Gledson L. P. de Almeida
Universidade Federal Rural de Pernambuco
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Featured researches published by Gledson L. P. de Almeida.
Revista Brasileira de Engenharia Agricola e Ambiental | 2009
Aérica Cirqueira Nazareno; Héliton Pandorfi; Gledson L. P. de Almeida; Pedro R. Giongo; Elvira M. R. Pedrosa; Cristiane Guiselini
Esta pesquisa foi conduzida com o objetivo de avaliar tres sistemas de criacao para frangos de corte industrial, visando caracterizar o ambiente termico e o desempenho animal. O experimento foi realizado no decorrer de 42 dias, desenvolvido em modulos de producao, divididos em 15 boxes com 10 aves por box, submetidas a tres sistemas de criacao: semi-confinado com 3 m2 por ave de area de piquete (SC 3), semi-confinado com 6 m2 por ave de area de piquete (SC 6) e confinamento total (CONF). O delineamento experimental foi inteiramente casualizado (DIC) em parcelas subdivididas e medias comparadas pelo teste Tukey (P < 0,05). As variaveis meteorologicas e os indices de conforto apontam o sistema de criacao SC 3 como o que permitiu melhor condicionamento termico natural as aves, apresentando valores medios da ordem de 25,4 °C, 69,9 kJ kg-1 e 75,7 para temperatura de bulbo seco (Tbs), entalpia (h) e indice de temperatura de globo e umidade (ITGU), respectivamente. Os parâmetros fisiologicos frequencia respiratoria (mov min-1) e temperatura cloacal (°C) indicaram valores medios mais adequados nas aves submetidas ao sistema de criacao SC 3. Os sistemas de criacao promoveram alteracoes no desempenho das aves para consumo de racao (CR) e peso corporal (PC) nos sistemas SC 3 e CONF, comparativamente ao SC 6, que apresentou prejuizo no desempenho.
Revista Brasileira de Engenharia Agricola e Ambiental | 2010
Gledson L. P. de Almeida; Héliton Pandorfi; Cristiane Guiselini; Gleidiana A. P. de Almeida; Waldirene B. Morril
The objective of this study was to evaluate the effects of cooling of pre-milking cows on production, physiology, thermal conditioning and the cost-benefit of the Adiabatic Evaporative Cooling System (AECS). Sixteen cows were used with an average daily milk production of 18 kg, distributed in 4 x 4 Latin square design. The Tukey test (P<0.05) was utilized for comparison of means. The treatments (0, 10, 20 and 30 min.) consisted of exposure of pre-milking cows to the AECS. The dry bulb temperature (DBT, oC) and relative humidity (RH, %) were recorded every minute, which allowed the determination of the efficiency of the AECS through the temperature and humidity Index (THI) and enthalpy (h). The respiratory rate (RR), rectal temperature (RT) and temperature of the coat (TC) were measured before and after cooling. The 30 min. treatment kept the environmental variables and the comfort indexes within recommended limits. The physiological variables (RR, RT and TC) were lower in the 30 min treatment and reflected positively on milk production, which increased 4.35% compared to the control treatment (0 min). The investment was profitable having a 58 day return on investment and a monthly revenue increase of R
Revista Brasileira de Engenharia Agricola e Ambiental | 2010
Marcos José Batista dos Santos; Héliton Pandorfi; Gledson L. P. de Almeida; Waldirene B. Morril; Elvira M. R. Pedrosa; Cristiane Guiselini
1,266.84.
