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Search Results: 1 - 10 of 16912 matches for " Barros Nelson Nogueira "
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Composi o centesimal e lipídica da carne de ovinos do nordeste brasileiro
Zapata Jorge Fernando Fuentes,Nogueira Cynthia Monteiro,Seabra Larissa Mont'Alverne Jucá,Barros Nelson Nogueira
Ciência Rural , 2001,
Abstract: O objetivo desta pesquisa foi avaliar a composi o centesimal e lipídica da carne de ovinos do Nordeste brasileiro. Para isso, foram utilizados 21 borregos, machos inteiros, sendo 10 animais Somalis Brasileira ′ Crioula (SB-C) e 11 animais Santa Inês ′ Crioula (SI-C). Os animais receberam duas dietas durante a fase de amamenta o: feno de capim-gram o (Cynodon dactylon) + feno de leucena (Leucaena leucocephala) ad libitum (D1) e feno de capim-gram o + feno de leucena + concentrado com 20% de proteína bruta ad libitum (D2). N o foi observado o efeito dos genótipos nem do sistema de alimenta o sobre a composi o centesimal e lipídica da carne. Os valores de umidade, proteína, cinzas e gordura, variaram de 76,12 a 76,19%, 19,19 a 19,46%, 1,08 a 1,10% e 2,01 a 2,39%, respectivamente. Os valores de colesterol variaram de 54,43 a 60,05mg por 100g de carne. Os ácidos graxos encontrados em maior quantidade na fra o lipídica da carne dos animais estudados foram oleico, palmítico e esteárico. De acordo com os resultados obtidos, conclui-se que a carne de ovinos do Nordeste brasileiro apresenta uma composi o centesimal e lipídica similar às carnes de ovinos de clima temperado.
Composi??o centesimal e lipídica da carne de ovinos do nordeste brasileiro
Zapata, Jorge Fernando Fuentes;Nogueira, Cynthia Monteiro;Seabra, Larissa Mont'Alverne Jucá;Barros, Nelson Nogueira;Borges, ?ngela Silva;
Ciência Rural , 2001, DOI: 10.1590/S0103-84782001000400022
Abstract: the objective of this study was to evaluate the proximate and lipidic compositon of lamb meat from tropical sheep reared in northeastern brazil. twenty-one rams, ten ? somalis brasileira ? ′ crioula (sb-c) and 11 ? santa inês ′ ? crioula (si-c) were used. two feeding regimes were utilized during weaning: grass hay (cynodon dactylon) + leucena hay (leucaena leucocephala) ad libitum (d1) and grass háy + leucena hay + 20% crude protein concentrate ad libitum (d2). it was not observed effect of crossbreed or feeding regime on proximate and lipidic composition of the meat. moisture, protein, ash and fat values varied from 76.12 to 76.19%, 19.19 to 19.46%, 1.08 to 1.10% and 2.01 to 2.39%, respectively. cholesterol content ranged from 54.43 to 60.05mg/100g of meat. the more abundant fatty acids in lamb fat were oleic, palmitic and stearic. based on these results, it can be concluded that lamb meat from notheastern brazil has proximal and lipidic compositions similar to that animals from temperate regions of the world.
Feno de cunh? (Clitoria ternatea L.) para acabamento de cordeiros
Barros, Nelson Nogueira;Rossetti, Adroaldo Guimar?es;Carvalho, Rubênio Borges de;
Ciência Rural , 2004, DOI: 10.1590/S0103-84782004000200025
Abstract: thirty two crossbred lambs were used in a 70 day study at embrapa caprinos, in sobral, ce, brazil to evaluate the influence of concentrate levels on finishing diets under confinement. the treatments were the following roughage to concentrate relations: 100% to 0% (t1), 85% to 15% (t2), 70% to 30% (t3) and 55% to 45% (t4). the roughage was cunh? hay (clitoria ternatea l), and the concentrate was composed of corn (75%) and soybean meal (25%). the adjustments of the proportions were made daily, based on the roughage intake, served ad libitum. it was observed that the total dry matter intake increased, the forage intake decreased, the feed efficiency improved and the daily weight gain increased (p<0.01) with the increase in diet concentrate. additionally, it was observed a quadratic effect on forage intake and feed efficiency with minimum values of 25.99g of concentrate/kg0,75/day and 21.12g of concentrate/kg0,75/day, respectively. all profit/monetary units were positive and did not differ (p>0.05) among treatments. it was concluded that any of the diets studied can be used for finishing lambs.
