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| Registros recuperados: 4.506 | |
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| Aagaard-Hansen, J.; Larsen, C.E. Schou; Halberg, N.; Hjortsø, C.N.; Gausset, . Q.; Kabirizi, J.. |
| Conventional research approaches have lost considerable momentum after their astonishing achieve-ments during the green revolution. The negative side of focusing rigorously on production improve-ment was eminent around 1980 and led to considerations of environmental, gender and equity aspects - making agricultural development much more complex than previously. In the search for new ways of addressing the persisting problems of food insecurity and malnutrition, new ways should be explored. Based on the experiences from three international, African research projects, the article argues the case of participatory action research and cross-disciplinarity as some of the key elements in future animal science research in developing countries. The benefits are... |
| Tipo: Journal paper |
Palavras-chave: Social aspects; Animal husbandry. |
| Ano: 2007 |
URL: http://orgprints.org/15516/1/15516.pdf |
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| Abreu, Lucimar Santiago; Bellon, Stéphane; Alfio, Brandenburg; Ollivier, Guillame; Lamine, Claire; Darolt, Moacir Roberto; Aventurier, Pascal. |
| Neste artigo, exploramos a relação entre Agroecologia e Agricultura Orgânica. O debate na comunidade científica em alguns países e a análise das posições ou discursos de pesquisadores e artigos apontam para distintas combinações, trocas e interações entre a Agricultura Orgânica e Agroecologia. Nesse sentido, primeiramente, com base na revisão de literatura, mostramos distintas interações entre esses estilos de agricultura. Além disto, analisamos as controvérsias das agriculturas em foco, bem como apresentamos uma síntese de dois estudos de caso para ilustrar a aplicação prática de princípios da agroecologia, ava¬liando práticas e valores éticos, relacionando-as com as lógicas familiares ou patronais de funcionamento da produção. Concluímos que as relações... |
| Tipo: Journal paper |
Palavras-chave: Farming Systems; Crop husbandry; Social aspects. |
| Ano: 2012 |
URL: http://orgprints.org/24207/1/Abreu%2C%20L.%20S%3B%20Bello%2C%20S%3B%20Brandenburg%2C%20ARela%C3%A7%C3%B5es%20entre%20agricultura%20org%C3%A2nica%20e%20agroecologia_.pdf |
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| Abreu, Lucimar Santiago de; Lamine, Claire; Brandenburg, Alfio; Bellon, Stéphane; Mazarotto, Angelo A .V.de Sá. |
| Nos últimos anos tanto no Brasil, como na França o tema da agroecologia tem ganhado forte visibilidade na sociedade e ocupado espaços importantes em programas e ações de desenvolvimento rural, bem como, no mundo da pesquisa científica, ensino e no movimento social. Diante desse fato, o objetivo do nosso artigo é o de apresentar os primeiros resultados do projeto Capes-Cofecub1. Primeiramente, analisaremos numa perspectiva cruzada – da sociologia e das ciências agrárias -, a evolução e a dinâmica da agroecologia, indicando as principais ações em curso tendo em conta o processo de institucionalização e estruturação crescente da agroecologia no Brasil e na França. Em seguida, proporemos uma reflexão em torno da agroecologia e ética. |
| Tipo: Journal paper |
Palavras-chave: Farming Systems. |
| Ano: 2011 |
URL: http://orgprints.org/22671/1/Abreu_agroecologia.pdf |
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| Abreu, Lucimar Santiago de; Schwartz, F. F.. |
| A partir de análise da legislação brasileira vinculada ao BEA e de entrevistas realizadas com pesquisadores, legisladores e técnicos do MAPA, buscamos retraçar o ambiente técnico/jurídico que alicerça o BEA no Brasil. As entrevistas foram orientadas por um questionário aberto, realizadas no primeiro semestre de 2011. Consideramos que o BEA possa tornar se um conceito que alberga princípios agroecológicos, recomendáveis na implantação de sistemas de criação e manejos animais, que expressa valores éticos, ecológicos e economicamente justos. Os dados levantados sinalizam para a necessidade de uma maior discussão sobre o tema que ainda se mostra bastante incipiente no Brasil, em especial junto a consumidores. É fundamental para o avanço de BEA no Brasil, as... |
