Search results for "Agricultural Science"
showing 10 items of 901 documents
Katalog der dritten baltischen landwirtschaftlichen Ausstellung zu Riga, im Jahre 1880
1880
Inhalt: I. Theil. Gruppirung nach fortlaufender Schnuppen- und Ordnungsnummern ; II. Theil. Gruppirung nach Prämiirungs-Kategorien ; III. Theil. Alphabetisches Verzeichniß der Aussteller nebst Angabe ihrer Ausstellungsobjecte.
Effects of mountain grassland maturity stage and grazing management on carotenoids in sward and cow's milk
2006
Carotenoids are involved in the sensorial and nutritional values of dairy products. In grazing systems, both herbage maturity stage and grazing management may affect the amount of carotenoid ingested, thus these factors may affect carotenoid concentrations in milk. Two homogenous plots of mountain grassland (1.4 and 2.0 ha) were grazed during two cycles of growth by 6 dairy cows in mid lactation, in strip (SG) and rotational grazing (RG), respectively. We monitored the changes in carotenoid concentrations in sward and milk, measured by HPLC twice a week. Seven carotenoids were identified in the sward: violaxanthin, antheraxanthin, epilutein, lutein, zeaxanthin, ß-carotene and 13-cis ß-carot…
PSDR 4 : Un programme d’aide a la structuration des filières protéines végétales en Bourgogne-Franche Comté
2016
BAPGEAPSIGESTADAGROSUPINRA; International audience; Afin de répondre aux enjeux actuels (réduction des intrants, circuits courts, changement climatique…) les acteurs chercheurs-professions-politiques de Bourgogne et Franche Comté, engagés sur la production de protéines végétales et leur utilisation en alimentation animale et humaine, ont convenu de construire une action PSDR 4 (Pour et Sur le Développement Régional ) visant le développement et la triple performance économique-environnementale- sociale de cette filière importante pour l'activité de ce territoire. L’ambition de ce programme est de répondre aux principales questions que se posent actuellement les différents acteurs de la filiè…
Facilitated transport of diuron and glyphosate in high copper vineyard soils.
2007
6 pages; International audience; The fate of organic herbicides applied to agricultural fields may be affected by other soil amendments, such as copper applied as a fungicide. The effect of copper on the leaching of diuron and glyphosate through a granitic and a calcareous soil was studied in the laboratory using sieved-soil columns. Each soil was enriched with copper sulfate to obtain soil copper concentrations of 125, 250, 500, and 1000 mg kg(-1). Glyphosate leaching was influenced by soil pH and copper concentration, whereas diuron leaching was not. In the calcareous soil, glyphosate leaching decreased as copper levels increased from 17 mg kg(-1) (background) to 500 mg kg(-1). In the gra…
Dynamics and identification of soil microbial populations actively assimilating carbon from 13C-labelled wheat residue as estimated by DNA- and RNA-S…
2007
International audience; This work is the first report on the use of DNA-, RNA-SIP approaches to elucidate the dynamics and the diversity of bacterial populations actively assimilating C derived from plant residues labelled at more than 90% (13)C. Wheat-residues, were incorporated and incubated into soil microcosms for 28 days. At the end of the incubation time, no more than 55% of the total CO(2) released was (13)C-labelled, suggesting the occurrence of an important priming effect process. After 7 days, more than 30% of the whole DNA extracted were labelled, allowing an efficient separation of labelled from unlabelled DNA using density gradient centrifugation. The genetic structure of bacte…
Biofonctionnements des sols tropicaux et mode de gestion des terres
2000
L'effet de la symbiose mycorhizienne sur la croissance du mil a été étudié en conditions contrôlées. Le sol collecté au sud du Sénégal dans un champ cultivé et dans une jachère de 17 ans a été mélangé et stérilisé. Il a ensuite été inoculé avec le #Glomus aggregatum$. La croissance de plants de mil cultivés sur ce sol a été comparée à une série témoin, cultivée sur sol non inoculé. La mycorhization des racines de mil a été faible. Elle n'a pas provoqué de réaction de stimulation de croissance. Cette absence de réponse pourrait s'expliquer par l'utilisation d'une souche exotique et non d'une souche indigène de champignon mycorhizien. (Résumé d'auteur)
Conjugated linolenic acid (CLna), conjugated linoleic acid (CLA), and other biohydrogenation intermediates in plasma and milk fat of cows fed raw or …
2007
International audience; Thirty lactating dairy cows were used in a 333 Latin-square design to investigate the effects of a raw or extruded blend of linseed and wheat bran (70:30) on plasma and milk fatty-acids (FA). Linseed diets, containing 16.6% linseed blend on a dry-matter basis, decreased milk yield and protein percentage. They decreased the proportions of FA with less than 18 carbons in plasma and milk and resulted in cis -9, cis -12, cis -15 18:3 proportions that were more than three and four times higher in plasma and milk, respectively, whereas cis -9, cis -12 18:2 proportions were decreased by 10–15%. The cis -9, trans -11, cis -15 18:3 isomer of conjugated linolenic acid was not …
Revised annual post-market environmental monitoring (PMEM) report on the cultivation of genetically modified maize MON 810 in 2013 from Monsanto Euro…
2015
Question number: EFSA-Q-2015-00432On request from: European Commission; Following a request from the European Commission, the Panel on Genetically Modified Organisms of the European Food Safety Authority (EFSA GMO Panel) assessed the results of the general surveillance activities contained in the revised annual post-market environmental monitoring (PMEM) report for the 2013 growing season of maize MON 810 provided by Monsanto Europe S.A. The supplied data do not indicate any unanticipated adverse effects on human and animal health or the environment arising from the cultivation of maize MON 810 cultivation in 2013. Similar methodological shortcomings to those observed in previous annual PME…
Production de styrene par Penicillium camemberti Thom
1989
National audience; The Celluloïd taste observed in some mould-ripened cheeses is bound to the presence of styrene in these cheeses. The accumulation of this molecule was only detected on cultures of some strains of Penicillium camemberti. It seems to be bound to a deregulation of oxidative metabolism of tneee strains.; L'apparition du goût de Celluloïd dans les fromages à pâte molle à croûte fleurie est liée à la présence de styrène dans ces fromages. L'accumulation de cette molécule n'est observée que sur des cultures de souches particulières de Penicillium camemberti. Elle semble liée à un dérèglement du métabolisme oxydatif de ces souches.
Ecologie évolutive de la malaria aviaire : approches expérimentales des relations entre Plasmodium relictum et le canari domestique
2010
Host-parasite interaction became one of the main topics of evolutionary sciences researches. One of the major issues raised by these studies is to understand why some parasites cause fatal diseases while others remain relatively mild to their hosts. In this challenge attempting to take up the evolutionary biologist and the medical sciences, we focused on avian malaria, and more specifically on its most common parasite: Plasmodium relictum. In performing experimental infections in domestic canaries (Serinus canaria), we wanted to understand what factors related to parasite and birds characteristics, could influence Plasmodium relictum virulence. We highlighted that factors such as infectious…