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Search Results: 1 - 10 of 189435 matches for " Souza Alexandre Nunes Motta de "
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Desempenho de bezerros desmamados precocemente, mantidos em pastagem de capim elefante (Pennisetum purpureum, Schum), com diferentes níveis de suplementa??o
Pellegrini, Luiz Giovani de;Restle, Jo?o;Neumann, Mikael;Souza, Alexandre Nunes Motta de;
Ciência Rural , 2006, DOI: 10.1590/S0103-84782006000600034
Abstract: the experiment was conducted in regi?o central do rio grande do sul, in order to evaluate the performance of the steers in elefantegrass (pennisetum purpureum schum.), under continuous grazing associed with different sources supplementation: 0.3; 0.7; 1.1 and 1.5% of live weight day-1 (lw). thirty two charolais (c), nellore (n), 5/8 cn e 5/8 nc steers calves with na average age of one hundred twenty day, with average live weight of 98.5kg. the supplementation period was 84 days, divided in four periods of the 21 days. the forage mass of the pasture of elefantegrass presented average values of dry matter 20.44% (dm), crude protein 10.67% (cp) e 7.006.0kg de dm ha-1 during experimental period. the proportion of green leaf matter was of 22.62% representation an green leaf dry total of 1.650.8kg de dm ha-1. no significant interaction was observed between sources supplementation and evaluation period for average weight gain (adg). observed what the adg was of 0.365 kg, no obtained significant difference between the sources, with adg of 0.279, 0.380, 0.338 e 0.466kg day-1 for 0.3, 0.7, 1.1 e 1.5% do lw, respectively. in the analysis of the periods of supplementation, the gmd was bigger (p<.05) in the third period (0.545kg day-1) and minor (p<.05) in the fourth period (0.145kg day-1) comparatively to the first (0.342kg day-1) and to the second (0.431kg day-1) periods.
Utiliza??o do farelo de soja centrifugado visando à produ??o do superprecoce
Neumann, Mikael;Restle, Jo?o;Souza, Alexandre Nunes Motta de;Brondani, Ivan Luis;
Ciência Rural , 2006, DOI: 10.1590/S0103-84782006000200035
Abstract: the experiment was conducted with the objective to evaluate the use of soybean meal centrifugeted (smc) as substitution for soybean meal (sm) in the concentrate fraction of the diet of confined steer calves, being tested the following treatments: t1 - 100% of sm; t2 - 66% of sm + 34% of smc; t3 - 34% of sm + 66% of smc e t4 - 100% of smc. thirty-six steers no castrated braford (5/8 hereford 3/8 nellore) calves with an age average of seven months and average live weight of 202kg, were used. the whole feedlot period was 168 days, divided in four periods of 42 days. the roughage:concentrate ratio was 60:40 for the first and second periods, 50:50 for the third period and 45:55 for the fourth period. no signification interaction was observed between substitution of level of the protein source and feedlot evaluation period for average daily dry matter intake (dmi), crude protein intake (cpi) and digestible energy intake (dei), respectively, expressed per animal (dmid, cpid and deid), per 100kg of live weight (dmip, cpip, deip) and per unit of metabolic weight (dmim, cpim and deim), for average daily weight gain (adg), feed conversion (fc) and crude protein efficiency (cpe). the use of soybean meal centrifugeted with protein source as substitution partial or total of soybean meal in concentrate fraction of the diet feedlot steer calves, for young beef cattle production, did not affect (p>.05) of average dry matter intake, daily weight gain, feed conversion and crude protein efficiency.
Efeitos do livre acesso de bezerros ao creep-feeding sobre os esempenhos produtivo e reprodutivo de vacas primíparas
Souza, Alexandre Nunes Motta de;Lobato, José Fernando Piva;Neumann, Mikael;
Revista Brasileira de Zootecnia , 2007, DOI: 10.1590/S1516-35982007000800025
Abstract: the research evaluated the effects of the creep-feeding on the productive and reproductive performance of the primiparous cows, maintained on improved natural pasture with ryegrass (lolium multiflorum lam.), white clover (trifolium repens lam.) and cornich?o (lotus corniculatus lam. cv. s?o gabriel). a completely randomized experimental design composed by four treatments according to 2 x 2 factorial arrangement (two sex: cows suckling male or female calves; two systems of feeding: cows suckling male or female with or without access creep-feeding, totalizing 16 experimental units. the primiparous cows of the creep-feeding system showed body weight and corporal condition, in the end of the experiment, higher in relation to the ones without creep-feeding system (412 kg and 3.94 versus 399 kg and 3.77, respectively). cows in the creep-feeding system showed average daily weight gain higher than the cows with calves without access to creep-feeding (0.549 vs. 0.449 kg/day). creep-feeding and the sex of calves did not influence the pregnancy rate of primiparous cows.
