Personne :
Kone, Amenan Prisca Nadege

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Kone
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Amenan Prisca Nadege
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Institut sur la nutrition et les aliments fonctionnels (INAF), Université Laval
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Voici les éléments 1 - 6 sur 6
  • Publication
    Accès libre
    Effects of plant extracts and essential oils as feed supplements on quality and microbial traits of rabbit meat
    (Universitat Politècnica de València, Instituto de Ciencia y Tecnología Animal, 2016-04-01) Kone, Amenan Prisca Nadege; Desjardins, Yves; Gosselin, André; Cinq-Mars, Dany; Saucier, Linda; Guay, Frédéric
    The effects of dietary supplementation with onion, cranberry and strawberry extracts and essentials oils on meat quality were analysed. Five groups of 48 Grimaud female weaned rabbits received the supplemented or the control ration; the experimental unit was a cage of 6  rabbits. Each experimental diet contained 10 ppm of added active ingredients. Rabbits were fed with the experimental diets for 4 wk before determining slaughter and carcass traits and determining the pH at 1 and 24 h post mortem (pHu) of the Longissimus dorsi (LD) and the Biceps femoris muscle, left and right, respectively. Cooking loss, drip loss and L*, a* and b* colour parameters were obtained for the right LD and for ground meat and antioxidant status (TBARS, DNPH, Folin Ciocalteu) was measured. Only the pHu of the LD muscle for the strawberry supplemented group was significantly lower when compared to the control group (P=0.04). However, we note that for the pH of the LD, the average was less than 6 for the meat of animals that received a diet enriched in polyphenols, compared to the control group. Plant extract supplementation did not influence meat quality traits, growth performance or oxidative stability. However, under aerobic and anaerobic conditions, our results indicate that dietary supplementation with extracts rich in polyphenols, especially with essential oils, had a small but sporadic positive effect in reducing bacterial microflora compared to the control group (P<0.05). In conclusion, plant extracts and essential oils can be used in a rabbit diet without adverse effects on performance and meat quality traits. This effect could be optimised by investigating higher doses.
  • Publication
    Accès libre
    Plant extracts and essential oil product as feed additives to control rabbit meat microbial quality
    (2018-12-23) Kone, Amenan Prisca Nadege; Desjardins, Yves; Gosselin, André; Cinq-Mars, Dany; Saucier, Linda; Guay, Frédéric
    The present work evaluated the effects of feed supplementation with plant extracts (onion, cranberry) and a commercial essential oil product (Xtract™) on rabbit meat quality. Five groups of 48 weaned Grimaud female rabbits each received a control ration (C) or a diet supplemented with onion extract (500 or 1000 ppm), cranberry extracts (500 ppm) and essential oil product (100 ppm) alone or in combination. Microbiological quality was evaluated on whole hind legs stored under aerobic and anaerobic conditions at 4 °C. Growth performances, feed intake and both meat composition and quality were similar amongst the experimental groups. Anyhow, meat total phenolic content was significantly higher in all supplemented ones (P < 0.001). Diet supplementation effect was observed (P < 0.05) and microbial control was improved more importantly under anaerobic conditions, notably for Total Aerobic Mesophilic counts, presumptive Pseudomonas and Enterobacteriaceae (P < 0.03). Overall, supplementation with onion extract (500 ppm) suppressed microbial growth more effectively.
  • Publication
    Accès libre
    Positive modulation of meat microbial ecology by feeding strategies
    (2016-08-14) Kone, Amenan Prisca Nadege; Gagné, Dominic; Cinq-Mars, Dany; Saucier, Linda; Guay, Frédéric
    The objective of this work was to determine if it is possible to modulate carcass/meat contamination by feeding farm animals with a diet supplemented with a protective culture, here Carnobacterium maltaromaticum CB1/UAL307 producing three bacteriocins, including carnocyclin A. A total of 144 weaned Grimaud female rabbits (a commercial meat breed) were divided into two feeding groups: 1) a control commercial diet and 2) the same diet supplemented with Micocin®, a commercial preparation of C. maltaromaticum CB1, at a final concentration of 8-log CFU (Colony Forming Unit) per kg of feed. Rabbits were fed their respective diet until they reached a commercial slaughter weight of 2.2 kg. Presence of C. maltaromaticum producing carnocyclin A was confirmed by PCR amplification for three specific genes. Its prevalence was greater in faeces, on thighs and in ground meat from rabbits fed the ration supplemented with Micocin®. These results demonstrate that the microflora of the feed can influence the organisms contaminating the end products and emphasized the importance of providing farm animals with high microbial quality feed and hygienic conditions to grow.
