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| Registros recuperados: 67 | |
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| Oviedo-Rondón,Edgar O.. |
| The broiler industry produces efficiently animal protein, but generates residues with high contents of N, P, K, trace minerals, and high bacterial charge. The rapid microbial decomposition of these residues cause ammonia volatilization, nuisance odor, fine particulate matter, and attract insects and rodents. This presentation will discuss the more effective methods to utilize these resources and minimize potential environmental impact. These procedures include planning, personnel training, zoning of areas used to dispose the final residues in crop lands, farm isolation, precision nutrition, litter and house management practices, and appropriate mortality disposal. Broiler litter has been used for animal feeding and power generation. Additionally, new... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental impact; Residues; Broilers; Ammonia; Odor. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982008001300028 |
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| Bezerra,Higor Fábio Carvalho; Oliveira,Juliana Silva de; Santos,Edson Mauro; Queiroz,Augusto César de; Mantovani,Hilário Cuquetto; Pinho,Ricardo Martins Araujo; Oliveira Junior,Jurandir Queiroz de; Costa,Elizabete Cristina Batista da. |
| The objective of this research was to evaluate the effect of whey fermented by Enterococus faecium in consortium with Veilonella parvula in vitro on ruminal microorganisms in different substrates, with or without monensin. The first experiment was carried out in a completely randomized design, in a 6 × 3 factorial arrangement (six substrates × three whey levels) with two replicates. In experiment two, a 2 × 3 × 4 factorial arrangement (with and without monensin, three foods and four levels of fermented whey) was used, in a randomized design with four replicates, totaling 24 treatments. There was no interaction among the wheys and the substrates in the variable for pectin, starch, and carboxymethyl cellulose. There was a greater growth of amylolytic and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ammonia; Fermentation; Microbial protein; Monensin; Rumen; Ruminal pH. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000500259 |
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| Maia,Michelle de Oliveira; Susin,Ivanete; Ferreira,Evandro Maia; Nolli,Cristine Paduan; Gentil,Renato Shinkai; Pires,Alexandre Vaz; Mourão,Gerson Barreto. |
| The objective in this experiment was to determine the effects of feeding diets with canola, sunflower or castor oils on intake, nutrient apparent digestibility and ruminal constituents of crossbred Dorper × Santa Inês sheep. Four rumen-cannulated animals of 90.2±11.4 kg average body weight were assigned to a 4 × 4 latin square. Animals remained individually in cages for the metabolism assay and were fed diets containing roughage at 500 g/kg and concentrate based on ground corn and soybean meal also at 500 g/kg. No oil was added to the control diet, whereas the others had canola, sunflower or castor oils at 30 g/kg (DM basis). There was no difference for the intake of DM and nutrients, except for ether extract, which was greater when animals received oil.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ammonia; Lipids; Metabolism; Short-chain fatty acids. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001100008 |
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| Marques,Raquel Ornelas; Gonçalves,Heraldo Cesar; Meirelles,Paulo Roberto de Lima; Brito,Evelyn Prestes; Gomes,Helen Fernanda Barros; Oliveira,Giuliana Micai de. |
| ABSTRACT Pasture-based production systems and alternative foods can be used to reduce goat milk production costs by around 20%.The objective of this study was to examine the effect of substituting the corn and soybean meal of the concentrate with cassava chips and alfalfa, respectively, on the feed intake, fermentation, and rumen degradability parameters of adult, dry, empty, rumen-cannulated Saanen goats reared in a feedlot. The experiment was conducted as a Latin square design in which the following diets were tested: ground corn and soybean meal; cassava chips and soybean meal; ground corn and alfalfa; and cassava chips and alfalfa. The following variables were evaluated: feed intake, rumen parameters, short-chain fatty acid (SCFA) production, and feed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ammonia; Degradability; Rumen pH; Short-chain fatty acids. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000200417 |
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| Núñez,Pedro; Demanet,Rolando; Matus,Francisco; Mora,Maria de la Luz. |
| The grazing management of grassland has a direct effect on nitrogen (N) recycling. This is an important reason why management has become an alternative to improve the grassland production and quality, in turn to make it more suitable for the environment. However, the livestock system intensification induces changes in the natural dynamics of the N cycle, accelerating gas emmisions (e.g. ammonia, NH3 and nitrous oxide, N(2)0) and leaching losses from soil under grazing. When the amount of N in the environment increases, there is an impact on smog episodes, global warming, stratospheric ozone depletion, acid rain and eutrophication of fresh water. There are different techniques to evaluate the gases emitted from the soil. This klonowledge is useful to design... |
