In the practice of broiler chickens, antibiotics are often added to the feed as growth promoters to increase the growth rate of broilers and improve their health. However, in view of the toxic side effects and drug residues of antibacterial drug feed additives, the development of new plant extracts as an alternative to antibacterial drugs has been one of the hot spots in the additive field in recent years. This experiment aims to study the application effect of the new feed additive Perilla frutescens extract (hereinafter referred to as "yousheng") in the production of broiler chickens, and to explore the appropriate amount of supplements in broiler chicken feed to provide a scientific basis for the practical application of this product. . The experiment was completed at the research farm of Shenyang Agricultural University. The test time was 42 days. 600 Avid broiler chickens were randomly divided into 5 treatment groups, ie, blank control group: fed basal diet; antibiotic control group: basal diet per kilogram + chlortetracycline 50 mg; test group 1: basic Diet + Perilla extract 250 mg per kilogram; Trial 2 groups: Basal diet + Perilla extract per kilogram 375 mg; Trial 3 groups: Basal diet + Perilla extract 500 mg per kilogram. From the test results, the daily gain of broiler chickens in the test group 1 combination antibiotic control group was significantly higher than that of the blank control group, which increased by 7.8% and 8.9% respectively, and the daily gain of the broilers in the test group 2 and 3 was higher than that of the blank control group; The feed-to-weight ratio of the combination antibiotic control group was significantly lower than that of the blank control group, which was decreased by 7.0% and 7.9% respectively. It can be seen that eugenics can effectively replace the antibiotics and effectively improve the production performance of broilers. From the survival rate of broilers, it can be seen that the survival rate of broilers in each group was higher than that in the blank control group and the antibiotic control group, indicating that eugenics can improve chicken immunity to a certain extent and reduce the incidence rate. A preliminary analysis of the economic benefits of the whole period of feeding showed that the economic benefits of the experimental group 1 increased by 46% compared with the blank control group, and there was no significant difference from the antibiotic control group. Integrate all test indicators and find that each kilogram is added 250 mg eugenics can significantly increase the growth rate and feed conversion rate of broilers, and effectively improve the survival rate and economic efficiency. Although its feeding effect is equivalent to 50 mg of chlortetracycline per kilogram, eugenics is safe, effective and environmentally friendly. Analyze eugenics better than antibiotics. Disposable Plastic Aprons,Plastic Aprons,Disposable Aprons,Disposable Polythene Aprons Surgimed Medical Supplies Co.,Ltd , https://www.surgimedcn.com
Perilla frutescens extract can effectively improve broiler production performance