| Tipo: Journal paper |
Palavras-chave: Production systems; Animal husbandry. |
| Ano: 2011 |
URL: http://orgprints.org/22711/1/Schwartz_agroecologia.pdf |
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| Acharya, B.S.; Rasmussen, J.; Eriksen, J.. |
| Grasslands are potential carbon sinks to reduce unprecedented increase in atmospheric CO2. Effect of age (1 to 4-yr-old) and management (slurry, grazing multispecies mixture) of a grass phase mixed crop rotation on carbon sequestration and emissions upon cultivation was compared with 17-yr-old grassland and a pea field as reference. Aboveground and root biomass were determined and soils were incubated to study CO2 emissions after soil disturbance. Aboveground biomass was highest in 1-yr-old grassland with slurry application and lowest in 4-yr-old grassland without slurry application. Root biomass was highest in 4-yr-old grassland, but all 1 to 4-yr-old grasslands were in between the pea field (0.81±0.094 g kg-1 soil) and the 17-yr-old grassland (3.17±0.22... |
| Tipo: Journal paper |
Palavras-chave: Soil quality; Biodiversity and ecosystem services. |
| Ano: 2012 |
URL: http://orgprints.org/22041/7/22041.pdf |
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| Adamsen, Christina E.; Hansen, Mette L.; Møller, Jens K.S.; Skibsted, Leif H.. |
| Aqueous phosphate buffer extracts and acetone/water extracts of pigments from Parma ham were assessed as antioxidants by (1) electron spin resonance spectroscopy using a spin probing technique to evaluate their efficiencies as scavengers of free radicals, and (2) by electrochemical measurement of oxygen depletion rate in an aqueous methyl linoleate emulsion to evaluate their efficiencies as chain-breaking antioxidant, and using both methods, compared with the effect of apomyoglobin and nitrosylmyoglobin. Aqueous phosphate extracts and acetone/water extracts of Parma ham pigment both scavenged a semi-stable nitroxide radical (Fremy's salt), and both extracts reduced the rate of oxygen consumption for lipid peroxidation (initiated by metmyoglobin) very... |
| Tipo: Journal paper |
Palavras-chave: Processing; Packaging and transportation. |
| Ano: 2003 |
URL: http://orgprints.org/3259/1/2170201.pdf |
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| Adamsen, Christina E.; Møller, Jens K.S.; Hismani, Ramadan; Skibsted, Leif H.. |
| Lipophilic and hydrophilic extracts of the red pigments from Parma ham and nitrosylated pigment of dry-cured ham produced with nitrite salt were prepared with acetone/water (75/25 v/v %) solution and aqueous phosphate buffer, respectively. The spectral characteristics differed for both the lipophilic and the hydrophilic Parma ham pigment compared with the dry-cured ham produced with nitrite salt. The red lipophilic pigment(s) extractable from Parma ham was(were) found to be very stable towards thermal degradation in acetone/water (75/25 v/v %) solution for temperatures up to 70 °C in contrast to the lipophilic pigment(s) extractable from dry-cured ham produced with nitrite salt, which was(were) found to have an energy of activation of 99 kJ/mol for thermal... |
| Tipo: Journal paper |
Palavras-chave: Processing; Packaging and transportation. |
| Ano: 2004 |
URL: http://orgprints.org/3260/1/artikel.pdf |
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| Adamtey, Noah; Musyoka, Martha W.; Zundel, Christine; Cobo, Juan Guillermo; Karanja, Edward; Fiaboe, Komi K.M.; Muriuki, Anne; Mucheru-Muna, Monica; Vanlauwe, Bernard; Berset, Estelle; Messmer, Monika M.; Gattinger, Andreas; Bhullar, Gurbir S.; Cadisch, Georg; Fliessbach, Andreas; Mäder, Paul; Niggli, Urs; Forster, Dionys. |
