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AVALIAÇÃO DA COMPOSICÃO PROTÉICA E AMINOACÍDICA DE FORRAGEIRAS TROPICAIS Texto completo
2008
Lídia Ferreira Miranda | Elzania Sales Pereira | Norberto Mario Rodriguez | Miguel Marques Gontijo Neto | Alex Martins Varela de Arruda
Objectified in this study to determine the composition of crude protein (CP) and amino acids (AA) in the perennial soy (Neonotonia wightii), leucaena (Leucaena leucocephala) and guandu (Cajanus cajan). The samples were analyzed by high performance liquid chromatography (HPLC) after the acid hydrolyses or preoxidation. The higher and lower levels of soluble crude protein (A fraction) were obtained with leucaena and guandu (33.92 and 16.87%, respectively) and the higher and lower levels of acid detergent insoluble protein (ADIP) were obtained with guandu and rami (26.68 e 2.83%). It were registered higher concentration of essential amino acids in rami (48.06%) and lower concentration in cassava (42.20%), being verified with it the higher level in lysine and methionine to the rami (6.41e 2.66%, respectively), and lower level to the cassava (5.49%) and to the guandu (2.02%) respectively. It were registered too higher concentration of non-essential amino acids to the rami (47.11%) and the lower level to the perennial soy (42.20%). Therefore, it can be concluded to the correct evaluation of these foods, should be considered the amino acid composition and fractionation of the crude protein, because the simply analysis of crude protein don't represent precisely and don't propitiate the correct estimative of the profile and biodisponibility of amino acids that them escape and flow to the intestinal tract of the animal and your metabolism.
Mostrar más [+] Menos [-]QUANTIDADE DE ESTERCO BOVINO NO DESEMPENHO AGRONÔMICO DA RÚCULA (Eruca sativa L.), CULTIVAR CULTIVADA Texto completo
2008
Gardênia Silvana de Oliveira Rodrigues | Salvador Barros Torres | Paulo César Ferreira Linhares | Romenique da Silva de Freitas | Patrício Borges Maracajá
This study evaluated the effect of bovine manure in the agronomic performance of salad rocket cv. Cultivada. The completely randomized design was used, with six treatments and four repetitions, with each recipient constituting a parcel. The treatments had consisted of differents amounts of bovine manure incorporated to the soil (20, 40, 60, 80, 100 t.ha¯¹), and the witness. The evaluated characteristics had been: height of plant (cm), leaf number for parcel, mass of the green substance (g) and mass of the dry substance (g) for parcel. The amount of 60 t.ha¯¹ promoted greater height of plants, greater leaf number, greater mass of the green substance and greater of mass of the dry substance.
Mostrar más [+] Menos [-]EFFECT OF TANNERY SLUDGE ON THE CELLULOSE DECOMPOSITION IN THE SOIL Texto completo
2008
Ademir Araújo | Valdinar Santos
The effect of tannery sludge on the cellulose decomposition was studied in the laboratory as a dose-response experiment. Cellulose decomposition rates were determined by the weight loss from cellulose filter disks buried in soil samples. The amount of tannery sludge used were 0, 11, 22, 44, 88 and 172 Mg ha-1, and, corresponded, respectively, to incorporation of 250, 500, 1,000, 2,000 and 4,000 mg Cr3+ kg-1 of soil. The cellulose filter disks presented different degrees of decomposition with application of tannery sludge. After 30 days of incubation the cellulose decomposition rate, corresponding to application of 11, 22 and 44 Mg ha-1 were higher than soil untreated (control), respectively 5%, 20% and 10%, but the difference was only significant for the 22 Mg ha-1. There was a significant decrease of 50% in the cellulose decomposition, compared to untreated soil (control), with application of 172 Mg ha-1 of tannery sludge. This study has demonstrated that cellulolytic activities are susceptible to be inhibited by high rates of tannery sludge. When applied to low amounts, tannery sludge did not affect cellulose decomposition by the soil microflora.
