les souches de poulet de chair pdf

Near infrared (NIR) reflectance spectroscopy was investigated as a mean of discriminating between "slow-growing" and "industrial" chicken strains. C’est donc par rapport àce critère (souche à croissance lente) que nous avonschoisi de développer nos modèles de discrimination. The authors have already tested, Near Infrared Reflectance Spectroscopy (NIRS) to authenticate slow growing chicken meats. Cette fois, ils ont étendu leur étude à un nombre d’individus plus important et prennent en compte la situation de produitsde qualité intermédiaire (poulet de marque faisant l’objet d’une certification de conformité en accord avec la réglementationanalytique de contrôle des productions sous label de poulets de chair issus de souches à croissance lente.Rapid authentication of certified chicken meat: distinguishing slow and fast growing chicken strains using near authors have already tested, Near Infrared Reflectance Spectroscopy (NIRS) to authenticate slow growing chicken meats.Their study was extended on a larger set and takes account of special labelling according to European regulation91/1538/CEE. Ils présentent descaractéristiques organoleptiques qui sont tantôt plusproches de l’industriel, tantôt plus proches du label,suivant le choix de la souche, l’âge d’abattage. L'âge d'abattage, critère essentiel de la charte Cependant, elles ne conduisent pasLes recherches décrites dans ce travail font l’objet d’uncontrat de recherche (contrat NP/42/022) subventionné parle programme “Normes des produits alimentaires” du pland’appui scientifique à une politique de développementinfrared reflectance spectroscopy for the determinationof moisture, fat and protein in chicken breast and thighCaractéristiques des carcasses et de la viande du poulet(1994). Particular difficulty was encountered in distinguishing between chicken and turkey; models were, therefore, initially developed using five separate meat classes and again using four groups, with chicken and turkey being amalgamated into a single class. The spectrum in the visible region of 400–750 nm, the short-wavelength NIR region of 750–1100 nm or the long-wavelength NIR region of 1100–2500 nm can also produce satisfactory classification depending on sample presentation methods and regression models. The number of poultry meat products with quality marks continues to increase. Centre de Recherches agronomiques de Gembloux. The spectroscopic classification was supported by physical and chemical properties of meat samples, which showed significant differences in collagen and fat contents and pH and chromatic values between the two groups of chickens. Their study was extended on a larger set and takes account of special labelling according to European regulation 91/1538/CEE. The meat juices were analysed using dry extract spectroscopy by infrared reflection (DESIR). D’autres critères tels que la teneur en graisse ou le rendement en muscles des carcasses, la couleur de la peau et des plumes (quand elle est visible) sont aussi pris en considération. Seventy-two chickens (39 "slow-growing" chickens and 33 Near infrared reflectance spectroscopy (NIRS) is known to be a rapid, low-cost, reproducible method which allows the prediction of several soil properties at the same time. Within the resulting fingerprints, two fragments were identified as type-strains specific markers. Elle introduit ensoumises à une certification. Les poulets label diffèrent peu des poulets(1999b). However, the sum of individual predicted saturated and unsaturated FA was acceptable compared with the reference method (SEP = 1.10 and 1.12%, respectively). These positive results show that the technique could be integrated in an analytical system of surveillance of certified meat products.A near-infrared spectroscopic method was developed with a dummy regression technique to differentiate meat originating from broilers and Chinese local chickens.

Our results show that the technique could be integrated in an analytical system of surveillance of slow-growing chicken meat products with quality mark. Beef neck lean was collected from meat processing establishments using advanced meat recovery systems and hand-deboning. :poulets de souches à croissance lente nourris avec unealimentation de type industriel ou poulets à croissancerapide nourris avec une alimentation de type label).individus ayant servis à construire nos modèles. Most of those certified productions have specifications requiring the use of slow-growing chicken strains. (**) Mélange 50/50 de blanc sans peau et de cuisse sans peau.Authentification rapide des poulets de chair sous labelchoisissant de manière aléatoire 2/3 des individus dechaque population (soit 40 poulets à croissance lenteet 40 poulets industriels). FDA and PLS discrimination generally produced the best accuracy rates. Our results show that the technique could be integrated in an analytical system of surveillance of slow-growing chicken meat products with quality mark.All content in this area was uploaded by O. FumièreSpectres NIR moyens des échantillons de blanc sans peau (-), de cuisse avec peau (-), de carcasse avec peau (....) et de peau ( _ _ _ ) mesurés au moyen du NIRSystems 6500-Mean visible/NIR reflectance spectra of samples of breasts without skin (-), legs with skin (-), carcasses with skin (....) and skins ( ___ ) obtained using the NIRSystems 6500.Spectres NIR moyens des échantillons de blanc sans peau (.......), de cuisse avec peau ( _ _ _ ) et de carcasses avec peau ( _ _ _ ) mesurés au moyen du PERTEN DA 7000-Mean visible/NIR reflectance spectra of samples of b reasts without skin (.