomly assigned to 1 of 2 treatments consisting of: a) protein (PRI) or, b) protein and energy (PEI) supplement. The phase II for each of the phase I treatments, the animals were randomly assigned in factorial (2 x 2) to 1 of 2 treatments including: a) mineral salt (MN), b) protein and energy supplement (PEII). The phase III for each of the phase I and II treatments, the animals were randomly assigned in factorial (2 x 2 x 2) to 1 of 2 treatments: 1) medium or 2) high feed. 78 young Nelore bulls, were 8 ± 2 months of age and BW of 171.7 ± 6.4 kg were utilized. Measurements of ADG, gain and composition of carcass were made. All the data were analysed as a randomized factorial design using the PROC MIXED of the SAS ...