Comparative Study On The Effects Of Eucommia Leaf And Probiotics On Lipid Metabolism Of Laying Hens

Highly intensive and large-scale livestock and poultry breeding, which limits the normal activities of animals, can easily lead to abnormal animal fat metabolism, and then produce metabolic diseases of animal fats and metabolic disorders.. How to produce low fat animal products through the nutrition way and improve the health problem caused by abnormal animal fat metabolism is one of the hot issues in the industry in recent years.. This experiment through comparative study in laying hen diets added impact on egg production performance, egg quality and lipid metabolism of eucommia leaf powder, probiotics, provide the basis for the application of eucommia leaf powder in poultry production.Test will be 540 only 23 weeks old hy line Brown laying hens were divided for three treatments, each treatment had six replicates of each repeat 30 layers. Three treatments were basal diet control group(Group I), 0.5% probiotics(Group II) and 0.5% eucommia leaf powder(Group III). The 1 week and the test period of the pre feeding period were 8 weeks.. Determination of laying hens performance and egg quality index, serum lipid metabolism related biochemical indicators- cholesterol(TC), triglyceride(TG), high density lipoprotein(HDL-C) and low density lipoprotein(LDL-C), egg yolk cholesterol and fatty acid content, liver of laying hens load relative expression quantity, the layers of the percentage of abdominal fat and liver organ index of lipoprotein(APO-A1) gene mRNA.The test results: 1. Diets adding 0.5% of Eucommia ulmoides and 0.5% probiotics can significantly improve the laying hen egg production rate(P < 0.05), reduce the average daily feed intake(P < 0.05), reduce the feed to egg ratio(P < 0.05), but differences in effect between probiotics and eucommia leaf Fener not significant(P > 0.05); the average egg no significant effect(P > 0.05). 2. Addition of 0.5% eucommia leaf, 0.5% probiotics powder of eggs eggshell strength, eggshell thickness, egg shape index, high protein, Haugh unit, yolk color showed no significant effect(P > 0.05). 3. Diets adding 0.5% of Eucommia ulmoides and 0.5% probiotics can significantly reduce the level of serum TC, TG, LDL-C, raising the level of HDL-C(P < 0.05). And eucommia leaf was better than probiotics group. 4. Diets adding 0.5% of Eucommia ulmoides and 0.5% probiotics can significantly reduce egg yolk cholesterol concentration(P < 0.05). But the egg fatty acid content of no significant effect(P > 0.05); diet added 0.5% probiotics on egg cholesterol and fatty acids had no significant effect(P > 0.05). 5. Diets adding 0.5% of Eucommia ulmoides and 0.5% probiotics can significantly increase in liver of laying hens carrying lipoprotein(APO-A1) gene mRNA expression(P < 0.05), which leaves of Eucommia ulmoides group was significantly higher than that of probiotics group. 6. Diets adding 0.5% of Eucommia ulmoides and 0.5% probiotics and test the final egg chicken abdominal fat rate decreased, liver index increased, but with the control group, the difference was not significant(P > 0.05).Conclusion: 1 dietary leaves and eucommia probiotics can significantly improve the performance of laying hens, but had no significant effect on egg quality; 2. Diets added probiotics and leaves of Eucommia ulmoides Oliv could significantly regulate the lipid metabolism of laying hens function, and leaves of Eucommia ulmoides can remarkable decrease the concentration of cholesterol in egg yolk and its regulation of fat metabolism was better than the effect of probiotics. Eucommia leaf and probiotics this effect may be related to improved layers on serum lipid metabolism and regulation of liver of laying hens APO-A1 gene mRNA expression of.