Utilização de coprodutos da indústria de massas e biscoitos no desempenho e características de carcaça de codornas de corte

Abstract

Two experiments were carried out at the Poultry Laboratory of the Department of Animal Science at the Federal Rural University of Pernambuco (UFRPE) to examine the performance (feed intake - FI; weight gain - WG; and feed conversion - FC), weight and yield of carcass and cuts, and economic viability of meat quail (Coturnix coturnix coturnix) fed a control diet (corn- and soybean meal-based) or control diet with 10, 20, 30, or 40% inclusion of pasta (Chapter 2) or cookie (Chapter 3) waste in meal form. A total of 450 quail (males and females) were used in each experiment, where they were assigned to five treatments in a completely randomized design with six replicates with 15 birds each. The performance variables were studied in Phase I (1-21 days) and in the accumulated period (1-42) days. For the analysis of carcass variables, two males and two females were slaughtered at 42 days of age. In the experiment with pasta waste, in the phase of 1 to 21 days, the inclusion levels did not influence FI, and the PWM intake levels for optimal WG and FC were estimated at 20.70% and 22.8%, respectively. In the accumulated period of 1 to 42 days, the PWM levels did not cause differences in the performance variables. The yields of carcass and cuts were not influenced by the treatments; however, abdominal fat yield declined as the dietary levels of PWM were elevated. The feeding cost decreased with the inclusion of the by-product. In the trial with cookie waste, for Phase I, from 1 to 21 days, the inclusion levels did not influence FI, WG, or FC. In the accumulated period of 1 to 42 days, the treatments did not affect FI or FC, whereas the best WG was estimated at the inclusion level of 15.02%. No significant effect of the treatments was observed on the yields of carcass and cuts. Economic analysis revealed lower feeding costs in the phase of 1 to 21 days and in the total period of 1 to 42 days. Better average gross margin and average gross rate of return were obtained with the treatments including cookie meal. In conclusion, the pasta and cookie meals can be used at up to 40% in the diet of meat quail without compromising their performance or carcass yield. Feeding costs decrease as the pasta and cookie meals are included. The use of cookie meal provided higher average gross margin and average gross rate of return.