Mostrar más [+] Menos [-]FORMATION OF CASHEW AND TAMARIND ROOTSTOCKS INFLUENCED BY NITROGEN LEVELS Texto completo
2008
Vander Mendonça | Anna Luiza Cardoso de Almeida | Katchen Julliany Pereira Silva | Thaiza Mabelle de Vasconcelos Batista | Lenilton Alex de Araújo Oliveira
The purpose of this study was to assess the seedling growth of cashew and tamarind rootstocks with nitrogen fertilization. To this end, two experiments were conducted in the Production Sector of the State University of Mato Grosso do Sul (UEMS), at the University Unit of Cassilândia (UUC), Brazil. Five nitrogen levels were tested: 0, 400, 800, 1600 and 3200 mg/dm3 of N in the substrates. The experimental design was in randomized blocks with 4 repetitions and ten plants per parcel. 20 ml of urea solution were added to each application from each treatment containing 45% nitrogen. The application was repeated four times. Ninety days after planting, we assessed plant height (cm), number of leaves/seedling, plant diameter (mm), roots, aerial part, root and total dry matter (g/seedling). Nitrogen fertilizer in doses of up to 2000 mg/dm3 of N in the substrate ensures better cashew and tamarind rootstock seedling quality. A 3200 mg/dm3 dose of N in the substrate had a growth depression effect on the rootstock seedlings.
Mostrar más [+] Menos [-]ISOTERMAS DE ADSORÇÃO DE COBRE POR BENTONITA Texto completo
2008
Gilvanise Alves Tito | Lúcia Helena Garófalo Chaves | Susane Ribeiro | Ramara Sena Souza
In environmental studies is important to know the adsorption process of heavy metals in clay minerals, since they are able to immobilize these metals. Knowing the cations adsorption is influenced for several factors, the objective of this research was to study the copper adsorption process by bentonite clay and to evaluate the electrolyte type and pH influence on this process. In order to quantify the adsorbed copper, 2 g of bentonite clay were equilibrated for 24 hours with 20 mL of a NaNO3 (0,01 mol L-1) solution and with 20 mL of water containing different quantities of copper (5, 10, 20, 40, 60, 80, 100,120 mg L-1) as background solutions of pH values 4 and 6. Langmuir's adsorption equation in its linearized form was applied and the values of the maximum capacity and those of the constant related to the bonding energy were obtained. Langmuir isotherms presented two distinct adsorption regions at both pH 4 and pH 6, showing that the adsorptive phenomenon occurs in two distinct stages. The adsorption of copper depends on pH and ionic strength and it increased with an increase in pH and decreased slightly with an increase in ionic strength. The maximum capacity of adsorption and the bonding energy varied with the pH, with electrolyte used and with the adsorption regions.
Mostrar más [+] Menos [-]COMPORTAMENTO EQÜINO DURANTE O PERÍODO DE ÓCIO COM DIETAS DE DIFERENTES QUALIDADES NUTRICIONAIS Texto completo
2008
Leonir Bueno Ribeiro | Carlos Eduardo Furtado | Cleiton Luiz Tonello | Orlando Rus Barbosa | Roberta Ariboni Brandi
The objective was to evaluate the horse behavior during the total time at leisure in testing of metabolism. Four male crossbred horses, with average age of eight years and alive weight of 376,09 kg, were used in an experimental delineation in Latin square (4 x 4), lodged in individual boxes. The treatments had been constituted by four diets: Alfalfa hay + Concentrated (ACSP); Tifton hay (low nutritional quality) + Concentrated (TCSP); Tifton hay (low nutritional quality) + Concentrated with Probiotic (TCCP); Alfalfa hay + Concentrated with Probiotic (ACCP). It was observed a statistical difference (P<0.05) in the percentages of total resting time, alert and head low, in the (ACSP) treatment, showing elevate value 76,85; 4,65 and 1.49%, respectively. The inquietude either showed a significative difference (P<0.05) showing values 5.29% for (ACCP) and (TCCP), respectively. The alimentary activities either showed a statistical difference (P<0.05) for (ACSP and ACCP), showing 10,45% average values. During prolonged resting times, the appeared of behavior disturbs were evident.
