Consumo e digestibilidade de ovinos alimentados com dietas contendo resíduos da bananicultura

• Ano de defesa: 2015
• Autor(a) principal: Tania Dayana do Carmo
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Minas Gerais; UFMG
• Palavras-chave em Português: Musa spp; Ácidos graxos voláteis; Resíduos vegetais; Co-produtos; Banana; Ovino Nutrição; Ovino Alimentação e rações; Banana na nutrição animal
• Link de acesso: http://hdl.handle.net/1843/BUBD-ABDF86

This study aimed to evaluate the effect of two levels of inclusion of banana leaf and pseudostem hays in complete diets on the intake and digestibility of nutrients in sheep. The experiment was conducted in the Institute of Agricultural Sciences of the Federal University of Minas Gerais, Montes Claros, Minas Gerais, between June and August of 2013. In the digestibility assay, 30 crossbred Santa Inês sheep, male and castrated, were used. The animals were fed in a total diet containing 60% concentrate and 20 or 40% of banana leaf or pseudostem hay. The control diet was composed of 40% Cynodon spp. hay. Experimental design was randomized blocks that were defined according to the initial body weight of the animals. Mean live weight for the first block was 42.39 ± 4.8 kg, for the second block, 37.92 ± 4.25 kg and for the third, 24.33 ± 3.4 kg. The inclusion of banana crop residues did not influence (P>0.05) dry matter (DM), organic matter (OM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), non-fibrous carbohydrate (NFC) and total carbohydrate (CHO) intake in g/day or g/UTM/day, with means of 1086.8; 1000.1; 182.7; 374.3; 194.7; 390.2; 771.6 in g/day, respectively. A reduction in NDF digestibility (45.9%) was observed in comparison to the other treatments that were not significantly different. No effect of levels or type of residues included was observed on the concentration and molar proportion of short fatty acids when compared to the treatment containing 40% Cynodon spp. hay. However, the inclusion of 40% banana leaf hay resulted in lower molar proportion of propionate (18.8%) and butyrate (8.7%) in relation to the treatment containing 40% of pseudostem hay (22.8 and 11.4% for propionate and butyrate, respectively). It can be concluded that the inclusion of 20 or 40% banana leaf or pseudostem hays do not influence the intake or digestibility of nutrients in sheep. The inclusion of 40% banana leaf hay, however, promotes a lower use of neutral detergent fiber and the addition of banana pseudostem hay at the evaluated levels enables a greater digestibility coefficient of the nutrients when compared to the leaf hay.