Utiliza o do farelo de soja centrifugado visando à produ o do superprecoce
Neumann Mikael,Restle Jo?o,Souza Alexandre Nunes Motta de,Brondani Ivan Luis
Ciência Rural , 2006,
Abstract: Este experimento teve por objetivo avaliar a utiliza o do farelo de soja centrifugado (FSC) como substituto ao farelo de soja (FS) na fra o concentrada da dieta de bezerros de corte em confinamento, sendo testados os seguintes tratamentos: T1 - 100% de FS; T2 - 66% de FS + 34% de FSC; T3 - 34% de FS + 66% de FSC; e T4 - 100% de FSC. Foram utilizados 36 bezerros machos da ra a Braford, com idade média de sete meses e peso vivo médio inicial de 202kg. O confinamento compreendeu 168 dias de avalia o, sendo dividido em quatro períodos de 42 dias cada. A rela o volumoso:concentrado foi de 60:40 para o 1degrees e 2degrees períodos, de 50:50 para o 3degrees período e de 45:55 para o 4degrees período. N o houve intera o (P>0,05) entre nível de substitui o da fonte protéica e período de avalia o em confinamento para os parametros relativos aos consumos diários de matéria seca (CMS), proteína bruta (CPB) e energia digestível (CED), respectivamente, expressos em kg animal-1 (CMSD e CPBD) ou Mcal/animal (CEDD), por 100kg de peso vivo (CMSP, CPBP e CEDP) e por unidade de tamanho metabólico (CMSM, CPBM e CEDM), ao ganho de peso médio diário (GMD) e a eficiência da transforma o da matéria seca consumida (CA) e da proteína bruta consumida (EPB) em ganho de peso. A utiliza o de farelo de soja centrifugado como fonte protéica em substitui o parcial ou integral ao farelo de soja na fra o concentrada da dieta alimentar de bezerros de corte, visando à produ o do superprecoce, n o comprometeu (P>0,05) o consumo de alimentos, o ganho de peso médio diário e a eficiência da transforma o da matéria seca consumida e da proteína bruta consumida em ganho de peso.
Características agron micas produtivas, qualidade e custo de produ o de forragem em pastagem de azevém (Lolium multiflorum Lam) fertilizada com dois tipos de adubo
Alves Filho Dari Celestino,Neumann Mikael,Restle Jo?o,Souza Alexandre Nunes Motta de
Ciência Rural , 2003,
Abstract: Um experimento foi conduzido, com o objetivo de avaliar o comportamento produtivo e qualitativo, bem como, o custo de produ o de forragem da pastagem de azevém comum, em pastejo contínuo, fertilizada com dois tipos de adubos: Organo-mineral (AOM) e Químico (AQ). O estabelecimento da pastagem foi em 24/04/1999, com semeadura a lan o e o nível de aduba o, em cobertura, foi de 300kg ha-1 do AOM na fórmula 06-08-08 ou do AQ na fórmula 10-18-20. N o houve intera o significativa entre os fertilizantes e período de avalia o para as variáveis estudadas. A fonte de nutrientes, para os valores médios, n o afetou significativamente o teor de matéria seca (MS) no resíduo (22,6 vs 22,2%), a taxa de acumula o diária (72,3 vs 63,3kg ha-1 de MS), a produ o total de forragem (7.518 vs 6.801kg ha-1 de MS), o teor de proteína bruta (12,8 vs 12,7%), a fibra em detergente neutro (57,4 vs 57,4%) e a fibra em detergente ácido (31,0 vs 32,3%), respectivamente, para o AOM e AQ. O custo total da pastagem foi de 225,90 e 253,50 R$ ha-1, e a fonte de nutrientes representou 37,6 e 44,4%, respectivamente, para o AOM e AQ. Para o custo de forragem produzida, os valores foram de 0,030 e 0,037 R$ kg-1 de MS para a pastagem fertilizada com AOM e AQ, respectivamente.
