Empresa de Pesquisa Agropecuaria do Rio Grande do Norte EMPARN

Rio de Janeiro, Brazil

Empresa de Pesquisa Agropecuaria do Rio Grande do Norte EMPARN

Rio de Janeiro, Brazil

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Marrocos S.T.P.,UFERSA | de Medeiros M.A.,UFERSA | Grangeiro L.C.,UFERSA | Torres S.B.,Empresa de Pesquisa Agropecuaria do Rio Grande do Norte EMPARN | de Lucena R.R.M.,Engineering Agr
Revista Brasileira de Sementes | Year: 2011

The objective of this study was to determine the physiological maturity of buttennut squash seeds, cv. Menina Brasileira, in relation to fruit age. Seeds from fruits collected at 20, 30, 40, 50 and 60 days after anthesis (DAA) were used. The squash plants were grown on the central campus of the Universidade Federal Rural do Semiárido, Mossoró, RN - Brazil, from December 2007 to March 2008. The harvested fruits were rested prior to seed extraction and determination of the water content and dry weight. The physiological quality of the seeds was evaluated from tests of germination, germination first count, emergence speed index and accelerated aging. The seed water content decreased from 76% to 49% during the study period. The seed physiological quality increased with fruit age, reaching physiological maturity at about 60 DAA. The fruits may be harvested between 50 and 60 DAA.


Lima G.F.C.,EMBRAPA - Empresa Brasileira de Pesquisa Agropecuária | da Silva J.G.M.,Empresa de Pesquisa Agropecuaria do Rio Grande do Norte EMPARN | de Aguiar E.M.,Federal University of Rio Grande do Norte | Ferreira M.A.,Federal Rural University of Pernambuco | And 2 more authors.
Revista Caatinga | Year: 2011

The aim of this paper was to evaluate the performance of lactating 5/8 cross-breed Holstein/ Zebu cows, and digestibility of diets with different levels (0%; 5.5%; 13.0%; 20.5% and 26.0%) of melon (Cucumis melo L.) fruits in replacement to wheat bran, on dry matter basis. Five cows averaging 380 kg and 10 kg of daily milk production were used. The experiment was conducted in a 5x5 latin square design, including five animals, five experimental periods and five levels of melon fruits addition. The length of each period of evaluation was 14 days (seven for the adaptation of the animals to the diets and seven for data collection). The intake of dry matter (DM) (kg/day, %BW and g/kg 0.75), organic matter (OM), crude protein (CP), neutral detergent fiber (NDF), total carbohydrates (TCH), ether extract (EE) was unaffected (P>0,05) by the levels of melon fruits (12.52; 3.20; 142.42; 11.62; 1.29; 8.15; 10.21 and 0.41, respectively). Crude protein (CPD) and neutral detergent fiber (NDFD) digestibilities decreased linearly, and the digestibility of non-fiber carbohydrates (NFCD) increased linearly. The estimative for total digestible nutrients (TDN) presented a quadratic response with the addition of increasing levels of melon fruits in the diet. Milk production and fat corrected milk production, averaging 9.09 and 9.78 kg/day respectively, increased linearly with the increment of melon fruits participation in the diets, which points out a possibility for utilization of this co-product to feed dairy cows.


de Oliveira F.N.,Federal Rural University of the Semiarid Region | Torres S.B.,Empresa de Pesquisa Agropecuaria do Rio Grande do Norte Emparn | Vieira F.E.R.,Federal Rural University of the Semiarid Region | de Paiva E.P.,Federal Rural University of the Semiarid Region | Dutra A.S.,Federal University of Ceará
Pesquisa Agropecuaria Tropical | Year: 2012

The seed quality evaluation is essential in quality control programs. Thus, vigor tests have been developed to differentiate seed lots, due to the limitations of the germination test. This study aimed at evaluating the electrical conductivity test efficiency for determining the physiological quality of sunflower seeds. Ten lots of sunflower seeds (Catissol and Multissol cultivars) were used. Initially, the quality of each lot was determined, besides the seeds moisture content, by using tests of germination, first counting and seedling emergence, in a greenhouse. Then, the seeds were submitted to the electrical conductivity test, for four soaking periods (6, 12, 18 and 24 hours), by using disposable plastic cups containing 25 and 50 seeds, in 50 mL and 75 mL of deionized water, at 25°C and 30°C. The experimental design was completely randomized, in a 5x4 factorial scheme (five lots and four soaking periods), separately for each cultivar, with four replications. It was possible to conclude that the electrical conductivity test combining 25°C, 75 mL of deionized water and 50 seeds was sufficiently sensitive to evaluate the physiological quality of sunflower seeds.


