Desempenho e perfil metabólico de ovinos Santa Inês submetidos ao regime alimentar para crescimento compensatório em confinamento.

Abstract

The objective of this study was to evaluate the performance of lamb subjected to food restriction followed by refeeding. A total of 40 Santa Ines sheep whole business, averaging 17 ± 1.7 kg body weight (BW) and 100 days old. The study was conducted in two experimental tests: a period of food restriction and refeeding period. The experimental design was completely randomized design with four treatments and ten repetitions. The dry matter intake (DMI) in kg / day, expressed in gMS/kgO, and 75% in PV, as well as consumption of organic matter (IOM), consumption of mineral material (CMM), crude protein (CP) , gross consumption of energy (CEB), ether extract consumption (EEC), acid detergent fiber intake (CFDA), intake of neutral detergent fiber (NDF) decreased linearly and quadratic effect for the variables: feed conversion (FC) feed efficiency (AE), dry matter digestibility (DMD) and digestibility of ash (MMD) and average daily weight gain (DWG) in relation to food restriction. In the second trial, CMS, CMO, CEB, EEC, CFDA, INDF and CA showed a linearly decreasing according to prior restraint and did not affect the following variables: CMS gMS/PVO, 75, DMI% LW CMM, CPB, DMS, organic matter digestibility (OMD), DMM, digestibility of crude protein (CPD), digestibility of gross energy (GED). A quadratic effect according to the previous restriction to water consumption (GAC) and EA, noting a decline to the point of inflection 31 and 13% respectively. Food restriction caused a negative effect on ADG However, during the refeeding these animals recovered and showed gains similar to those fed ad libitum.