The aim of this study was to evaluate the productive performance and benefit-cost ratio (B:C) of fattening lambs in confinement with diets that included Canavalia ensiformis beans in meal (CH) or pelleted (CP). Twelve Pelibuey lambs with an initial live weight of 15.0 ± 0.64 kg were used, randomly assigned to treatments that included CH or CP at levels of 25% (25CH and 25CP) and 50% (50CH and 50CP) as a protein source. Final live weight (FW), daily weight gain (DWG), daily feed intake (DFI), feed conversion ratio (FCR), usable feed efficiency (UFE), and benefit : cost ratio (BCR) were evaluated during the initiation and development stages. In the first period, the variables FW, DFI, FCR, and UFE were similar (p>0.05) between treatments. Control lambs had the highest DWG (270.6 g/d). In the development period, lambs in the Control and 50CH groups had the best FCR and lowest UFE (p<...

The aim of this study was to compare the productive performance and profitability of the fattening of Kathadin male and female lambs (n=97) in confinement treated with Zeranol (ZNL), androgens (AND) and ZNL+AND under a 2x4 factorial design. The lambs treated with ZNL received 0.2 mg/kg of body weight (BW) every 28 d, those treated with AND received Nandrolone Decanoate + Trenbolone + Boldenone Undecinelate, via IM in doses of 0.3 mg/kg + 0.4 mg/kg + 0.3 mg/kg of BW, respectively, every 28 d, those treated with ZL+AND received the same doses of the mentioned drugs, while those in the control group received 0.5 mL of saline solution. Final body weight (FBW), daily weight gain (DWG), feed conversion (FC) on dry basis (DM) and wet basis (WM), and voluntary intake (VC) in DM and WM were evaluated. The FBW was different (p<0.05) between treatments in males and females. The DWG was higher (p...