Parámetros productivos en cerdos de engorde de la línea genética TOPPIG, suplementados con Ractopaminas en la provincia de Santo Domingo de los Tsáchilas.

Abstract

In a swine system production of fattening pigs located in the province of Santo Domingo de los Tsáchilas, the investigation was made about the ractopamine efficiency in production parameters in pigs in finishing stage of TOPPIG genetic line to evaluate de different levels of ractopamine, for which used a completely random design, for 28 days each treatment. At the end of the fattening stage, determinate that the pigs were treated with 250 grams of ractopamine obtain better results at the level of dorsal fat, weight gain, daily feed intake, feed conversion and price of food with ractopamina. As far as the measure of back fat in male in this treatment was 10.05 mm (P<0.05) and in female result 9.62 mm (P<0.05), daily food intake of 2.63 kg and feed conversion of 2.19 kg. This treatment USD $ 401.85 is cheaper in comparison than the treatment of 500 gr. It is recommended to evaluate males and females in separate groups, to obtain better performance and improvement in feed conversion.