Características agron?micas produtivas, qualidade e custo de produ??o de forragem em pastagem de azevém (Lolium multiflorum Lam) fertilizada com dois tipos de adubo
Alves Filho, Dari Celestino;Neumann, Mikael;Restle, Jo?o;Souza, Alexandre Nunes Motta de;Peixoto, Luis Antero de Oliveira;
Ciência Rural , 2003, DOI: 10.1590/S0103-84782003000100023
Abstract: one experiment was conducted, with the purpose to evaluate the production, quality and the production cost of forage of ryegrass, in continuous grazing, fertilized with two types of fertilizer: organic-mineral (fom) and chemical (fc) applied as top dressing. the pasture was implanted in 04/24/1999, with top-seeding, and the level of fertilizer was300kg ha-1 of fom formula 06-08-08 or fc formula 10-18-20. no significant interaction between fertilizer and evaluation period was observed for the variables studied. the fertilizer sources did not affect the percentage of dry matter (dm) in the residue (22.6 vs 22.2%), the accumulation rate of dry matter (72.3 vs 63.2kg ha-1 of dm), the total forage production (7518 vs 6801 kg ha-1 of dm), the percentage of crude protein (12.8 vs 12.7%), the neutral detergent fiber (57.4 vs 57.4%) and acid detergent fiber (31.0 vs 32.3%), for fom and fc, respectively. the total cost of the pasture was of 225.90 and 253.50 r$ ha-1, where the fertilizer represented 37.6 and 44.4%, respectively, for fom and fc. the production cost of the pasture dm was 0.030 and 0.037 r$ kg-1, for fom and fc, respectively.
Desempenho de bezerros e bezerras de corte em pastagem de capim elefante (Pennisetum purpureum, Schum.) associado a diferentes níveis de suplementa??o
Neumann, Mikael;Restle, Jo?o;Alves Filho, Dari Celestino;Pellegrini, Luis Giovani de;Souza, Alexandre Nunes Motta de;Kuss, Fernando;
Ciência Rural , 2005, DOI: 10.1590/S0103-84782005000100025
Abstract: the experiment was conducted to evaluate, during the long-yearling, the performance of the steers and heifer calves in elefantegrass (pennisetum purpureum, schum.), under continuous grazing associated with different sources supplementation: 0.5; 0.75; 1.0 and 1.25% of live weight day-1 (lw). twenty charolais, nellore and their crossbreed steers and heifer calves with an average age of eighth days, respectively, average live weight of 134.5 and 122.1kg, were used. the supplementation period was 84 days, divided in four periods of the 21 days. the readiness dry matter of elefantegrass presented average values of dry matter (18.11%), crude protein (7.64%), neutral detergent fiber (71.01%) and acid detergent fiber (37.79%) during supplementation period. no significant interaction was observed between sources supplementation, animal type and evaluation period for average weight gain (adg). on the average, the adg of the steer calves (0.785kg day-1) were superior (p<.05) compared to heifer calves (0.676kg day-1). the evaluations via animal performance showed the inferiority (p<.05) of the source supplementation 0.5% of lw for adg (0.558kg day-1) compared to the supplementation sources 0.75% of lw (0.727kg day-1), 1.0% of lw (0.786kg day-1) and 1.25% of lw (0.851kg day-1).
Productivity and reproductive performance of grazing beef heifers bred at 18 months of age
Souza, Alexandre Nunes Motta de;Rocha, Marta Gomes da;Roso, Dalton;P?tter, Luciana;Rosa, Aline Tatiane Nunes da;Ilha, Gustavo Freitas;Confortin, Anna Carolina Cerato;
Revista Brasileira de Zootecnia , 2012, DOI: 10.1590/S1516-35982012000200011
Abstract: the experiment was carried out to evaluate the performance and body development of beef heifers reared from 15 to 18 months of age on pearl millet (pennisetum americanum), alexandergrass pasture (urochloa plantaginea) or native pasture invaded by annoni-2 grass (eragrostis plana nees). the experimental design was completely randomized following a repeated measure arrangement, with three treatments and two replications. the grazing method was continuous with variable stocking rate in order to maintain the sward height at 40 cm. masses of leaf, stem and dead material, crude protein and neutral detergent fiber were similar between pearl millet and alexandergrass. average daily gain, stocking rate, live weight gain per hectare, body weight, body condition score, weight-to-height ratio and reproductive tract score of the heifers kept on annual summer pastures (pearl millet or alexandergrass) were superior, compared with the heifers on annoni-2 grass pasture.
