Effect of perilla seed extract feed additive on broiler performance and intestinal environment

960 1-day-old AA broilers were randomly divided into 4 treatments, 4 replicates per treatment and 60 chickens per replicate Treatment 1 control group: basic diet; treatment 2, 3, 4 test group: 150, 250, 350 mg / kg perilla seed extract were added to the basic diet Results and analysis of perilla seed extract to improve broiler performance Compared with the control group, adding 150 mg / kg perilla seed extract to the diet significantly increased the average daily gain of broilers; adding 150 mg / kg, 250 mg / kg and 350 mg / kg perilla seed extract to the diet respectively reduced the feed to weight ratio of broilers in different degrees, and the feed to weight ratio was significant at the level of 250 mg / kg perilla seed extract Compared with the control group The mechanism of improving the performance of Broilers by Perilla Seed Extract 1 The effect of different levels of Perilla Seed Extract on the development of lipase, trypsin and amylase in different intestinal segments of broilers Compared with the control group, adding 150 mg / kg, 250 mg / kg and 350 mg / kg perilla seed extracts to the diet increased the digestive enzyme activity of each intestinal segment to varying degrees Among them, 250 mg / kg can significantly improve the enzyme activity of digestive enzymes in each intestinal segment, and significantly improve the nutrient utilization rate of feed 2 The effect of different levels of Perilla Seed Extract on pH in digestive tract of broiler After adding different levels of perilla seed extract to broiler diet, the total pH value of glandular stomach, muscular stomach, duodenum and jejunum at 42 days old was lower than that of the control group, and the pH value of ileum was higher than that of the control group Summary from the above results, it can be seen that adding 150 mg / kg ~ 250 mg / kg perilla seed extract to broiler diet can optimize the intestinal environment of broiler, improve the utilization rate of nutrients, improve the production performance, reduce the ratio of feed to meat, and significantly improve the economic benefits of broiler feeding.