Mostrar más [+] Menos [-]BIOQUALIDADE DE ÁREA DEGRADADA PELA EXTRAÇÃO DE ARGILA, REVEGETADA COM Eucalyptus spp. E SABIÁ Texto completo
2008
Quíssila Renata Batista | Marta Simone Mendonça Freitas | Marco Antonio Martins | Cristiane Ferreira da Silva
An experiment was carried out to evaluate the biological and chemical soil quality of a degraded area of clay extraction, after it has been re-vegetate with Eucalyptus spp. and Mimosa caesalpiniifolia, cultivated in single or inter-cropping systems. It was used as soil biological quality indicators the total microbial activity, evaluated by enzymatic method of the hydrolize of the fluoresceína diacetato (FDA) and soil total respiration; and, the diversity of arbuscular mycorrhizal fungi (AMF). To evaluate the chemical quality it was used some chemical characteristics of the soil. The random blocks experimental design was used, with nine treatments + control. The treatments were constituted of single plantings of Mimosa caesalpiniifolia (sabiá) and of four species of eucalyptus (Eucalyptus camaldulensis, Eucalyptus pellita, Eucalyptus tereticornis, Eucalyptus robusta) and intercropping plantings of sábia with the four eucalyptus species, with four repetitions. The control treatment (degraded soil without any re-vegetation) was an area inside of the digging of clay extraction, with four replicates. The experimental unit was composed by 36 plants. After 36 months, the soils with single plantings of E. pellita and sabiá presented, in relation to the control treatment (without vegetation), larger microbial activity, evaluated by both the method of FDA and by total respiration, larger diversity of AMF and larger concentrations of nitrogen. The microbial soil activity, as much for the method of FDA as for the breathing, it was larger in intercropping plantings of E. pellita with sabiá, when compared with the control treatment. The AMF Glomus and Acaulospora were largest genus found in all treatments, however, in the control treatment it was found only the AMF species Glomus macrocarpum.
Mostrar más [+] Menos [-]DIMENSIONAMENTO E AVALIAÇÃO DA QUALIDADE DA IRRIGAÇÃO DE UMA LINHA LATERAL DE PIVÔ CENTRAL REBOCÁVEL PARA IRRIGAÇÃO EM CANA-DE-AÇÚCAR Texto completo
2008
Carlos Henrique de Azevedo Farias | Gabriel Saturnino de Oliveira | Francisco Lourival de Sousa | Halan Vieira de Queiroz Tomaz | Francisco de Queiroz Porto Filho
The design of a lateral line was an applied tool with the objective of determining, accurately, the lateral line final pressure, considering the presence of a hydraulic cannon or not in the final extremity of the piping; so that the irrigation planner has the exact science of the entrance pressure in the central pivot. Being able to like this, design projects more optimized in terms of energy. The evaluation of the system provided the rebuilding of the curve of control of the equipment taking to the producer the reality of his/her overhead irrigation. The hydraulic project of the system provides the visualization of the theoretical behavior of the system that, when compared, to the real behavior, position in execution, it can serve as auditing for ends of correction of the possible flaws, be of project and production or of execution.
Mostrar más [+] Menos [-]CONDICIONAMENTO OSMÓTICO DE SEMENTES Texto completo
2008
Maria Célia Aroucha Santos | Edna Maria Mendes Aroucha | Marcelo Sobreira de Souza | Roberto Ferreira da Silva | Pahlevi Augusto de Sousa
The osmotic conditioning is a technique that uses inert chemically substances with the aim to begin the essential biochemical processes to embryo growth without there is seedling protrusion. This revision refer the several factors that interfere in the osmotic conditioning technique, as well as the use of chemistries, temperature, conditioning period, drying, storage and seeds revigoration. Other aspects as reduced time to obtain seedling, dormance overcome and seed revigoration.
Mostrar más [+] Menos [-]STUDY OF LIMNOLOGICAL VARIABLES IN NURSERIES OF Colossoma macropomum (Cuvier; 1818) AND Pseudoplatystoma corruscans (Agassiz, 1829) Texto completo
2008
Katia Santos Bezerra | Miguel Arcanjo Santos Neto | João Pereira Neto | Alfredo Oliveira Gálvez | Luis Otavio Brito
Ecosystem's aquatic metabolism comprises three main levels: production, consumption and decomposition. For the aquaculture fundament the knowledge and accompaniment of the biotic and abiotic factors for a sustainable production. The study evaluated the dynamics of variables limnologics in ponds: Colossoma macropomun (CM) and Pseudoplatystoma corruscans (PC), during a 24hs. The work was accomplished in the Station of Fish farming of Chesf, Paulo Afonso-BA. The variables oxygen (O2), temperature (T°C) and pH were measured every two hours, shines and transparency. Samples of water were analysis ammonia, nitrite, nitrate, inorganic and organic phosphate, total phosphors, chlorophyll a, identification of the plankton and phytobenthos were collected at 09:00, 15:00 and 21:00hs. All the variables physical-chemistries were inside of the ideal for culture species. The group phytoplankton most frequent no CM was Cyanophyta and Bacillariophyta. while in PC was Xanthophyta. The group phytobentic most frequent no CM was Xanthophyta, while in PC was Bacillariophyta. The group of Copepods was the most evident zooplankton in CM and there was absence of Rotifers in PC.
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