Authentication of Lambs Feed under Dry and Hot Environment Based on Color Parameters of Fats from Fat-tailed and Thin-tailed Breeds’ Measured Using Visible Reflectance Spectroscopy | Chapter 03 | Research Aspects in Agriculture and Veterinary Science Vol. 6

 Because pasture meat has a higher market value than meat produced in traditional systems, numerous authentication methods have been developed to distinguish it from meat produced in conventional systems. In temperate European settings and breeds, visual reflectance spectroscopy has proved to be successful. The goal of this study was to use reflectance spectroscopy to certify lamb meat from grassland-based systems in North Africa. This study studied the influence of the feeding system (FS) (P vs. S) and breed (Barbarine, BB; Queue Fine de l'Ouest, QFO; and Noire de Thibar, NT) on the weight and colour of perirenal, subcutaneous, and caudal fat in North African lambs. There were a total of 18 P and 18 S lambs utilised in this experiment. Each breed was represented by six P and six S lambs. The colour and reflectance spectra of different fat tissues were evaluated. The FS had a significant impact on the weights of all fat tissues and all colour parameters of perirenal and subcutaneous fat (P0.01), as well as the redness and yellowness of caudal fat (P0.01) (P0.05; P0.01). In all adipose tissues, S lambs showed more lightness and less redness and yellowness than P lambs. The breed had an effect on the weight, lightness, and redness of perirenal fat, as well as the weight and redness of subcutaneous fat, with a significant interaction with FS for subcutaneous fat data. At wavelengths between 450 and 510 nm (method 1, M1) or between 400 and 700 nm (method 2, M2), the reflectance spectra of perirenal, subcutaneous, and caudal fat was measured. Six P and six S lambs were used to symbolise each breed. Different fat tissues' colour and reflectance spectra were analysed. The FS had a significant effect on the weights of all fat tissues and all perirenal and subcutaneous fat colour parameters (P0.01), as well as the redness and yellowness of caudal fat (P0.01) (P0.05; P0.01). S lambs had more lightness and less redness and yellowness in all adipose tissues than P lambs. The weight, lightness, and redness of perirenal fat, as well as the weight and redness of subcutaneous fat, were all affected by the breed, with a significant interaction with the FS for subcutaneous fat data. Between 450 and 510 nm (method 1, M1) between 400 and 700 nm (method 2, M2). The reflectance spectra of perirenal, subcutaneous, and caudal fat were measured (method 2, M2).

Author(S) Details

Hadhami Hajji
Institut des Régions Arides, IRA-Mednine, Laboratoire D’élevage et de la Faune Sauvage, Route du Djorf Km 22.5,4100 Mednine, Tunisia and University of Carthage, INRA-Tunisie, Laboratoire de Productions Animales et Fourragères, rue HédiKarray, 2049 Ariana, Tunisia.

Sophie Prache
Institut National de la Recherche Agronomique, INRA, UMR1213 Herbivores, F-63122 Saint-Genès-Champanelle, France.

Donato Andueza
Institut National de la Recherche Agronomique, INRA, UMR1213 Herbivores, F-63122 Saint-Genès-Champanelle, France.

Naziha Atti
University of Carthage, INRA-Tunisie, Laboratoire de Productions Animales et Fourragères, rue HédiKarray, 2049 Ariana, Tunisia.

View Book:- https://stm.bookpi.org/RAAVS-V6/article/view/6986