Composição bromatológica da silagem de capim-elefante com diferentes proporções de casca desidratada de maracujá (Passiflora edulis Sims f. flavicarpa) RESUMOAvaliou-se a composição bromatológica das silagens de capim-elefante contendo diferentes níveis de inclusão (0; 10; 20 e 30%) de casca de maracujá desidratada (CMD) na matéria natural do capim-elefante, em um delineamento inteiramente casualizado, com 8 repetições. A gramínea foi cortada aos 60 dias de idade, triturada e ensilada juntamente com as proporções de CMD de cada tratamento. Após 30 dias, os silos foram abertos. Observou-se que a inclusão da CMD aumentou linearmente os teores de matéria seca (23,2 e 41,8 para os tratamentos 0 e 30%, respectivamente), favorecendo melhor fermentação da silagem, assim como os teores de proteína bruta (5,4; 8,5; 10,2 e 11,9) e carboidratos não-fibrosos (P<0,005). Os teores de fibra em detergente neutro, fibra em detergente ácido, hemicelulose e celulose foram reduzidos, indicando que a casca de maracujá desidratada pode ser utilizada em até 30% de inclusão na silagem de capim-elefante. Palavras-chave: Composição química, ensilagem, subprodutosChemical composition of elephant grass silage with different proportions of dried passion fruit peel (Passiflora edulis Sims f. flavicarpa) ABSTRACTThe chemical composition of elephant grass silages containing different inclusion levels (0, 10, 20 and 30%) of dried passion fruit peel -CMD -in elephant grass natural material, was evaluated in a completely randomized design with eight replications. The grass was cut at 60 days old, crushed and ensiled together with CMD proportions of each treatment. Silos were opened 30 days after. It was observed that CMD inclusion linearly increased dry matter levels (23.2 and 41.8 for treatments 0 and 30% respectively), improving silage fermentation, as well as crude protein levels (5.4, 8.5, 10.2 and 11.9) and nonfiber carbohydrates (P<0.005). Neutral detergent fiber, acid detergent fiber, hemicellulose and cellulose levels deceased, indicating that dried passion fruit peel can be used in up to 30% of inclusion in elephant grass silage.
The consumption, digestibility, and performance was evaluated of lambs fed silage elephant grass containing different inclusion levels of passion fruit peel dried (0, 10, 20 and 30%) in natural matter of elephant grass, in a randomized completely randomized design with four replications. The elephant grass was cut at 60 days of age, chopped and ensiled in barrels along with the proportions of dried passion fruit peel, according to each treatment. After 30 days, the silos were opened for evaluation. It was observed that the inclusion of the residual affected the intake and digestibility of certain nutrients (P<0.05). Effect was observed for average daily weight gain and total gain of the lambs, and for every 1% of dried passion fruit peel added the ADG increased 2.42%. The feed conversion showed decreasing linear effect (8.9, 9.2, 8.6 and 7.2), respectively, among treatments. It is concluded that the dried passion fruit peel can be added up to 30% of the elephant grass. Key words: Consumption, ensilage, Passiflora edulins Abstract Avaliou-se o consumo, a digestibilidade, e o desempenho de silagens de capim-elefante, contendo diferentes níveis de inclusão (0; 10; 20 e 30%) de casca de maracujá desidratada na matéria natural do capim-elefante, em um delineamento inteiramente casualizado, com 4 repetições. O capim elefante foi cortado com 60 dias de idade, picado e ensilado em tonéis juntamente com as proporções de casca de maracujá desidratada conforme cada tratamento. Após 30 dias de armazenagem os silos foram abertos para avaliações. Observou-se que a inclusão do resíduo influenciou o consumo e a digestibilidade de alguns nutrientes (P<0,05). Houve efeito para o ganho de peso médio diário e ganho total dos cordeiros, sendo que para cada 1% de casca de maracujá desidratada adicionada elevou-se 2,42% o GMD. A conversão alimentar apresentou efeito linear decrescente (8,9; 9,2; 8,6 e 7,2), respectivamente, entre os tratamentos, permitindo concluir que, a casca de maracujá desidratada pode ser utilizada em até 30% de inclusão ao capim-elefante.
-The experiment was conducted to assess the effect of substituting corn for soybean hulls on the apparent digestibility of nutrients, carcass performance and characteristics, and yield of cuts of 25 non-castrated male Santa Ines lambs with an initial body weight of 20±2 kg, at approximately 6 months of age, sheltered individually in stalls (1.10 × 1.0 m), considering a totally randomized design, fed 600 g/kg of forage and 400 g/kg of concentrate. Soybean hulls replaced corn at 0, 250, 500, 750, and 1,000 g/kg of dry matter. The intake of dry matter (DM), organic matter (OM), neutral detergent fiber (NDF), acid detergent fiber (ADF), NDF corrected for ash and protein (NDFap), total carbohydrates (TC), non-fibrous carbohydrates (NFC) and total digestible nutrients (TDN) in g/day, and the digestibility of NFC increased linearly with the soybean hull replacement. Crude protein intake displayed a quadratic response, whereas the intake of EE in g/day, the apparent digestibility coefficients of DM, OM, CP, EE, NDF, ADF, NDFap and TC, TDN, average daily gain, carcass characteristics, and yield of cuts were not affected by the soybean hull levels. Soybean hull substitution increased the intake of DM and nutrients, making it possible to replace up to 1,000 g/kg of dry matter in the diets for confined sheep, as it does not compromise performance, digestibility, carcass characteristics, or yield of cuts when used in sheep nutrition.
This work was carried out in collaboration between all authors. Author LSCL designed and wrote the study. Authors RRS, GGPC and FFS supervised the experiment and performed statistics analyses.Author JIS supervised the analysis of the study. Author APGS held technical corrections and references. Authors MPVB, MML and GAF performed practical work and the author RMP performed the corrections of English and technical corrections. All authors read and approved the final manuscript.
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