| In 2007 two long-term trials were established in Kenya to contribute research-based evidence to the global debate on the productivity, economic viability and sustainability of different agricultural production systems. These trials compare conventional (Conv) and organic (Org) farming systems at high and low input levels at two locations, i.e. Chuka, with Humic Nitisols, high inherent soil fertility and rainfall, and Thika, with Rhodic Nitisols with low soil fertility and rainfall. The high input systems (High) represent commercial-scale, export-oriented production that uses the recommended amounts of fertilisers, pesticides and irrigation water to generate high yields, whilst the low input systems (Low) represent local smallholder practices, using... |
| Tipo: Journal paper |
Palavras-chave: Farming Systems Cereals; Pulses and oilseeds Africa. |
| Ano: 2016 |
URL: http://orgprints.org/30697/1/Adamtey-etal-2016-AGEE-Vol235-p61-79.pdf |
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| Adler, Steffen A.. |
| En lang rekke langvarige forsøk på produksjonssystemer har blitt gjennomført i de nordiske land. Hovedparten av disse ble startet etter 1980 og forsøkene varierer sterkt i målsetning, utforming og varighet. Men hva kommer ut av disse forsøkene? Har man fått en bedre forståelse av økologiske landbruks- systemer? Har ny kunnskap nådd ut til bonden og forbruke- ren? Og hvordan skjer dette? Til tross for stor interesse for produksjonssystemforsøk finnes det så langt ingen undersøkelse i Norden som systematiserer forsknings- designet og utforsker de kvalitative aspektene av kommunikasjonen mellom forsker, rådgiver og bonde. Kanskje denne hovedoppgaven i agro- økologi kan være til inspirasjon for en ny vurdering av systemforsøk. |
| Tipo: Journal paper |
Palavras-chave: Systems research and participatory research Education; Extension and communication. |
| Ano: 2004 |
URL: http://orgprints.org/6737/1/fnytt1046%2D9.pdf |
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| Adler, Steffen A.; Dahl, A.V.; Jensen, S.K.; Thuen, E.; Gustavsson, A.-M.; Steinshamn, H.. |
| Previous research has shown that grazing pastures compared to feeding preserved forages has large impact on milk fatty acid (FA) composition, but differences between grazing red clover (Trifolium pratense L.) or white clover (Trifolium repens L.) are small, whereas the herbage proportions of dicotyledon botanical families is positively correlated with the milk-fat proportions of total polyunsaturated FA when grazing pastures in the Alps. The objective of the present study was to investigate the influence of botanically different pastures on bovine milk composition and milk susceptibility to oxidation. Two groups of 8 multiparous Norwegian Red dairy cows [mean (standard deviation); 599 (45.1) kg body weight, 73 (15.0) d in milk, 29.9 (2.90) kg milk/d at... |
| Tipo: Journal paper |
Palavras-chave: Dairy cattle Pasture and forage crops Food security; Food quality and human health. |
| Ano: 2013 |
URL: http://orgprints.org/23128/1/Adler%20et%20al%202013%20Fatty%20acid%20composition%20fat%20soluble%20vitamin%20concentration%20oxidative%20stability%20bovine%20milk%20pasture%20botanical%20composition.pdf |
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| Adler, Steffen A.; Jensen, S.K.; Govasmark, Espen; Steinshamn, Håvard. |
| Bulk tank milk from 28 dairy farms was sampled every second month for 2 yr to assess the effects of grassland management, production system and season on milk fatty acid (FA) composition, concentrations of fat-soluble vitamins, Se, and milk sensory quality. Grassland management varied in terms of time since establishment. Short-term grassland management (SG) was defined as establishment or reseeding every fourth year or more often, and long-term grassland management (LG) was defined as less frequent establishment or reseeding. Fourteen organic (ORG) dairy farms with either short-term or long-term grassland management were paired with 14 conventional (CON) farms with respect to grassland management. Within ORG farms, SG farms differed from LG farms in... |
