Assessment of the agronomic potential of two types of deep-bedding swine

The aim of this study was to assess two deep-bedding swine with different substrates, shavings woods and sugarcane bagasse through analyses of 6 lots with 40 animals to determine their agronomic potential as a fertilizer. Each pen housed the animals in the finishing phase for 90 days. Samples were collected at the time of removal of both beds, after 1 year of use. The results showed that the bed sugarcane bagasse presented a higher concentration of minerals due to their higher decomposition, while the bed with shaving woods had a higher concentration of carbon, causing an increase in the ratio of carbon/nitrogen, promoted by a lower mineralization of the organic matter due to the presence of large-scale lignificant material in the timber. The average concentration of nutrients found in the beds, makes it as a possible source of organic fertilizer for use on crops

Crude protein of pastures of grass napier submitted organic fertilization and mineral

Todos os textos, informa??es e resultados apresentados s?o de inteira responsabilidade dos autores.Parte da inicia??o cient?fica do primeiro autor, financiada pelo Programa Institucional de Bolsas de Inicia??o Cient?fica, em Desenvolvimento Tecnol?gico e Inova??o - PIBICTI/IF Sudeste MG.Bruno Grossi Costa Homem, publicado no artigo como segundo autor: Bruno Gossi Costa Homem.Objetivou-se com este trabalho avaliar os teores de prote?na bruta (PB) do capim-Napier, manejado como pastejo, sob dois n?veis de aduba??o mineral e dois n?veis de aduba??o org?nica. O delineamento experimental adotado foi em blocos, com quatro repeti??es. Os tratamentos foram compostos por duas doses de aduba??o mineral (133 e 200 Kg de N ha-1), duas de aduba??o org?nica (133 e 200 Kg de N ha-1) e mais uma testemunha. As aduba??es foram parceladas em quatro aplica??es posteriormente ao corte de desbastamento e ao corte realizado de acordo com altura de manejo de pastejo da cultivar Napier (1 m de entrada e 0,5 m de sa?da). A aduba??o org?nica foi realizada com cama sobreposta de su?no e para a aduba??o qu?mica foi usada ureia. As quantidades de cloreto de pot?ssio e superfosfato triplo nas aduba??es minerais foram determinadas de acordo com o n?vel de pot?ssio e f?sforo na cama sobreposta de su?no. As amostras foram secadas em estufa de ventila??o for?ada a 65 ?C, mo?das em moinho tipo Willey com peneira de 1 mm e, posteriormente, as amostras foram submetidas an?lises de PB pelo m?todo Kjeldahl. Foi observado que os dois n?veis de aduba??o mineral apresentaram maior valor de PB (P>0,05), entretanto os dois n?veis de aduba??o org?nica na forma de cama sobreposta de su?no apresentaram maior teor de PB que a testemunha, mostrando que a cama sobreposta tem potencial para ser utilizada na aduba??o de pastagens de capim-Napier. Os dois n?veis de aduba??o mineral promoveram maiores teores de PB em rela??o ?s aduba??es org?nica com cama sobreposta de suinocultura.The objective of this study was to evaluate the crude protein (CP) of Napier grass, as managed grazing under two levels of mineral fertilizer and two levels of organic fertilization. The experimental design was in blocks with four replications. The treatments consisted of two doses of mineral fertilizer (133 and 200 kg N ha-1), two organic fertilization (133 and 200 kg N ha-1) and another witness. Fertilization was divided in four applications later cutting chopping and cutting carried out according to height and grazing management cultivar Napier (1 m and 0.5 m input output). The organic fertilization was performed with superimposed pig bed and the chemical fertilizer was used urea. The quantities of potassium chloride and triple super phosphate in the mineral fertilizers have been determined according to the level of potassium and phosphorus in the overlapping porcine bed. The samples were dried in a forced ventilation oven at 65 ? C, ground in a Wiley mill with a 1 mm sieve and subsequently the samples were subjected to analysis by the Kjeldahl method PB. It was observed that the two levels of mineral fertilizer showed higher value of CP (P> 0.05), however the two levels of organic fertilizer in the form of superimposed pig bed had higher content of CP that the witness, showing that the bunk bed It has the potential to be used in the fertilization of Napier grass pastures. The two levels of mineral fertilization promoted higher crude protein content in relation to organic fertilization with superimposed swine bed

Uso da água residuária da suinocultura como promotora da produtividade do capim-Braquiária

The objective of this study was to evaluate forage production and root accumulation in Brachiaria decumbens cv. Basilisk with swine wastewater as a fertilizer. The experiment was conducted into a greenhouse in Federal Institute of Education, Science and Technology of Southeast of Minas Gerais, Rio Pomba Campus. Pots with 6 dm-3 volumes were used as experimental units. Were used a randomized block design with four replications. Were studied four swine waste doses (0, 225, 450 and 675mL pot-1) over four regrowth cycles. The dry matter production of the aerial part, forage accumulation rate, crude protein and dry matter production of roots increased with the highest swine waste doses being around 670, 742, 160 and 465% respectively from lower to higher dose. There was interaction between swine waste and regrowth cycles for plant height and tillering, and in all regrowth cycles responded positively with increasing swine waste doses. Applying swine waste on pastures is therefore a viable alternative to increase productivity of B. decumbens cv. Basilisk, it recommends the use of swine waste corresponding to the dose of 675mL pot-1 to maintenance pasturesObjetivou-se com este trabalho avaliar as respostas agronômicas da Brachiaria decumbens cv. Basilisk em função da aplicação de doses de água residuária da suinocultura (ARS). O experimento foi conduzido em casa de vegetação no Instituto Federal de Educação, Ciência e Tecnologia do Sudeste de Minas Gerais, Câmpus Rio Pomba. Vasos com volume de 6dm3 foram utilizados como unidades experimentais, utilizou-se o delineamento em blocos completos casualizados num esquema de parcela subdividida, com quatro repetições. Foram estudadas quatro doses de ARS (0, 225, 450 e 675mL vaso-1) parceladas durante quatro ciclos de rebrotação. A produção de matéria seca da parte aérea, a taxa de acúmulo de forragem, a proteína bruta e a produção de matéria seca de raízes aumentaram com as doses de ARS, com aumentos de cerca de 670, 742, 160 e 465% respectivamente da menor para a maior dose. Houve interação entre doses de ARS e ciclos de rebrotação para as variáveis, altura e densidade populacional de perfilhos, sendo que em todos os ciclos de rebrotação, responderam positivamente com o aumento das doses de ARS. A aplicação de ARS, portanto, é uma alternativa viável para aumento da produtividade da B. decumbens cv. Basilisk, recomenda-se o uso de ARS correspondente à dose de 675mL vaso-1 na manutenção das pastagens