Efeito da cobertura do galpão e da torta de babaçu nas rações sobre as características produtivas de codornas de corte

• Autor(a) principal: BORGES, Jordane de Oliveira
• Data de Publicação: 2016
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFMA
• Texto Completo: http://tedebc.ufma.br:8080/jspui/handle/tede/569
• topic: Coturnicultura; Instalações; Ingrediente alternativo; Telhado; Quail farming; Facilities; Alternative ingredient; Roof; CIENCIAS AGRARIAS; AGRONOMIA

This study aimed to evaluate the effects of shed roofing (SR) and inclusion of babassu cake in the diets (BC) on the productive traits of meat quail from 14 to 28 and 14 to 40 days of age. A total of 896 meat-type quail (Coturnix coturnix coturnix) were housed at their 14th day of life in four masonry sheds. A completely randomized experimental design with a 4 × 4 factorial arrangement was adopted, consisting of four shed roofing types (asbestos cement, ceramic, straw, and painted asbestos cement) and four diets (0, 5, 10, and 15% inclusion of babassu cake), with 16 treatments and four replications of 14 quail, totaling 64 experimental units. The performance variables evaluated from 14 to 28 and 14 to 40 days were: feed intake (FI, g/quail), average weight gain (WG, g/quail), feed conversion (FC, g/g), average live weight at 28 days (AW28, g/quail), average live weight at 40 days (AW40, g/quail), and energy efficiency (EE, g/Mcal). After the slaughter on the 40th day, we also measured the carcass weight (CW) and the yields (%) of carcass (CY), breast (BY), legs (LY), and wings (WY), as well as the relative weights of the heart (RWH), liver (RWL), gizzard (RWG), and intestine (RWI). Additionally, on the 40th day, we evaluated the surface temperatures (head, HT; back, BT; leg, LT; and wings, WT) and the cloaca temperature (CLT), and later we determined the average surface temperature (AST) and the average body temperature (ABT). To compare the economic efficiency between experimental diets, the feed cost per kg of carcass and the gross margin were calculated. In the period from 14 to 28 days, SR influenced (P<0.05) FI28, WG28, and AW28 of the quail, and the ceramic roofing favored these variables compared with the other roofing types. Babassu cake did not affect (P>0.05) FI28, but improved WG28, FC28, AW28, and EE28 linearly, with its inclusion recommended at up to 15%. In the period from 14 to 40 days, SR influenced (P<0.05) WG40, FC40, AW40, and FE40 of the quail, but there was no effect (P>0.05) on FI40, and responses were similar with the use of ceramic and asbestos roofing. Inclusion of BC provided a quadratic increase in FI40, WG40, and AW40. There was no effect of SR or BC on CW, BY, WY, LY, RWH, RWL, and RWI; however, BC influenced RWG, which increased linearly with the inclusion of the ingredient. Head temperature, WT, LT, and AST were lower in quail kept under ceramic roofing, but no effects were detected (P>0.05) on CLT or ABT. The babassu cake, however, did not influence (P>0.05) any of the evaluated temperatures. In conclusion, ceramic roofing provides better environmental conditions in relation to the other roofing types. Babassu cake improved the performance characteristics, and inclusion of up to 15% of this ingredient in diets for meat quail is technically feasible. Based on the current cost analysis, inclusion of BC is economically unfeasible.