"Efectos de la Castración en Toretes Brahaman Mestizos Cebados en Pastoreos más Suplementación con Subproductos de la Zona (Palmiste, Soya, Algodón)"

Abstract

In the farm "Rancho el Codorniz", located, in Santo Domingo de los Tsachilas, Province, three food supplements were evaluated (soya, cotton and kernel cakes), provided to 36 Brahman crossbred young bulls of 18 months old and 363.67 kg of initial weight in average, from them 50% were castrated. The experimental units were distributed under a design completely at random in a combinatory adjustment, being the factor A the supplement type and factor B the condition of the animal (castrated and not castrated); the experimental results were put under variance analysis and average separation through the Waller-Duncan test. Determining that the young Bulls that consumed soy cake, presented better answers, with final weights of 453.14 kg, weight gains of 0.75 kg / day ,. food conversion of 22.97 and the highest corporal condition (3.26 points). Whole Young bulls presented a slight superiority in 4.68 kg in the final weight, 3.40 kg in the weight gain and a better conversion with respect to castrated young bulls. The greatest economic yield (66%), was reached with the soy cake, while with kemel and cotton cakes 63% and 61% respectively; in the whole animal the yield was 67% and in the castrated ones 58% ,. It is recommended to use the soy cake as food supplements in the fattening of Brahman crossbred young Bulls.