Características de crescimento de cordeiros F1 para abate no semi-árido do Nordeste do Brasil
Barros, Nelson Nogueira;Vasconcelos, Vania Rodrigues de;Lobo, Raimundo Nonato Braga;
Pesquisa Agropecuária Brasileira , 2004, DOI: 10.1590/S0100-204X2004000800012
Abstract: the aim of this work was to determine the influence of the ram in the growth traits of 303 slaughter lambs of ? somalis brasileira x ? undefined breed (srd) and ? santa inês x ? srd genetic groups. the animals were weighted each 14 days until weaning at dry season and up to 140 days of age at rainy season. the genetic group and the year of birth did not influence (p>0.05) any of the analyzed traits. the month of birth influenced (p<0.05) weights at birth, at 56 days of age and at weaning, and weight gain until weaning. february was the best month to birth of lambs. single animals weighted more and gained more weight (p<0.05) than those of multiple births, in all ages and studied intervals, except in the period between weaning and the age of 140 days. males were heavier and gained more weight than females, both in the pre-weaning and in the post-weaning period. the two analyzed genetic groups are similar as to body weight and weight gains, both in the pre-weaning and in the post-weaning period.
Eficiência bioecon?mica de cordeiros F1 Dorper x Santa Inês para produ??o de carne
Barros, Nelson Nogueira;Vasconcelos, Vania Rodrigues de;Wander, Alcido Elenor;Araújo, Marcelo Renato Alves de;
Pesquisa Agropecuária Brasileira , 2005, DOI: 10.1590/S0100-204X2005000800014
Abstract: the objective of this work was to evaluate bioeconomic efficiency of f1 dorper x santa inês lambs for meet production. performance of f1 dorper x santa inês lambs in raising and fattening phases was analyzed. the production phase of lambs was realized in native pastures ("caatinga") and the finishing phase was in confinement. the ewes were supplemented during the last 50 days of pregnancy and the first 30 days of lactation. lambs were weaned at 70 days of age, divided into three lots, confined and fed elephant grass (pennisetum purpureum) ad libitum, and concentrate in the proportion of 1.5%, 2.5% and 3.5% of live weight, respectively. lambs sex did not have significant influence on birth weight, as well as on weaning weight and weight gain until weaning. in production and confinement phases, lambs of single births were superior to double births ones considering these variables. linear effect was significant for weight and for weight gain, at 30 and 50 days of confinement. the three inclusion levels of concentrate were economically viable. gross margins of live weight for each kg of lamb produced were r$ 0.26 kg-1, r$ 0.30 kg-1 and r$ 0.36 kg-1 of live weight to concentrates of 1.5%, 2.5% and 3.5%, respectively. the best economics results were obtained when the concentrate level was 3.5% of live weight.
Efeito do genótipo sobre a produ??o e a composi??o do leite de cabras mesti?as
Barros, Nelson Nogueira;Silva, Francisco Luiz Ribeiro da;Rogério, Marcos Cláudio Pinheiro;
Revista Brasileira de Zootecnia , 2005, DOI: 10.1590/S1516-35982005000400034
Abstract: the objective of this trial was to study the production of thirty-five crossbred goats: 1/2brown alpine x 12 1/2moxoto (1/2ba-m), 11 3/4brown alpine x 1/4moxoto (3/4ba-m), and 12 tricross (1/2anglo nubian x 1/4moxoto x 1/4brown alpine). after birth, the kids were separated from their mothers. goats were milked twice a day and milk composition determined weekly. animals were housed in collective pens and received a diet composed of sorghum silage (ad libitum) plus concentrate that were formulated to allow 2.5 kg/d of milk yield. animals were weighted every 14 days. milk production did not differ among genotypes. however, 4% fat corrected milk was greater for 1/2ba-m than the remaining groups. no significant differences were observed for milk composition (fat, protein, and total solids) across genotypes in the current trial.
Feno de cunh (Clitoria ternatea L.) para acabamento de cordeiros
Barros Nelson Nogueira,Rossetti Adroaldo Guimar?es,Carvalho Rubênio Borges de
Ciência Rural , 2004,
Abstract: Foram utilizados 32 cordeiros, mesti os, durante setenta dias em estudo na Embrapa Caprinos, em Sobral, CE, para determinar a influência do nível de concentrado em dietas para acabamento de cordeiros em confinamento. Os tratamentos foram as seguintes rela es forragem:concentrado: 100%:0% (T1), 85%:15% (T2), 70%:30% (T3) e 55%:45% (T4). A forragem fornecida era feno de cunh e o concentrado era composto de 75% de milho e 25% de farelo de soja. O ajuste das propor es foi feito diariamente, com base no consumo de volumoso, servido ad libitum. Com o aumento do nível de concentrado na dieta dos animais, observou-se incrementos lineares (P<0,01) no consumo de matéria seca total e no ganho de peso diário, um decréscimo no consumo de forragem e uma melhoria na convers o alimentar. Adicionalmente, foi observado efeito quadrático no consumo de forragem e na convers o alimentar, com mínimos estimados em 25,99g de concentrado/kg0,75/dia e 21,12g de concentrado/kg0,75/dia, respectivamente. Todas as margens brutas estimadas foram positivas e n o diferiram (P>0,05) quanto aos tratamentos. Conclui-se que todas as ra es testadas podem ser utilizadas para termina o de cordeiros, em confinamento.
