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| Registros recuperados: 205 | |
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| Damasceno,Flávio A.; Oliveira,Carlos E. A.; Saraz,Jairo A. O.; Schiassi,Leonardo; Oliveira,Jofran L. de. |
| ABSTRACT The current heating system for piglets in the farrowing usually uses incandescent lamps and, in some cases, heated floors with electric resistances, which in most cases generates a high energy cost. Thus, the implantation of systems that use renewable energies in the heating of piglets can allow the thermal comfort of the animals without reducing the productive development. The objective of this research was to evaluate a computer model in Computational Fluid Dynamics (CFD), which predicts surface temperature in the heating system of a farrowing house. The study was conducted during the summer season on the swine sector of Federal University of Lavras, Brazil. For this study, a prototype solar heater using alternative materials (ASWH) was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Swine; Computational modelling; Simulation. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000400471 |
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| Cordeiro,Alexandra F. da S.; Nääs,Irenilza de A.; Baracho,Marta dos S.; Jacob,Flávia G.; Moura,Daniella J. de. |
| ABSTRACT Pain is considered a condition that most affect the welfare of animals and its measurement is seen as a difficult task. This research aimed to determine the level of pain in pigs by their vocalization. It was recorded the vocalizations of 20 male piglets under normal circumstances (I), marking by Australian method (II), tail trimming management (III), and castration (IV). A unidirectional microphone and a digital recorder were used to record the sound signals. The results suggested that Pitch frequency (Hz), the maximum amplitude (Pa), and intensity (dB) increased from pain-free pigs to the marking procedure; and from marking to both tail trimming and castration The tail trimming and castration vocal response did not differ. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stress; Caudectomy; Castration; Marking; Swine; Sound signals. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000400486 |
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| Inoue,Keles R. A.; Souza,Cecília De F.; Matos,Antonio T.; Sousa,Marilú S.; Vieira,Maria De F. A.. |
| ABSTRACT Swine wastewater have high pollution load, requiring treatment before its disposal into the environment. Methane (CH4) potentially emitted for such waste is considered 21 times more polluting than Carbon dioxide (CO2), and the nitrous oxide (N2O) is considered 310 times. In this way, projects of the Clean Development Mechanism (CDM) and energy use related to the CH4 are worldwide diffused. It was evaluated the potential greenhouse gas emissions in the influent and effluent from digesters and stabilization ponds used to treat the swine wastewaters in two commercial farms operating in full cycle, located in the municipality of Oratorios-MG, Brazil. Using the methodology “AM0006” to estimate the average potential of greenhouse gases, it was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Greenhouse gases; Air pollution; Swine; Waste management. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000601198 |
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| Faria,Danielle Assis de; Guimarães,Simone Eliza Facioni; Lopes,Paulo Sávio; Pires,Aldrin Vieira; Paiva,Samuel Rezende; Sollero,Bruna Pena; Wenceslau,Amauri Arias. |
| The association between G316A growth hormone polymorphism and quantitative traits was investigated in an F2 population of pigs. Association analyses were performed using a statistical model that included genotype, sex, batch and sex by genotype interaction as fixed effects and sire as random effect. The polymorphism was associated with the number of right teats (p = 0.03), heart weight (p = 0.04), lung weight (p = 0.05), carcass length determined by the Brazilian carcass classification method (p = 0.04), picnic shoulder weight (p = 0.07), jowl weight (p = 0.01), pH 24 h after slaughtering (p = 0.03) and drip loss (p = 0.01). Interaction between genotype and sex was observed for six performance traits. The additive effect was significant (p < 0.10) for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Candidate genes; Divergent cross; Molecular marker; Sex x genotype interaction; Swine. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000400010 |
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| CORREA, J. C.; GROHSKOPF, M. A.; NICOLOSO, R. da S.; HIGARASHI, M. M.; OLIVEIRA, P. A. V. de. |
| Na criação tecnificada de suínos, muita preocupação tem sido atribuída ao destino final dos resíduos gerados por este sistema, principalmente na geração de fertilizantes orgânicos e sua aplicação no ambiente. No ano de 2010, foram abatidos, aproximadamente, 36,8 milhões de cabeças e espera-se que até o ano de 2020 este número aumente, com incremento na produção de 24% (MAPA, 2010). Assim, a demanda para o aproveitamento dos resíduos gerados na criação de suínos será cada vez maior, fazendo com que a pesquisa necessite desenvolver recursos tecnológicos que equalizem a relação produção/qualidade ambiental. |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Manejo de dejetos.; Manejo do solo; Fertilizante; Adubo; Tecnologia agrícola; Meio ambiente; Compostagem; Suinocultura.; Soil management; Fertilizer application; Application technology; Fertilizers; Environment; Waste treatment; Animal wastes; Swine; Composting. |
| Ano: 2015 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1031918 |
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| Registros recuperados: 205 | |
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