Effect of Perilla Seed Extract on performance and disease resistance of laying hens

The effects of perilla seed extract (eugenin) with different concentration gradients on the performance and disease resistance of laying hens were studied without adding antibiotics such as quinol and erythromycin, while the level of other nutrients remained unchanged Test design and methods: 414 15 week old hens were randomly divided into 5 groups with 6 replicates in each group and 4 cages in each replicate The pre-trial period is one week, the normal trial period starts from March 16, 2002, and the trial period is nine weeks The control group was fed with basic diet, the experimental group was fed with eugenin, and each ton of diet was fed with four concentration gradients (200 g, 400 g, 2000 g and 4000 g) of eugenin The whole experiment was carried out in the chicken farm of Southwest Agricultural University The number of laying eggs, breaking eggs, egg weight and number of dead chickens were recorded every day, and the changes of their crowns and body shape were observed The egg production rate, egg weight, daily egg production, dead panning rate, breaking rate, feed intake and feed egg ratio of each treatment period were calculated Determine the start date of each process In the determination of egg weight, each treatment group was used to weigh 5 replicates, 4 eggs for each replicate Take the average number as the representative to analyze According to the results of the experiment and the analysis of the production performance, it is beneficial to increase the egg production rate by adding eugenin to the diet Among them, the egg production rate of the diet group added 200 grams of ziyueyoushengsu per ton was the highest, reaching 84.34% at 25 weeks old, 9.34% higher than that of the control group The second was that the dietary group with 400 g eugenin had reached 80.49% at 25 weeks old, which was 5.49% higher than that of the control group 75.58% of the diet group added 2000 g of eugenin, 0.58% higher than the control group, 76.54% of the diet group added 4000 g of eugenin, 1.54% higher than the control group The results showed that the egg weight of the test group was significantly higher than that of the control group when the egg production rate was over 70% From the egg production rate of 50% to the end of the experiment, the feed egg ratio of 200 g / T test group to 400 g / T test group was 2.6 and 2.7 respectively, which were lower than that of the control group (2.8) It can be seen that the addition of ziyueyoushengsu is beneficial to improve the feed utilization rate, and the best effect is 200 grams per ton Through the analysis of the test data, the resistance to disease of ziyueyousheng element has a significant enhancement effect on the resistance of laying hens; the breaking rate of the test group is lower than that of the control group; the breaking rate of the test group is significantly lower than that of the control group, and the breaking rate of the test group is also lower than that of the control group The results showed that the dead Amoy rate of each experimental group was lower than that of the control group Among them, 2000 g / T and 4000 g / T in the test group were significantly higher than that in the control group The death rate of 200 g / T and 400 g / T test groups was also lower than that of the control group, which indicated that the diet supplemented with eugenin was beneficial to enhance the resistance of layers to diseases During the whole experimental period, it can be observed that compared with the control group, the uniformity of chickens in the experimental group is better, the feathers are neat, tight and shiny; the crows are bright red, the body is strong, the body is plump, lively and active The economic benefits of 200 g / T and 400 g / T eugenin diet group were better than those of the control group, 45.72% and 17.86% higher than those of the control group, respectively However, the economic benefits of 2000 g / T and 4000 g / T eugenin diet groups were not significantly different from those of the control group It can be seen that the lower concentration of eugenin diet is conducive to improving the economic benefits of laying hens Conclusion adding 200 g and 400 g of eugenin per ton of diet can significantly improve the performance (laying rate, egg weight, etc.) of laying hens, effectively improve the resistance of laying hens to diseases, have a good effect on the crow and body shape of laying hens, and significantly improve the economic benefits of laying hens Among them, the best effect is to add 200 g of eugenin per ton.