Katell Crépon

• Bachelor of Engineering
• Arvalis - Institut du Végétal

The use of a cleaner-separator to remove datura seeds from a batch of maize has proved effective, with removal rates of almost 100%. However, analyses carried out as part of the monitoring of datura contamination in maize harvests have shown that alkaloids are still detected in almost a quarter of samples no longer containing datura seeds, sometime...

To reduce the use of insecticides, silo operators are reconsidering their practices and implementing integrated pest management (IPM) to manage insect infestations. IPM requires the early detection of insects to react before infestation spread or to isolate infested lots. Depending on their position in the storage and handling chain, operators will...

Background and Objectives In the European Union, soybean production has increased by almost 130% over the last 10 years which also increases the risk of commingling of grains, especially during storage. Soy is a major allergen and stakeholders are then confronted with an increased risk of unintended presence of allergen in cereal products. The aim...

Background and objectives Weather conditions can deteriorate the test weight to the extent that some wheat lots see their access to the market compromised. Test weight degradation may be due to low grain density or to an alteration in packing characteristics, in particular because of a high level of impurities in the batch. Therefore, grain cleanin...

Méthodes de lutte physique dans un itinéraire de stockage sans insecticide : intérêts et limites La filière céréalière française s'est donnée pour objectif de réduire significativement l'utilisation d'insecticides en cours de stockage, en accord avec les objectifs des plans Ecophyto et avec les principes de la directive européenne sur l'utilisatio...

Grain aeration with ambient air is the primary method used in France to prevent and control insect infestations. French grain storage operators consider that complete total mortality of insects can be achieved by maintaining grain temperature at 5 °C for 3 months. A predictive model on insect survival at low temperature was developed, using data fr...

La lutte contre les insectes du stockage par la chaleur, ou thermo-désinsectisation, représente une alternative à l'utilisation des insecticides au stockage. L'efficacité de la chaleur sur la mortalité des insectes a été démontrée en utilisant des séchoirs à lit fluidisés, permettant des élévations rapides de températures et des traitements de cour...

The objective of grain storage control is to ensure a secure supply of food industries both in quantity and quality between two harvests. Despite efforts to monitor and control the environment, there are still risks of material and/or quality loss that can reach 50% of the total value of the harvest in developing countries, and between 5 and 10% in...

Une vaste campagne de prélèvements et d’analyses de grains dans les silos a permis de déterminer le niveau d’infestation en insectes (formes libres et formes cachées) des blés tendres en France. Plus du quart des échantillons (prélevés au printemps) présentent au moins un insecte, et l’espèce la plus fréquente et la plus abondante est le charançon...

Technical audits were achieved in 14 grain elevators in order to record pest management practices and to evaluate the cost of insect control management practices. Stored grain elevators that were selected for this study were representative of the different ways of insect pest prevention and control system in France. The selection of storage sites w...

According to the Hygiene Package Regulations, European Member States encourage the development and dissemination of national guides to good practice for hygiene and for the application of HACCP principles. These guides are developed by food business sectors. Within the oilseed crops food chain, such guides are developed at different stages: primary...

According to the Hygiene Package Regulations, European Member States encourage the development and dissemination of national guides to good practice for hygiene and for the application of HACCP principles. These guides are developed by food business sectors. Within the oilseed crops food chain, such guides are developed at different stages: primary...

Quiniou, N., Quinsac, A., Crépon, K., Evrard, J., Peyronnet, C., Bourdillon, A., Royer, E. and Etienne, M. 2012. Effects of feeding 10% rapeseed meal (Brassica napus) during gestation and lactation over three reproductive cycles on the performance of hyperprolific sows and their litters. Can. J. Anim. Sci. 92: 513–524. Largely due to increased prod...

Effect of faba bean (Vicia faba L.) type and incorporation rate on post-weaning and fattening performance of pigs. Two experiments were conducted to evaluate the effects of faba bean (Vicia faba L.) type and incorporation rate in phase 2, growing and finishing diets on pig performances. In a post-weaning experiment, 360 castrated male and female pi...

Faba bean (Vicia faba L.) is a protein-rich legume seed well adapted to most climatic areas of Europe and widely used for feed and food. Even if the seed is generally recognized to be of good nutritional value, existing genetic variability for seed composition offers possibilities for improvement of this trait by breeding. Four major quality types...

Faba bean tannins are known to decrease apparent protein digestibility. The vicine and convicine contained in the seeds reduce egg size in laying hens, but their effects in broiler chickens have never been reported. Vicia faba genotypes have been identified which result in a major reduction of these compounds in seeds.Tannins are located in seed hu...

Performances à long terme d'un troupeau de truies alimentées avec du tourteau de colza industriel pendant la gestation et la lactation Quatre bandes de truies sont utilisées pour étudier les effets de l'incorporation de 0 ou 10% de tourteau de colza industriel à basse teneur en glucosinolates (GLS) dans les aliments de gestation et de lactation sur...

European livestock production is highly dependent on soya bean imports from overseas. Besides environmental issues, i.e. long transport distances and the deforestation of the rainforest, soya bean cultivation in South America has lately been criticised for its negative social impacts, such as food shortening due to biofuel production and expulsion...

Despite successive agricultural policies, the EU is in deficit of protein sources for livestock. European livestock depends to a very large extent on the importation of soyabean meal which represents more than 0.4 of the protein supply of European feed. Pulses represent about 0.03 of the total protein supply of animals, and this proportion tends to...

Sequential feeding is a 48h-cycle feeding programme of two feeds, one protein-rich-energy-poor (P+E-) and the other energy-rich-protein-poor (P-E+). The intake of each sequential feed is an essential key to reach an overall nutritional balance with sequential feeding. Therefore, for the present study, it was of interest to investigate the effect of...

Current EU self-sufficiency in plant proteins is around 25% only. Whereas in the past decades the EU has increased its production in plant proteins by 230% (between 7 973 and 2003), the need in protein for feed has increased by 170% in the same time. The EU has never been self-sufficient, despite strong effort to encourage protein crops. But inside...

The main result of increased production of biodiesel from rapeseed oil in the next ten years will be an important availability of rapeseed meal on the market. Its utilization in quite good economical conditions probably requires to look for gains of quality. This decision lead to either genetic, either technological works. In any case, the chosen w...

Current EU self-sufficiency in plant proteins is around 25% only. Whereas in the past decades the EU has increased its production in plant proteins by 230% (between 1973 and 2003), the need in protein for feed has increased by 170% in the same time. The EU has never been self-sufficient, despite strong effort to encourage protein crops. But inside...

The main result of increased production of biodiesel from rapeseed oil in the next ten years will be an important availability of rapeseed meal on the market. Its utilization in quite good economical conditions probably requires to look for gains of quality. This decision lead to either genetic, either technological works. In any case, the chosen w...

Digestible energy and standardised ileal digestibility of amino acids of faba beans determined with growing pigs. Two trials were realised on growing pigs in order to determine the nutritive value of faba beans cultivars, cultivated or still in a breeding processing. In the first trial, the faecal digestibility of energy and nitrogen were measured...

In three experimental facilities (Exp.1, 2 and 3), two organic diets, one complex including processed feedstuffs as wheat bran and heat-treated soya beans (control), the other simplified and containing over 80 % of cereal and pulses (CP), were compared for growing-finishing pigs. The base components of the CP diets were moist maize grain, wheat and...