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Rio Verde, Brazil

Correa P.C.,Federal University of Vicosa | Resende O.,IF Goiano | Garin S.A.,Public University of Navarra | Jaren C.,Public University of Navarra | De Oliveira G.H.H.,Instituto Federal Of Brasilia
Engenharia Agricola | Year: 2011

The present study aimed to determine the volumetric shrinkage rate of bean (Phaseolus vulgaris L.) seeds during air-drying under different conditions of air, temperature and relative humidity, and to adjust several mathematical models to the empiric values observed, and select the one that best represents the phenomenon. Six mathematical models were adjusted to the experimental values to represent the phenomenon. It was determined the degree of adjustment of each model from the value of the coefficient of determination, the behavior of the distribution of the residuals, and the magnitude of the average relative and estimated errors. The rate of volumetric shrinkage that occurred in bean seeds during drying is between 25 and 37%. It basically depends on the final moisture content, regardless of the air conditions during drying. The Modified Bala & Woods' model best represented the process.

de Oliveira M.C.,University of Rio Verde | da Silva D.M.,University of Rio Verde | Loch F.C.,University of Rio Verde | Martins P.C.,IF Goiano | And 2 more authors.
Revista Brasileira de Ciencia Avicola | Year: 2013

This study was carried out to evaluate the effect of bee pollen (BP) levels on the IgG and IgM titers, weight of lymphoid organs, and on the tibia morphometric measures and mineralization in broilers at 21 and 42 days of age. Four hundred birds were used in an entirely randomized design with four treatments (0, 0.5, 1 and 1.5% of BP feed inclusion) and five replicates. At 21 and 42 days of rearing, blood samples were collected for IgG and IgM analysis, as well as lymphoid organs (bursa, thymus and spleen) and the tibiae. There was no effect (p>0.05) of the BP inclusion on IgG titers, bursa and spleen weights, tibia morphometric measures and mineralization at 21 and 42 days, IgM titer at 42 days or thymus weight at 21 days. However, IgM titers at 21 days and the thymus weight at 42 days linearly increased with BP dietary inclusion. It was concluded that up to 1.5% BP can be included in broiler feeds until 21 days of age to enhance bird immunity.

The population growth not only demands further exploration and use of water, but generates different types of wastewater, such as sewage which is dumped directly into watercourses. In this context, the aim of this study was to evaluate the influence of the use of wastewater from domestic sources on the growth of plants of physic nut during the third year of production under protected ambient. A randomized block design in a 5 × 2 factorial scheme was used, the factors being five levels of water replacement - WR (0.25, 0.50, 0.75, 1.00 and 1.25 times water consumed by the plant) and two levels of phosphorus (135 and 200 g plant-1 year-1) with four replications. Plants were grown in recipients with a capacity of 200 L and in the beginning of the 3rd year of production (present study) a drastic pruning was performed. The variables plant height, stem diameter; leaf number and leaf area of the physic nut were influenced by the depth of water replacement from 30 days after pruning (DAP). The leaf number and stem diameter were affected by phosphorus dose at 30 and 90 DAP, respectively. The plant height and leaf area were influenced by the interaction (WR × phosphorus dose) at 30, 60 and 90 DAP. The weight of the fruit and water use efficiency of physic nut were affected by the depth of water applied but were not influenced by phosphorus dose.

Epifanio P.S.,Ciencias Agrarias Do Instituto Federal Goiano | De Pinho Costa K.A.,IF Goiano | Da Costa Severiano E.,IF Goiano | Cruvinel W.S.,Ciencias Agrarias Do Instituto Federal Goiano | And 2 more authors.
Semina:Ciencias Agrarias | Year: 2014

The goal of this study was to evaluate the fermentative and bromatological characteristics of Piata palisadegrass (Brachiaria brizantha cv. Piata) ensiled with levels of meals from biodiesel industry. The experiment was performed at the Federal Institute of Goias State, Campus Rio Verde. The experiment was a completely randomized design with four replications, in 4 × 4 factorial arrangement, being four meals (cotton, sunflower, soybean, and canola) and four levels of inclusion (0, 5, 10 and 15%). The results showed the oleaginous meals from biodiesel industry are indicated as additives for ensiling Piata palisadegrass, by improving the qualitative, nutritional and fermentative characteristics of the Piata palisadegrass silage. It is recommended the addition of 15% of the meals, since this level provides the best quality of silage. The soybean meal is the most effective to improve the silage quality, in comparison with the other additives.

Cabral J.S.R.,Soil and Agricultural Engineering | Alberto P.S.,IF Goiano | Pereira F.D.,IF Goiano | Souchie E.L.,Soil and Agricultural Engineering | Silva F.G.,Soil and Agricultural Engineering
Plant Tissue Culture and Biotechnology | Year: 2013

The effect of constitution of the culture medium, different concentrations of sucrose, and different growth conditions on the germination of seeds and growth of explants of ″mangaba″ (Hancornia speciosa Gomes) were evaluated in two in vitro assays. In assay one, the physical constitution of a medium (solid and liquid) and different concentrations of sucrose (0, 15, 30, 45, 60, 75, and 90 g/l) were tested, and seed germination was found to be variable. In assay two evaluation of the effect of different growth conditions (with and without agitation) on the in vitro growth of explants. Present results showed that ″mangaba″ had the highest percentage of germination and potentiality when inoculated in a liquid medium with (15 g/l) or without sucrose. The medium without agitation resulted in a better growth of explants the average length number of buds.

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