Manipula??o da altura de corte da planta de milho (Zea mays, L.) para ensilagem visando a produ??o do novilho superprecoce
Restle, Jo?o;Neumann, Mikael;Brondani, Ivan Luiz;Pascoal, Leonir Luiz;Silva, José Henrique Souza da;Pellegrini, Luiz Giovani de;Souza, Alexandre Nunes Motta de;
Revista Brasileira de Zootecnia , 2002, DOI: 10.1590/S1516-35982002000500021
Abstract: the experiment was conducted with the objective to evaluate the performance of feedlot finished calves, fed with silages of ag-5011 corn hybrid harvested with different cutting height: low cut (20 cm) and high cut (42 cm). twelve braford calves with an average age of seven months and average live weight of 209 kg, were used. the feedlot period was 126 days, divided in two periods of the 63 days. the roughage:concentrate ratio was 60:40 and 50:50 for the first and second periods, respectively. the high cut silage showed higher ivomd (66.67 vs 58.60%) and lower ndf (41.47 vs 47.80%). significant interaction was observed between cutting height and evaluation period for dry matter intake (dmi) expressed per 100 kg of live weight and per unit of metabolic weight, digestible energy intake (dei), weight gain (adg), feed conversion (fc) and energy efficiency (ee). animals fed with the high cut silage during the first period presented higher adg (1.352 vs 1.198 kg) and better fc (4.82 vs 5.39 kg of dm/kg lw) than animals fed with the low cut silage. however, with the reduction of the roughage:concentrate ratio to 50:50 during the second period, the adg (1.228 vs 1.336 kg) and fc (6.43 vs 6.34 kg of dm/kg lw) were similar. slaughter and cold carcass weight, dressing percentage and subcutaneous fat thickness were similar, being, respectively, 371.8 kg; 195.3 kg; 52.46%; and 5.7 mm for the higher cut and 368.2 kg; 195.7 kg; 53.08%; and 3.7 mm for the lower cut.
Efeito do Grupo Genético e da Heterose na Composi??o Física e nas Características Qualitativas da Carca?a e da Carne de Vacas de Descarte Terminadas em Confinamento
Restle, Jo?o;Faturi, Cristian;Bernardes, Régis Augusto Carvalho;Alves Filho, Dari Celestino;Menezes, Luis Fernando Glasenapp de;Souza, Alexandre Nunes Motta de;Carrilho, Charles de Oliveira;
Revista Brasileira de Zootecnia , 2002, DOI: 10.1590/S1516-35982002000600008
Abstract: carcass physical composition and meat qualitative characteristics of cull cows from two breeding systems, straightbreds (charolais and nellore) and crossbreds f1 1/2 charolais-nellore and 1/2 nellore-charolais, were evaluated. the cows were feedlot finished during 80 days and fed with 65% roughage (sorghum silage) and 35% concentrate, in dry matter basis. charolais cows showed carcass with higher muscle (65.2 vs 58.8%) and bone (15.36 vs 13.7%) percentages, higher muscle (166.5 vs 139.61 kg) and bone (38.84 vs 32.34 kg) production than nellore cows. meat from charolais cows also exhibited better color (3.75 vs 3.14), tenderness (6.22 vs 5.34) and juiciness (6.16 vs 5.56). nellore cows showed higher fat percentage (27.95 vs 19.85%), total fat production (66.7 vs 51.2 kg) and higher meat thawing losses (6.15 vs 4.18%). crossbreds f1 females were superior to the straightbreds for fat percentage (26.74 vs 23.9%), total fat production (72.79 vs 58.95 kg), however, showed lower muscle percentage in the carcass (59.59 vs 62.02%), being the heterosis values 11.88, 23.48 and ?3.92%, respectively. meat qualitative characteristics were not affected by the breeding system.
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