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Registros recuperados: 5
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Effect of initial fertilisation on biomass and nutrient content of Norway spruce and Douglas-fir plantations at the same site Inra
Sicard, C.; Saint Andre, L.; Gelhaye, D.; Ranger, J..
Norway spruce (NS) and Douglas-fir (DF) are among the main species used for production forestry in France. In low-elevation mountains and under-acidic conditions, they often occupy the same ecological situations. It is therefore of paramount interest to have a good understanding of how the two species behave under similar conditions and how they react to site improvement by fertilisation. The study stands are part of an experimental stand located in the estate forest of Breuil-Chenue in the Morvan (east central part of France). Its aim is to compare the impact of change in species on ecosystem functions. Destructive sampling of 10 trees per stand, distributed over the whole spectrum of inventoried classes of circumference at breast height (c 1.30), was...
Tipo: Journal Article Palavras-chave: PEUPLEMENT FORESTIER; TENEUR EN ELEMENTS NUTRITIFS DOUGLAS FIR; NORWAY SPRUCE; BIOMASS; NUTRIENT CONTENT; FERTILITY; ALLOMETRY; NUTRIENT USE EFFICIENCY .
Ano: 2006 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20107893e259&uri=/notices/prodinra1/2010/11/
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Eleven generations of selection for the duration of fertility in the intergeneric crossbreeding of ducks Inra
Cheng, Y.S.; Rouvier, R.; Liu, H.L.; Huang, S.C.; Huang, Y.C.; Liao, C.W.; Liu Tai, J.J.; Tai, C.; Poivey, J.P..
Tipo: Journal Article Palavras-chave: TSAIYA DUCK; INSEMINATION ARTIFICIAL; FERTILITY; EGGS; SELECTION; MUSCOVY SEMEN; VARIABILITY.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200981791287&uri=/notices/prodinra1/2009/12/
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Environmental and genetic variation factors of artificial insemination success in French dairy sheep Inra
David, I.; Robert-Granié; Manfredi, E.; Lagriffoul, G.; Bodin, L..
Tipo: Journal Article Palavras-chave: DAIRY SHEEP; ARTFICIAL INSEMINATION; ENVIRONMENTAL VARIATION; GENETIC PARAMETERS; FERTILITY.
Ano: 2008 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20083a721c8b&uri=/notices/prodinra1/2008/07/
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Female fertility in French dairy breeds: current situation and strategies for improvement Inra
Barbat, A.; Le Mézec, P.; Ducrocq, V.; Mattalia, S.; Fritz, S.; Boichard, D.; Ponsart, C.; Humblot, P..
In most countries where genetic selection for milk production has been conducted, a continuous degradation of reproductive performances has been observed in dairy cattle. This paper describes the phenotypic evolution of fertility traits in France for the main 3 dairy breeds and the different actions undertaken to counteract this unfavourable evolution of reproductive performance. In 2001, functional traits (including conception rate as a fertility trait) have been included into the French total merit index ISU, to take these traits into account in the selection objective. In addition, a marker-assisted selection (MAS) program has been developed since 2001. Through this approach, a set of QTL related to fertility traits were identified using the phenotypic...
Tipo: Journal Article Palavras-chave: DAIRY CATTLE; FERTILITY; GENETIC SELECTION; PHENOTYPING; REPRODUCTIVE GENOMICS.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010e002cb0a&uri=/notices/prodinra1/2010/11/
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Pathological effects of the microsporidium Nosema ceranae on honey bee queen physiology (Apis mellifera) Inra
ALAUX, C.; Folschweiller, M.; McDonnell, C.; Beslay, D.; Cousin, M.; Dussaubat, C.; Brunet, J.L.; Le Conte, Y..
Nosema ceranae, a microsporidian parasite originally described in the Asian honey bee Apis cerana, has recently been found to be cross-infective and to also parasitize the European honey bee Apis mellifera. Since this discovery, many studies have attempted to characterize the impact of this parasite in A. mellifera honey bees. Nosema species can infect all colony members, workers, drones and queens, but the pathological effects of this microsporidium has been mainly investigated in workers, despite the prime importance of the queen, who monopolizes the reproduction and regulates the cohesion of the society via pheromones. We therefore analyzed the impact of N. ceranae on queen physiology. We found that infection by N. ceranae did not affect the fat body...
Tipo: Journal Article Palavras-chave: MICROSPORIDIE; PARASITE; REINE; SANTE; PHYSIOLOGIE; CORPS GRAS; ENERGIE; VITELLOGENINE; FERTILITE; LONGEVITE; ANTIOXIDANT; PHEROMONE MANDIBULAIRE MICROSPORIDIA; QUEEN; HEALTH; PHYSIOLOGY; FAT BODY; ENERGY; VITELLOGENIN; FERTILITY; LONGEVITY; MANDIBULAR PHEROMONE; PHEROMONE; HONEY BEE QUEEN; VITELLOGENIN; QUEEN MANDIBULAR PHEROMONES; ANTIOXIDANT CAPACITY.
Ano: 2011 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20116cf9b1bf&uri=/notices/prodinra1/2011/04/
Registros recuperados: 5
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