da Silva J.G.M.,Empresa de Pesquisa Agropecuaria do Rio Grande do Norte EMPARN | Lima G.F.C.,EMBRAPA - Empresa Brasileira de Pesquisa Agropecuária | de Aguiar E.M.,Federal University of Rio Grande do Norte | de Melo A.A.S.,Federal Rural University of Pernambuco | Rego M.M.T.,Federal University of Rio Grande do Norte
Revista Caatinga | Year: 2010

The objective of this study was to evaluate the utilization effects of two native cacti named mandacaru (Cereus jamacaru DC.) and xiquexique [Pilosocereus gounellei (A. Weber ex K. Schum.) Bly ex Rowl.] associated with sabiá (Mimosa caesalpiniifolia Benth.) and flor de seda (Calotropis procera (Ait.) R.Br.) about the nutrient intake, daily weight gain, and feed conversion in sheep feedlot. Twenty Morada Nova male hair sheep with an average weight of 15.40, were allocated in a randomized block design, with four treatments and five replicates. The experimental treatments consisted of four diets (30% native cacti + 30% shrub hay + 40% concentrate, on dry matter basis): T1- xiquexique + sabiá hay; T2- xiquexique + flor de seda hay; T3- mandacaru + sabiá hay e T4- mandacaru + flor-de-seda hay. The concentrate consisted of 100.0% algarroba (Prosopis juliflora (Sw) DC) pods. No significant difference was observed for daily weight gain which averaged 88.77 g, and also for voluntary intakes of dry matter, organic matter, ether extract, total carbohydrates, nonfiber carbohydrates, total digestible nutrients and digestible energy in relation to g/day, %BW and g/kg0.75. Significant differences were observed for intake of water in g/day.


Costa R.G.,Federal University of Paraiba | De Lima C.A.C.,Empresa de Pesquisa Agropecuaria do Rio Grande do Norte EMPARN | De Medeiros A.N.,Federal University of Paraiba | Lima G.F.C.,Empresa de Pesquisa Agropecuaria do Rio Grande do Norte EMPARN | And 2 more authors.
Revista Brasileira de Zootecnia | Year: 2011

The objective of this trial was to evaluate the influence of the addition of melon fruit replacing ground corn in diets on the centesimal composition and sensory analysis of meat from Morada Nova lambs. Twenty Morada Nova males with average weight of 15 kg were distributed in a completely randomized design with four increasing levels (0, 30, 60 and 100%) of melon in substitution of ground corn, each one with five replications. To determine the chemical composition of meat, the semimembranosus muscle was used. With the muscle longissimus dorsi sensory analysis, the attributes of taste, odor, juiciness, softness and overall appearance were conducted by quantifying, by means of scoring. Data analysis showed no significant differences in proximate composition (moisture, protein, lipid and ash). At the sensory analysis, juiciness showed quadratic response with a maximum peak of 5.18 and the other organoleptic qualities (flavor, tenderness and overall appearance) were not affected by the inclusion of melon replacing corn in diets. The use of melon in diets for Morada Nova sheep diets does not affect the main organoleptic qualities of meat. © 2011 Sociedade Brasileira de Zootecnia.


da Silva J.G.M.,Empresa de Pesquisa Agropecuaria do Rio Grande do Norte EMPARN | de Melo A.A.S.,Federal Rural University of Pernambuco | Rego M.M.T.,Federal University of Rio Grande do Norte | da Costa Lima G.F.,EMBRAPA - Empresa Brasileira de Pesquisa Agropecuária | de Aguiar E.M.,Federal University of Rio Grande do Norte
Revista Caatinga | Year: 2011