Revista Brasileira de Saúde e Produção Animal | 2012
Héliton Pandorfi; Gledson L. P. de Almeida; Cristiane Guiselini
Conduziu-se esta pesquisa com o objetivo de avaliar o efeito do enriquecimento ambiental em sistema de producao para frangos de corte caipira, determinando a influencia dos elementos meteorologicos e seu reflexo nos aspectos comportamentais das aves. O experimento foi realizado em 87 dias, na Estacao Experimental de Pequenos Animais da Universidade Federal Rural de Pernambuco, desenvolvido em quatro modulos de producao e cada modulo dividido em quatro boxes com 10 aves por box, totalizando 160 aves, submetidas aos modulos de producao com acesso a piquete, acesso a piquete com poleiro, acesso a piquete com sombreamento artificial e acesso a piquete com poleiro e sombreamento artificial. O delineamento experimental foi inteiramente casualizado em parcelas subdivididas e medias comparadas pelo teste Tukey. O modulo de producao com acesso a piquete com poleiro e sombreamento artificial foi aquele que permitiu melhor condicionamento termico as aves, apresentando valor medio para entalpia de 75,95 kJ kg-1, alem de promover melhor oportunidade de expressar seus comportamentos naturais e de explorar o ambiente externo ao modulo de producao, potencializando o bem-estar animal.
Revista Brasileira de Engenharia Agricola e Ambiental | 2012
Irenilson M. da Silva; Héliton Pandorfi; Gledson L. P. de Almeida; Cristiane Guiselini; Anildo M. Caldas; Arthur L. Jacob
This study was conducted with the objective of identifying the insertion of Precision Animal Production in the current pig production model and its potential to the improvement of the production system, based on engineering principles processes, as well as animals physiological, physical and biological parameters in the text the technological principles that serve as basis for precision technology and the key challenges facing the development as well as presenting several concrete examples of its international practice and in the country were addressed. It is expected, through the dissemination of interactive and dynamic systems, to cite some applications, such as animal identification, behavioral aspects, physical environment animal facilities and emissions of gases, with emphasis on improvement in performance indexes within the rules of animal welfare.
Revista Brasileira de Engenharia Agricola e Ambiental | 2011
Gledson L. P. de Almeida; Héliton Pandorfi; Cristiane Guiselini; Hugo M. Henrique; Gleidiana A. P. de Almeida
The objective of this study was to characterize the spatial variability of air temperature in pre-milking room for different operation times of the automated adiabatic evaporative cooling system. The air temperature was monitored at 35 points, in regular intervals of 1 m, as a grid, to study the spatial variability and construction of kriging maps. Different times of exposure of the animals to the cooling system in the waiting room (20, 30, 40 min and control - 0 min) were considered. Through the results, it was observed that use of geostatistics enabled to define areas with different spatial variability for temperature, identifying specific areas in the pre-milking room that showed values above the recommended levels for the thermal comfort. The cooling system ensured the better thermal condition with the 40 min exposure, obtaining on average temperature within the thermal comfort condition for lactating cows.
Revista Brasileira de Engenharia Agricola e Ambiental | 2013
Gledson L. P. de Almeida; Héliton Pandorfi; Severino Benone Paes Barbosa; Danilo Florentino Pereira; Cristiane Guiselini; Gleidiana A. P. de Almeida
The objective of this research was to evaluate different times of exposure of animals to cooling in the waiting pen on the comfort index, physiological parameters and milk production of girolando 7/8 cows. As treatments, four times of exposure of animals to adiabatic evaporative cooling system (AECS), 0, 10, 20 and 30 min were considered. The experiment was conducted during the summer season and lasted 56 days. Sixteen cows were used with an average daily milk production of 18 kg, distributed in 4 x 4 Latin square design. The dry bulb temperature (DBT) and relative humidity (RH) were recorded every minute, which allowed to determine the efficiency of the AECS through the Temperature and Humidity Index (THI) and enthalpy (h). The respiratory rate (RR), rectal temperature (RT) and temperature of the coat (TC) were measured before and after cooling. The 30 min treatment kept the environmental variables and the comfort indexes within recommended limits. The physiological variables (RR, RT and TC) were lower in the 30 min treatment and reflected positively on milk production, which increased 4.4% compared to the 0 min treatment.