| Tipo: Journal article |
Palavras-chave: Ammonia; Grazing; Management; Nitrogen; Nitrous oxide; Livestock. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912007000300006 |
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| Rebouças, Vanessa Tomaz; Lima, Francisco Roberto dos Santos; Cavalcante, Davi de Holanda; Sá, Marcelo Vinícius do Carmo e. |
| The present work aimed at determining the tolerance of Nile tilapia juveniles to highly acidic rearing waters and the effects of water acidity on the quality of tank effluents. The experimental design consisted of four treatments with different water pH values (4.12 ± 0.84; 5.13 ± 0.74; 6.14 ± 0.64 and 8.06 ± 0.48), with five replicates each. No exchange of water was performed throughout the study, only water replenishment to maintain the initial level. Variables of water quality, soil, growth performance, metabolism and effluents were monitored for eight weeks. Despite the lower total ammonia nitrogen (TAN) concentration in the pH 8 tanks, their levels of non-ionized ammonia (NH3) were the highest ones. At the end, the lowest body weight of fish was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Piscicultura; Tilápia aquaculture; Oreochromis niloticus; Acidophilic fish; Ammonia; PH. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/27031 |
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| Bittencourt, Fábio; Damasceno, Danielle Zanerato; Lui, Tatiane Andressa; Signor, Altevir; Sanches, Eduardo Antônio; Neu, Dacley Hertes. |
| Transportation of live fish is routinely done in aquaculture; therefore, the aim of this study was to analyze the water quality and survival rate of Rhamdia quelen fry (2.55±0.44 g) following 4, 8 and 12h of simulated transportation, at stock densities of 30 and 60 fry 5 L-1 and temperatures 15, 20 and 25oC. Dissolved oxygen, pH, electrical conductivity, total ammonia, nitrite, nitrate, turbidity, total alkalinity and survival were analyzed. Temperature and time had a significant influence on ammonia, pH, electrical conductivity, and dissolved oxygen levels, and fish died after 12 hours of transportation simulation when kept at 20 and 25ºC. The density directly affected the water quality parameters, such as the increase in electrical conductivity and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências Agrárias; Recursos Pesqueiros e Engenharia de Pesca; Aquicultura aquaculture; Ammonia; Loading densities; Management; Mortality.. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/37285 |
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| Zeoula, Lúcia Maria; Universidade Estadual de Maringá; Beleze, Juliano Ricardo Fontanini; Universidade Estadual de Maringá; Maeda, Emilyn Midori; Universidade Estadual de Maringá; Simioni, Fabiano Luís; Universidade Estadual de Maringá; Geron, Luiz Juliano Valério; Universidade Estadual de Maringá; Rigolon, Luiz Paulo; Universidade Estadual de Maringá. |
| Objetivou-se avaliar o uso da monensina sódica (Rumensin®) e da levedura viva (Saccharomyces cerevisiae - Beef - sacc®) sobre a concentração de ácidos graxos de cadeia curta (AGCC), amônia e pH ruminal, e eficiência microbiana em bubalinos e bovinos, alimentados com dietas com 50% de concentrado. Foram utilizados três búfalos e três bovinos portadores de cânulas no rúmen e no duodeno, distribuídos em dois quadrados Latinos, com arranjo fatorial 3 x 2. As concentrações de AGCC, amônia e o pH ruminal foram determinados a cada 2h. Os fluxos de digesta e proteína microbiana no duodeno foram determinados, respectivamente, por meio dos indicadores cinza insolúvel em ácido e as bases purinas. Não houve efeito dos aditivos e das espécies para a... |
| Tipo: Pesquisa aplicada |
Palavras-chave: Ciências Agrárias Zootecnia Ácidos graxos voláteis; Amônia; Ionóforo; Saccharomyces cerevisiae short chain fatty acids; Ammonia; Ionophore; Saccharomyces cerevisiae. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/11264 |
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| Rune R. Andreasen; Anders L Riis; Knud Mortense. |
| In this study, we tested the performance and perspectives of four full-scale biotrickling filters based on Leca® (Light Expanded Clay Aggregates), a mechanically stable, non-degradable filter media, known to absorb odorous compounds such as H2S and methanethiol. The four filters varied in: filter thickness, carrying media, and the presence of dust filters. Biological Leca® filters were found to be capable of reducing NH3, H2S and odour by up to 96%, 80% and 78%, respectively. Clogging was observed to occur after approximately 100 days, but the installation of a dust filter successfully eliminated this problem. |
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Palavras-chave: Biotrickling filters; Odour; Ammonia; Full-scale; Pig stable exhaust air. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3314 |
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| Tabase, Raphael Kubeba. |