  • Publication
    Accès libre
    Stratégies alimentaires naturelles et innovatrices pour améliorer la qualité de la viande de lapin
    (2018) Kone, Amenan Prisca Nadege; Saucier, Linda; Guay, Frédéric
    La viande de lapin est appréciée notamment pour sa bonne valeur nutritive, et surtout pour sa faible teneur en matières grasses par rapport à d'autres espèces. Cependant, sa haute valeur nutritive est contrebalancée par un pH élevé, qui favorise la croissance microbienne et augmente ainsi les risques associés à l’innocuité des aliments. De plus, sa richesse en acides gras polyinsaturés la rend plus sensible aux réactions d'oxydation, ce qui affecte le goût, la valeur nutritive et la fonctionnalité de ces composants, tout en conduisant à la détérioration et au gaspillage de la viande. Nous avons donc identifié l’utilisation d’ingrédients naturels bioactifs comme une alternative potentielle permettant à l’industrie de la viande de résoudre cette problématique. Pour ce faire, nous avons initié, dans un premier temps, des études sur l’utilisation d’extraits de végétaux (oignon, canneberge et fraise, NutraCanada) et d’huiles essentielles (Xtract, Pancosma) riches en polyphénols, afin d’optimiser la qualité de la viande de lapin (lapines sevrées). À une concentration de 10 ppm d’ingrédients actifs (selon les recommandations du fournisseur pour promouvoir un système digestif en bonne santé chez le lapin pour les huiles essentielles utilisées), le statut oxydatif de la viande immédiatement après l’abattage n’a pas été modifié. Même observation pour des concentrations jusqu’à 10 fois plus élevées avec les extraits de végétaux. Par contre, une faible réduction de la microflore a été observée et pouvant atteindre jusqu’à 1,5 log UFC/g (unité formant une colonie) pendant l’entreposage réfrigéré, mais de façon sporadique, et ce même avec les doses les plus élevées. Dans un deuxième temps, l'enrichissement du régime alimentaire de lapins avec une culture protectrice (Carnobacterium maltaromaticum CB1 produisant trois bactériocines, Micocin®), a été étudiée pour sa capacité à moduler positivement la qualité microbiologique des produits finaux. La microflore sur les cuisses réfrigérées a été modulée favorablement par l'addition de Micocin® dans le régime alimentaire en réduisant les comptes des entérobactéries, coliformes et Listeria spp., mais plus encore, a réduit les comptes de Listeria monocytogenes inoculés expérimentalement dans la viande hachée de plus de 2 log comparativement au groupe contrôle. Précisons que les performances zootechniques n’ont pas été affectées par les différentes stratégies alimentaires étudiées. En conclusion, l’ajout à la ration des lapins d’une culture protectrice capable d’améliorer positivement la microflore de la viande a eu des effets bénéfiques supérieurs à ceux observés avec les extraits de plantes et d’huiles essentielles et s’avère une stratégie nutritionnelle plus efficace pour améliorer la qualité microbiologique de la viande de lapin.
  • Publication
    Accès libre
    Natural sources of polyphenols as feed additives to improve rabbit meat quality
    (Éditeur non identifié, 2018-08-12) Kone, Amenan Prisca Nadege; Desjardins, Yves; Gosselin, André; Cinq-Mars, Dany; Abdelwahed, Mohamed Z.; Saucier, Linda; Guay, Frédéric
  • Publication
    Accès libre
    Application of Carnobacterium maltaromaticum as a feed additive for weaned rabbits to improve meat microbial quality and safety
    (Applied Science Publishers., 2017-10-02) Kone, Amenan Prisca Nadege; Zea, Juliana Maria Velez; Gagné, Dominic; Cinq-Mars, Dany; Saucier, Linda; Guay, Frédéric
    This study addresses the improvement of meat microbial quality by enriching the diet of farm animals with a protective culture. Weaned Grimaud rabbits were divided into two experimental groups: a control and a diet supplemented with Micocin® (Carnobacterium maltaromaticum CB1; 8 Log10 CFU/kg of feed). Overall, meat quality was not affected substantially by the treatment. Total Aerobic Mesophilic (TAM), Escherichia coli and other coliforms, Enterobacteriaceae, Staphylococcus aureus, Pseudomonas spp., Listeria spp. and presumptive lactic acid bacteria counts were evaluated on whole thighs stored under aerobic (0, 3, 6, 8 days) and anaerobic (0, 5, 10, 15, 20 days) conditions at 4 °C. The results demonstrated that the microflora on refrigerated thighs was modulated by the addition of Micocin® (P < 0.05) and that the most effective reduction of Listeria monocytogenes growth was observed with ground meat stored under anaerobic conditions at 4 °C with a 2 Log difference at the end of a 15-day storage (P = 0.025).