Revista Brasileira de Engenharia Agricola e Ambiental | 2012
Waldirene B. B Morrill; Mario M. Rolim; Egídio Bezerra Neto; Elvira M. R. Pedrosa; Veronildo S. Oliveira; Gledson L. P. de Almeida
Objetivou-se, com este trabalho, avaliar o tempo de exposicao dos animais ao sistema de resfriamento adiabatico evaporativo no curral de espera sobre as variaveis meteorologicas (temperatura e umidade relativa do ar), comportamento animal, producao e aspectos qualitativos do leite de vacas Girolando, utilizando-se 16 vacas multiparas de composicao genetica 7/8 Holandes-Gir em lactacao, com producao media de 18 kg de leite animal-1 d-1. O delineamento experimental utilizado foi o quadrado latino 4 a - 4. O experimento teve duracao de 56 dias, realizado durante o periodo de verao. Os tratamentos corresponderam aos intervalos de 10, 20 e 30 min de exposicao a climatizacao e controle, sendo que o tempo de 30 min de exposicao ao sistema possibilitou condicionamento termico na segunda ordenha (turno da tarde), proporcionando aumento na producao de leite na ordenha seguinte de 0,640 kg animal-1. Verificou-se maior percentual de tempo despendido com a ingestao de alimentos e ruminacao (17,31 e 30,19%) no tratamento 30 min, comparativamente ao controle (15,50 e 27,37%), respectivamente. Nao se verificou efeito significativo na composicao do leite, entre os tratamentos.
Engenharia Agricola | 2011
Irenilson M. da Silva; Héliton Pandorfi; Gledson L. P. de Almeida; Cristiane Guiselini; Hugo M. Henrique
Este estudo objetivou avaliar o desenvolvimento e teores de macronutrientes presentes no milheto e no sorgo Sudao, em resposta a aplicacao de doses de soro de leite ao solo. O experimento foi conduzido com solo em vasos com capacidade de 8 dm3 em ambiente protegido utilizando-se delineamento inteiramente casualizado em arranjo fatorial 2 (aplicacao unica e parcelada) x 5 (doses de soro) com quatro repeticoes. As doses foram equivalentes a: 0, 167, 333, 667 e 1000 m3 ha-1 de soro de leite, determinadas com base no teor de K. O soro foi aplicado em dose unica, 10 dias antes da semeadura e em dose parcelada (50% 10 dias antes da semeadura e 50% 20 dias apos a emergencia das plantas). Apos 42 dias realizou-se a colheita e se determinaram altura e massa seca da parte aerea. A trituracao da massa seca foi realizada para o preparo de extratos, com vista as determinacoes analiticas dos nutrientes, P, Na, K, Ca e Mg. Os resultados mostraram que para producao de massa seca no manejo de aplicacao dose unica ocorreu, a partir da dose equivalente a 667 m3 ha-1 de soro de leite, diminuicao na producao, em ambas as culturas, enquanto para a aplicacao parcelada a reducao se deu a partir da dose 167 m3 ha-1.
Revista Brasileira de Engenharia Agricola e Ambiental | 2014
Janice Maria Coelho Barnabé; Héliton Pandorfi; Gledson L. P. de Almeida; Cristiane Guiselini; Arthur L. Jacob
The aim of this paper was to evaluate the automated acclimatization effects during pre-milking of cows on thermal conditioning, physiology, milk production and cost-benefit of the automated adiabatic evaporative cooling system (AECS). The treatments 20; 30; 40 min and control consisted of exposure time of pre-milking cows to the automated AECS. Sixteen cows were used with an average daily milk yield of 19 kg, distributed in a 4 x 4 Latin square design. The Tukeys test (P<0.05) was used to compare the means. The environmental variables, dry bulb temperature (DBT, oC) and relative humidity (RH, %), were recorded every minute, which allowed the determination of the system efficiency through the Temperature and Humidity Index (THI). The respiratory rate (RR), rectal temperature (RT) and temperature of the coat (TC) were measured before and after the acclimatization. The 40 min treatment kept the environmental variables and the comfort indexes within recommended limits. The physiological variables (RR, RT and TC) were lower in the 40 min treatment and reflected positively on milk production, which increased 3.66% compared to the control treatment. The system was profitable, having a 43 days return on investment and a monthly revenue increase of R