Abstract
This study aimed to evaluate the effect of four combinations of dietary linseed oil and lysine mixtures on performance, fatty and amino acid profiles, oxidative stress biomarkers, cell energy and meat quality parameters of broiler chickens. One hundred and sixty broiler chicks were allocated into four groups. Birds of groups 1–4 were fed diets containing optimum lysine and 2% of linseed oil, optimum lysine and 4% of linseed oil, high lysine and 2% of linseed oil, and high lysine and 4% of linseed oil, respectively, for a period of 35 days. High linseed oil or lysine levels did not affect the performance of the tested birds, but the high level of dietary linseed oil decreased the concentrations of muscles’ saturated fatty acids (SFA). The highest values of ω-3 polyunsaturated fatty (ω-3 PUFA) and arachidonic acids with lowest levels of monounsaturated fatty (MUFA) were detected in the muscles of birds fed diets containing high linseed oils and/or lysine levels. High linseed oil or lysine levels provided the best essential amino acid profile and improved antioxidant components as well as cell energy, and tenderness and redness of the meat. Conclusively, high dietary lysine and linseed oil combinations improved the nutritional value, antioxidant status and cell energy of broiler chickens’ meat.
Highlights
Cardiovascular diseases (CVD) have been estimated to be a significant cause of morbidity and mortality worldwide accounting for about a third of all deaths [1]
Significant interaction between linseed and lysine was evaluated for final weight, weight gain (WG) and feed intake (FI) parameters (p < 0.05) (Table 2)
A combination of 4% of linseed oil and optimum lysine was better than the combination of 2% of linseed oil and high lysine in enhancing the final weight and weight gain of tested birds (Table 2)
Summary
Cardiovascular diseases (CVD) have been estimated to be a significant cause of morbidity and mortality worldwide accounting for about a third of all deaths [1]. The role of food additives in improving birds’ performance and meat quality has been investigated [12,13,14] One of these attempts is to add essential amino acids to diet to meet or exceed the National Research Council recommendations [15,16]. Lysine (Lys) is one of the essential amino acid necessary for proper growth performance and muscle development of broiler chickens. It was assessed as the second limiting amino acid after methionine in broiler corn–soybean meal based diets [17]. The current study aimed to evaluate the effect of four combinations of dietary linseed oil and lysine mixtures on performance, fatty and amino acid profiles, oxidative stress biomarkers and meat quality parameters of broiler chickens
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