Effects of Lactobacillus acidophilus Post-Biotic on Production Performance,Blood Indexes and Egg Quality of Laying Hens in the Initial Laying Stage
[Objective]The purpose of this study was to reveal the effect of dietary supplementation with Lactobacillus acidophilus post-biotic(LAPB)on the production performance,blood indexes and egg quality of laying hens in the initial laying stage.[Method]A total of 216 23-week-old healthy Hy-line Brown laying hens were randomly divided into 3 treatment groups,with 6 replicates and 12 chickens per replicate.The control group was fed a basal diet,and the experimental groups were fed the basal diet supplemented with 0.1％or 0.2％LAPB,respectively.One week was used for feed adaption.The formal feeding period was 8 weeks.The egg production was recorded every day,and the feed intake was recorded weekly.At weeks 4 and 8,5 eggs were collected per replicate for egg quality determination.At the end of the feeding,one layer per replicate was selected for blood samples collection,and then blood routine and serum biochemical indexes were measured.[Result]Compared with control group,the addition of 0.1％or 0.2％LAPB in diets significantly increased the average egg weight and average daily egg mass(P＜0.05),reduced the feed-to-egg ratio(P＜0.05),improved the egg yolk color,thick/thin albumen ratio and albumen height(P＜0.05),had no effect on blood routine indicators(P＞0.05),and increased the contents of total protein,total cholesterol,triglycerides,high-density lipoprotein and low-density lipoprotein in serum(P＜0.05),among which,the 0.1％addition level increased the serum creatinine content and reduced the activity of aspartate aminotransferase of laying hens in the initial laying stage(P＜0.05).[Conclusion]Dietary addition of 0.1％or 0.2％LAPB could effectively improve the production performance and egg quality of laying hens in the initial laying stage,and regulate fat metabolism,enhance liver and kidney health,immunity and antioxidant capacity,and the recommended dosage was 0.1％.
Lactobacillus acidophiluspost-bioticlaying hens in the initial laying stageproduction performanceegg quality
万方数据
维普
