Criação de frangos de corte e de duplo propósito efectuado na granja da Faculdade de Veterinária: caso de estudo; desempenho produtivo de frangos Sasso alimentados com ração comercial contendo farinha de folhas de mandioca (Manihot esculenta)

Abstract

This paper describes the internship activities and a case study carried out as part of the final project. The internship was carried out at the Faculty of Veterinary Medicine (FAVET) with the aim of consolidating theoretical and practical knowledge acquired during the Animal Science and Technology course on poultry production. During the internship, it was possible to monitor and participate in several activities related to the production process, including housing, water and feed supply, and vaccination. The case study developed aimed to evaluate the productive performance of Sasso chickens fed commercial feed containing different levels of cassava leaf flour. For the trial, 329 one-day-old chicks were purchased and fed commercial feed during the first 4 weeks of life. After this period, the birds were divided into three treatment groups (T0, T1, and T3), with 108 birds in each group. These groups received diets containing different levels of cassava leaf flour inclusion, from the fifth to the ninth week of age. Birds in treatment 0 (T0) were fed exclusively with commercial diet, while birds in treatments 1 (T1) and 2 (T2) received commercial diets containing 20% ​​and 40% cassava leaf flour, respectively. Bird performance was evaluated based on feed intake (CR), weight gain (GP), feed conversion (CA) and viability (V). In the period from 0 to 4 weeks, the birds presented an average GP of 375.28 g, CR of 754.19 g, CA of 2.01 and V of 98.78%. During the period from 5 to 9 weeks, treatment T0 presented the best performance, with GP of 1483.83 g, surpassing T1 (1100.39 g) and T2 (836.89 g). The CR was also higher in T0 (2335.80g) compared to T1 (2277.44g) and T2 (2064.07g), as well as the CA, which was more efficient in T0 (1.57) compared to T1 (2.07) and T2 (2.47). The viability in T0 was 99.07%, higher than T1 (97.22%) and T2 (96.3%). The stage contributed significantly to the improvement of broiler practices. The trial demonstrated that, as the inclusion of cassava leaf flour in the diet increases, the zootechnical performance of the birds decreases(TRADUÇÃO NOSSA)