Effects of quinoaseed-based diets in combination with enzyme supplements on the serum biochemical parameters, nutrient digestibility, tibia characteristics and immunity of broiler chickens

The objective of this study was to examine the influenceof quinoa seed-based diets in combination with phytase and protease enzymes on the serum biochemical parameters, nutrient digestibility, intestinal variables, tibia characteristics and immunity of broiler chickens. A total of 250 one-day-old broiler chicks (ROSS 308) were randomly allocated into 5 treatments with 5 replicate pens per treatment and 10 birds each. The experimental treatments were a corn-soybean meal diet as control group or control diet supplemented with 150 g/kg of quinoa seed alone olone or supplemented with protease, phytase and combination of protease and phytase. The results indicated a significant decrease in serum concentration of cholesterol, triglycerides and AST activity of broilers fed quinoa seed supplemented with protease and phytase than the control group (P<0.05).Jejunum and ileum length enhanced in broiler chickens which received all experimental diets compared with control (P<0.05).Nutrient digestibility coefficients of crude protein calcium and phosphorous were significantly greater in broilers fed on diets supplemented with phytase or phytase +protease (P<0.05).In tibia variables, the highest concentration of calcium and phosphorous was observed in phytase or phytase+protease supplemented diets (P<0.05).the relative weight of bursa and spleen as immunity organs was increased in broilers fed protease or phytase supplemented diets (P<0.05). In conclusion, the addition of phytase or protease enzymes to quinoa seed-based diet may be a suitable scenario to improve nutrient digestibility, immunity or some tibia characteristics in broiler chickens.