Combination of 9 assays for calculation of relationships between wheat AMEn values in broilers and wheat physicochemical parameters

Carré Bernard, Juin Hervé, Bastianelli Denis, Launay C., Robert O., Feuillet D., Provot M., Darroze Serge. 2010. Combination of 9 assays for calculation of relationships between wheat AMEn values in broilers and wheat physicochemical parameters. In : XIIIth European Poultry Conference, 23-27 août 2010, Tours, France. s.l. : s.n., 5 p. European Poultry Conference. 13, Tours, France, 23 Août 2010/27 Août 2010.

Résumé : Two experiments (1 and 2) were conducted to complete the calculations of relationships between AMEn value of wheat samples and their physical or chemical parameters conducted in two previous experiments (Carré et al., 2002, 2005). Experiments 1 and 2 were each divided into three identical assays conducted with 3 week interval. Twenty and 21 wheat samples were tested in experiments 1 and 2, respectively, with 15 individual replicates (Ross chickens maintained in individual cages, 5 replicates per wheat and assay) per wheat samples. Wheat samples were introduced at a level of 56% in pelleted diets. Birds were fed the wheat experimental diets from 16d. AMEn value of diets was determined in each bird from 21d to 23d. AMEn values assigned to wheat samples were calculated for each bird according to the AMEn additivity principle, using a constant AMEn value for each of the other ingredients of diets. Data from these two experiments were combined to previous ones (Carré et al., 2002, 2005). So, calculations combined 9 assays including 77 wheat samples and a total of 893 individual chicken data. The mean wheat AMEn value was 13,396 (J/g DM). Effects of assays, wheat Water-Insoluble Cell Wall (WICW) content (% DM) , wheat hardness ( 0 to 100) and in vitro viscosity of wheat aqueous extract (Real Applied Viscosity, RAV, ml/gDM) combined together were all significant (P = 0.0001, except for RAV : P = 0.0003) on individual wheat AMEn values , with negative coefficients of - 144.5, - 4.69 and - 139.8 for WICW, hardness and RAV, respectively.

Classification Agris : L02 - Alimentation animale
L50 - Physiologie et biochimie animales

Auteurs et affiliations

• Carré Bernard, INRA (FRA)
• Juin Hervé, INRA (FRA)
• Bastianelli Denis, CIRAD-ES-UPR Systèmes d'élevage (FRA) ORCID: 0000-0002-6394-5920
• Launay C., INZO (FRA)
• Robert O., Bioplante (FRA)
• Feuillet D., INRA (FRA)
• Provot M., INZO (FRA)
• Darroze Serge, INZO (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/556548/)

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