| The study aims to develop a test platform (TP) compartment that could mimic diurnal variations in indoor climate and NH3 emission in a real pig compartment and to compare diurnal indoor climate and NH3 production between two TP compartments and a real compartment. The objectives were achieved by using a real and TP compartment followed by an ad hoc test that used two TP compartments and another real compartment. The TP had two compartments equipped with mock-up pigs as heat source and automatic urea solution spraying installation to mimic pig urination at the pen floor. The study evaluated indoor climate and NH3 production in a 4-day comparative test between a TP and a real compartment followed by a 3-day comparative test between two TP compartments and a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ammonia; Emission; Modeling; Pig housing; Test platform; Ventilation; Belgium. |
| Ano: 2019 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5216 |
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| Andreasen, Rune R.; Riis, Anders L; Mortense, Knud. |
| In this study, we tested the performance and perspectives of four full-scale biotrickling filters based on Leca® (Light Expanded Clay Aggregates), a mechanically stable, non-degradable filter media, known to absorb odorous compounds such as H2S and methanethiol. The four filters varied in: filter thickness, carrying media, and the presence of dust filters. Biological Leca® filters were found to be capable of reducing NH3, H2S and odour by up to 96%, 80% and 78%, respectively. Clogging was observed to occur after approximately 100 days, but the installation of a dust filter successfully eliminated this problem. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biotrickling filters; Odour; Ammonia; Full-scale; Pig stable exhaust air. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3314 |
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| LIMA,HELLEN L.; GOES,RAFAEL H.T.B. DE; CERILO,SARA L.N.; OLIVEIRA,EUCLIDES R. DE; GRESSLER,MARIA G.M.; BRABES,KELLY C.S.. |
| ABSTRACTTo evaluate of the sunflower crushed in nutritional parameters in steers, supplemented at pasture, we used four steers in 4×4 Latin square design. The supplements were provided in 6 g-kg of body weight-animal-day, consisting of sunflower crushed, corn, soybean meal and mineral. All the supplements was isonitrogenous and soybean meal was replaced in 0, 20, 40, and 60% for sunflower crushed. The determination of ruminal pH and ammonia was at 0, 2, 4, 6 and 8 h. after feeding and for short-chain fatty acids it was collected at 0 and 6 h. post-feeding. The dry matter intake was not affected (P>0.05) by inclusion of sunflower crushed (mean=6.59 kg-day). There was no significant effect (P>0.05) for pH for the inclusion of sunflower crushed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fatty acid; Ammonia; PH; By-product; Supplementation. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401513 |
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| Lima,L.S.; Alcalde,C.R.; Gomes,L.C.; Souza,R.; Rigolon,L.P.; Nakamura,C.V.. |
| Five castrated and ruminally cannulated Saanen goats (±48.19kg) were used to evaluate intake, digestibility and rumen fermentation parameters of diets with inactive dry yeast as a soybean meal substitute (0, 25, 50, 75 and 100%). Goats were randomly assigned to a 5×5 (five levels of dry yeast x five periods) Latin square design. Diets were composed of corn silage (40%), ground corn, soybean meal and/or dry yeast and mineral supplement. The intake and digestibility of DM, OM, CP, NDF and TC were not influenced by the treatments. However, EE intake showed negative linear effect. The TDN content did not change with the inclusion of dry yeast in the diets. The pH, N-NH3 concentration and rumen short-chain fatty acids content did not differ among diets. Rumen... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ammonia; Digestibility; Goats; Saccharomyces cerevisiae. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000100021 |
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| Boaretto,Antonio Enedi; Spolidorio,Eduardo Scarpari; Freitas,José Guilherme de; Trivelin,Paulo Cesar Ocheuze; Muraoka,Takashi; Cantarella,Heitor. |
| The wheat crop in São Paulo State, Brazil, is fertilized with N, P and K. The rate of applied N (0 to 120 kg.ha-1) depends on the previous grown crop and the irrigation possibility. The response of wheat to rates and time of N application and the fate of N applied to irrigated wheat were studied during two years. Residual N recovery by soybean grown after the wheat was also studied. The maximum grain productivity was obtained with 92 kg.ha-1 of N. The efficiency of 15N-urea utilization ranged from 52% to 85%. The main loss of applied 15N, 5% to 12% occurred as ammonia volatilized from urea applied on soil surface. The N loss by leaching even at the N rate of 135 kg.ha-1, was less than 1% of applied 15N, due to the low amount of rainfall during the wheat... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nitrogen fertilization; Efficiency; Ammonia; Volatilization. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052004000200011 |
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| Registros recuperados: 67 | |
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