![]() ![]() A multiple linear model revealed that in breasts, the dietary treatment significantly influenced (p < 0.05) the FA profile, lipid metabolism and health lipid indices, while the slaughtering weight was related (p < 0.05) to most of elements (e.g., Na, Mg, K, Mn, and Se) and vitamin E. Lipid metabolism indices and health lipid indicators were assessed along with the nutritional value. Hence, functional and standard Pectoralis major muscles from every market class were analyzed for FA composition, inorganic elements and vitamin E. A completely randomized block design was set up, where the experimental unit (n = 6000 birds) received conventional or enriched diet and was slaughtered at 37 (light class), 47 (medium class), or 57 (heavy class) days of life. The effect of dietary enrichment with flaxseed, selenium and vitamin E, and market class on the nutritional and functional value of breast meat was evaluated. In conclusion, based on these results, using ELP30 alone in broiler diets is recommended to improve meat’s nutritional value for consumers. Probiotics reduced some lipid indices (PUFA/SFA ratio, desirable FA and nutritive value index) only when ELP0 was fed. Dietary treatment interaction exhibited a synergistic effect for total PUFA and an antagonistic effect for n-3 PUFA and n-6/n-3 PUFA ratio in breast muscle. Probiotics increased total PUFA, omega-6 (n-6) and decreased the n-6/n-3 ratio, total UFA, and UFA/SFA ratio. The ELP diet improved the breast muscle FA profile by lowering total saturated FA (SFA) and increasing total polyunsaturated FA (PUFA), omega-3 (n-3), unsaturated FA (UFA), PUFA/SFA, and UFA/SFA ratios. A probiotic addition lowered the total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), and the TC/HDL-C and LDL-C/HDL-C ratios. Feeding the ELP diet increased plasma total protein, urea nitrogen (PUN), and creatinine (Cre) levels with no changes in the PUN/Cre ratio. There were no effects of ELP diet or probiotic supplementation on performance and carcass traits. A total of 480 one-day-old Ross 308 broilers were assigned into four groups in a 2 × 2 factorial arrangement with two levels of ELP (0% and 30%) at the expense of soybean meal, corn, and vegetable oil and two levels of probiotic (0 and 20 g ton−1 feed). acidophilus) on the performance, biochemical responses, breast muscle fatty acids (FA) profile, and lipid indices in broiler chickens. This study evaluated the effects of a dietary mixture based on extruded linseed and pea (ELP 20:80 w/w) and probiotics (L.
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