Influência do grupo genético e da alimenta??o sobre o desempenho de cordeiros em confinamento
Barros, Nelson Nogueira;Vasconcelos, Vania Rodrigues de;Araújo, Marcelo Renato Alves de;Martins, Espedito Cezário;
Pesquisa Agropecuária Brasileira , 2003, DOI: 10.1590/S0100-204X2003000900013
Abstract: the objective of this work was to establish the influence of breeding ram and feeding on performance of lambs in confinement. the experimental design was completely randomized, in a 2x4 factorial arrangement. the treatments were two genetic groups (santa inês x not defined breed (ndb) and somalis x ndb) and concentrate (corn, soybean meal plus mineral salt) at 15%, 30%, 45% and 60%. thirty two animals were confined in individual stalls and each was one repetition. the diets were composed by concentrate and roughage, leucaena hay (leucaena leucocephala), as a complete ration. the slaughter weight increased and the feed efficiency improved (p<0.05) as concentrate in diet was increased. a quadratic effect on dry matter intake and organic matter intake with maximum values of 35.29% and 35.36%, respectively, was observed. all estimated gross margin were positive. there was no difference (p>0.05) among concentrates; however, the genetic group somalis x ndb was superior (p<0.05) to santa inês x ndb.
SUPLEMENTA??O ALIMENTAR DE CABRAS ANGLO-NUBIANAS NA éPOCA CHUVOSA, NA REGI?O SEMI-áRIDA DO NORDESTE BRASILEIRO
BARROS, NELSON NOGUEIRA;MESQUITA, ROBERTO CéSAR MAGALH?ES;ARAúJO, MARCELO RENATO ALVES DE;CARVALHO, RUBêNIO BORGES DE;
Pesquisa Agropecuária Brasileira , 1999, DOI: 10.1590/S0100-204X1999001100023
Abstract: this experiment was carried out to evaluate the influence of food supplementation on milk production of anglo-nubian goats, during the rainy season, in semi-arid region of northeast brazil. twenty four goats were maintained in lowered "caatinga", distributed randomly according to the parturition order and milk production in three supplementation levels: n0 - no supplementation, n1 - 150 g of concentrate/animal/day and n2 - 300 g of concentrate/animal/day. there was no significant difference (p>0.05) between supplementation levels. milk production was described by multiple regression to lactation period, in week. the results showed that the best option to produce milk with anglo-nubian, during the wet season, is 300 g of concentrate/animal/day.
Influência do grupo genético e da alimenta o sobre o desempenho de cordeiros em confinamento
Barros Nelson Nogueira,Vasconcelos Vania Rodrigues de,Araújo Marcelo Renato Alves de,Martins Espedito Cezário
Pesquisa Agropecuária Brasileira , 2003,
Abstract: O objetivo deste trabalho foi estabelecer a influência do reprodutor e da alimenta o sobre o desempenho de cordeiros em confinamento. O delineamento experimental foi o inteiramente casualizado, com arranjo fatorial 2x4, costituído de dois grupos genéticos (Santa Inês x sem ra a definida (SRD) e Somalis x SRD) e concentrado de milho em g o, farelo de soja e sal mineral a 15%, 30%, 45% e 60%. Trinta e dois animais foram confinados em baias individuais e cada um constituiu uma repeti o. As dietas eram compostas de feno de leucena (Leucaena leucocephala) e concentrado, na forma de ra o completa. O aumento de concentrado na dieta dos animais causou incrementos lineares (P<0,05) no peso de abate e melhoria na convers o alimentar. Houve efeito quadrático no consumo de matéria seca e de matéria organica, com máximos estimados em 35,29% e 35,36% de concentrado, respectivamente. Todas as margens brutas de lucro estimadas foram positivas. N o houve diferen a (P>0,05) entre os concentrados, porém o grupo genético Somalis x SRD mostrou-se superior (P<0,05) ao Santa Inês x SRD.
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