| Tipo: Journal paper |
Palavras-chave: Dairy cattle Pasture and forage crops Food security; Food quality and human health. |
| Ano: 2013 |
URL: http://orgprints.org/23130/1/Adler%20et%20al%202013%20Effects%20short-term%20long-term%20grassland%20management%20seasonal%20variation%20oganic%20conventional%20dairy%20farming%20composition%20bulk%20tank%20milk.pdf |
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| Adler, Steffen A.; Slizyte, Rasa; Honkapää, Kaisu; Løes, Anne-Kristin. |
| Beta-keratin in poultry feathers is a structural protein that is resistant to degradation due to disulfide and hydrogen bonds. Feather meal can be a valuable feed compound if the digestibility can be increased. The objective of the present study was to analyze the effects of chemical, enzymatic, and pressure-thermic treatments for chicken feathers on solubility, in vitro protein digestibility (IVPD), and amino acid composition of solubilized and residual fractions. Two experiments were conducted. In experiment 1, models for solubility and IVPD were developed including the above factors applying a central composite face-centered design. Addition of sodium hydroxide (NaOH) and sodium sulfite (Na2SO3), and autoclaving time affected solubility and IVPD of the... |
| Tipo: Journal paper |
Palavras-chave: Feeding and growth Recycling; Balancing and resource management Processing; Packaging and transportation. |
| Ano: 2018 |
URL: http://orgprints.org/33408/1/pey175.pdf |
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| Adler, Steffen.A.; Randby, Åshild.T.. |
| Effekten av tre ulike konserveringsmetoder for bygg på fôropptak og melkekvalitet i økologisk landbruk ble testet i et fôringsforsøk med cross over design med tre perioder á en uke. Kyrne ble tildelt 6,0 kg TS (førstekalvskyr 5,0 kg TS) av enten tørket bygg (Arve), valset bygg ensilert med melasse, eller valset bygg ensilert med syrer. I tillegg til bygg ble kyrne tildelt grassurfôr ad libitum og en mineral/vitamin-blanding. Forsøket ble gjennomført i Bodø i mars 2004. Alle de tre metodene konserverte bygget godt. Konserveringsmetoden hadde ingen innvirkning på det totale fôropptaket. Kyrne var i sen laktasjon og melkeproduksjonen var lav, men det var ingen forskjell i ytelse mellom konserveringsmetodene for bygg. Innholdet av råprotein var lavt i... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection Feeding and growth. |
| Ano: 2005 |
URL: http://orgprints.org/6421/1/GKe_9_115H_Adler.pdf |
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| Adu-Gyamfi, J. J.; Myaka, F.A.; Sakala, W.D.; Odgaard, R.; Vesterager, J. M.; Høgh-Jensen, Henning. |
| Maize (Zea mays L.) is a major staple food in Sub-Saharan Africa but low soil fertility, limited resources and droughts keep yields low. Cultivation of maize intercropped with pigeonpea (Cajanus cajan L. Millsp.) is common in some areas of eastern and southern Africa. The objectives of this study were (1) to investigate dry matter, nitrogen (N) and phosphorus (P) accumulation in different plant components of maize-pigeonpea intercropping systems and (2) to report the effects of the intercrops on soil fertility. Maize-pigeonpea intercrops were compared to sole maize grown using farmers’ practices. Intercropping maize and pigeonpea increased (P<0.05) total system yield compared to sole maize in terms of biomass, N and P accumulation. Pigeonpea planted in... |
| Tipo: Journal paper |
Palavras-chave: Farming Systems. |
| Ano: 2007 |
URL: http://orgprints.org/18306/1/18306.pdf |
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| Registros recuperados: 4.506 | |
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