" Utilizaciòn de harina de yuca integral (Manihot esculenta crantz ) y follaje en reemplazo parcial del maiz en alimentos de pollos de engorde".

Abstract

This work was carried out at the El Robusto Farm, located in the Calderón parish of the Portoviejo canton, Manabí province, with a duration of 6 weeks, the objective was to evaluate the effects of the use of integral cassava flour and foliage (Manihot esculenta crantz) in partial replacement of corn and its effect on productive performance and cost benefit, in broilers of the Cobb 500 line. Different levels of whole cassava flour (HYI) were used; Initial Stage T0 (0%), T1 (10%), T2 (20%), T3 (30%); Growth Stage T0 (0%), T1 (10%), T2 (20%), T3 (30%); Fattening Stage T0 (0%), T1 (10%), T2 (20%), T3 (30%), from 200 unsexed birds from 1 day of birth to 42 days were used, a completely random design was used (DCA), with 3 treatments plus 1 control group, 5 repetitions with 10 chicks, a 3-stage feeding system was used (initial 1-21, growth 22-35 and fattening 36-42 days). Productive parameters were calculated such as: final weight (PCF), feed conversion (CA), mortality percentage, carcass yield (CR), abdominal fat (GA), breast, thigh and wing yield, cost-benefit ratio (CB) and European efficiency factor (FEE). The results at the final weight indicate that in the treatments there is no statistically difference (P> 0.05) between them when compared, in the feed conversion it was determined that there is a statistical difference (P <0.05) with the T1 group at the obtain the highest conversion (1.99); There was a statistical difference in carcass weight, with T3 achieving the best carcass weight of 1,610 kg; the highest carcass yield corresponds to the T1 group with (73.59%); the best weight and performance of the breast correspond to the T3, the weight and performance of the thigh, wing was obtained by the T1. The best profitability that was obtained was with the T3 group, treated with 30% of HYI used in its three stages: initial, growth and fattening, with a benefit / cost ratio of (1/29), as well as the best index European efficiency with (322.05). With this, it was possible to determine that T1 and T3 achieved an optimal productive response of the chickens, in relation to the productive parameters evaluated in the present research work.