The objective of this study was to evaluate the utilization effects of two native cacti named mandacaru (Cereus jamacaru DC.) and xiquexique [Pilosocereus gounellei (A. Weber ex K. Schum.) Bly ex Rowl.] associated with sabiá (Mimosa caesalpinifolia Benth.) and flor de seda (Calotropis procera (Ait.) R.Br.) shrub hays on nutrient intake, milk production and composition of Saanen dairy goats'. Eight goats averaging 43.4 kg were used in two 4x4 latin square experimental design. The experimental treatments consisted of four diets (30% native cacti + 30% shrub hay + 40% concentrate, on dry matter basis): Xiquexique + flor de seda hay; xiquexique + sabiá hay; mandacaru + flor de seda hay and mandacaru + sabiá hay. The ingredients proportion of the concentrate in the diet was 57.5% algaroba (Prosopis juliflora (Sw) DC); 37.5% soybean meal and 5% mineral mixture. Significant differences were observed for voluntary intakes of dry matter, organic matter, ether extract, neutral detergent fiber, acidy detergent fiber, total carbohydrates, nonfiber carbohydrates and total digestible nutrients in relation to g/day and g/kg0.75. No significant differences were observed for milk production (averaged 1,294.39 g/day), and milk composition.


Cruz A.F.,Federal Rural University of Pernambuco | Passos M.A.A.,Federal Rural University of Pernambuco | Da Silva Jose A.A.,Federal Rural University of Pernambuco | Torres S.B.,Empresa de Pesquisa Agropecuaria Do Rio Grande Do Norte EMPARN | De Oliveira I.S.,University of Pernambuco
Scientia Forestalis/Forest Sciences | Year: 2012

This study aimed at defining procedures for acceptable analytical methods for the germination of the Bowdichia virgilioides Kunth (sucupira) species, with seeds from selected trees in the Atlantic Forest biome. Substrates used were sand, blotting paper (BP), vermiculite, germitest paper and paper towels (PT). Germination was tested at the following temperatures: constant 25° C and 30° C and alternating temperatures of 20-30° C. The luminosity was analyzed by the influence of continuous light or lack of it. The statistical design was completely randomized 3 × 4 × 2 (3 temperatures, 4 substrates and 2 light environments). All treatments had four replicates containing 25 seeds each. The evaluated characteristics were: germination, first counting, germination speed index (GSI) of seedlings and number of normal seedlings. Germination was assessed daily by direct counting on two occasions: first the radicle emerging and then the formation of normal seedling, this last one in accordance with the provisions of the RAS. Vermiculite interacting with the constant temperatures of 25 and 30 °C plus the paper towel at the temperature of 30° C provided the best germination results with normal seedlings. Therefore, it was the most suitable treatment to analyze the germination and early growth of seedlings for this species.


de Oliveira F.N.,UFERSA | Torres S.B.,Empresa de Pesquisa Agropecuaria do Rio Grande do Norte EMPARN | Bebedito C.P.,UFERSA
Revista Caatinga | Year: 2011

The objective of this work was to assess the agronomic performance and plant morphological traits of eight lima-bean (Phaseolus lunatus L.) accessions in the edafoclimatic conditions of Mossoró, RN, Brazil. A randomized complete blocks design with eight treatments and four replications was used. The treatments consisted of the BSF 01, BSF 02, BSF 04, BSF 07, BSF 08, BSF 08A, BSF 12 and BSF 15 lima-bean accessions. The following traits were evaluated: growth habit, mean time of blooming, pod length and width, number of pods per plant, number of seeds per pod, weight of 100 seeds and seed yield. It was observed that all lima-bean accessions were of indeterminate growth habit, except for BSF 07B and BSF 12 that show determinate growth habit. BSF 12 and BSF 15 accessions were, respectively, the earliest and the largest seed size. They was not distinction between the lima-bean accessions for pod length, but significant differences were observed on pod width, with BSF 12 and BSF 02 accessions showing the highest and the less width. The accession BSF 01 can be the best alternative for Mossoró country growers because this material had higher number of pods per plant and higher seed yield. The accessions BSF 04, BSF 07B and BSF08 are potentially useful for lima-bean because these materials had higher number of pods per plant, higher seed yield and characteristics of pods satisfactory.

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