Effects of long-term Bacillus subtilis CGMCC 1.921 supplementation on performance, egg quality, and fecal and cecal microbiota of laying hens

This study evaluated the effects of long-term Bacillus subtilis CGMCC 1.921 supplementation on the performance, egg quality, and fecal/cecal microbiota of laying hens. A total of 360 28-week-old Hy-Line Brown laying hens were randomly allocated into 5 treatments with 6 replicates of 12 birds each fo...

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Bibliographic Details
Published in:Poultry science 2017-05, Vol.96 (5), p.1280-1289
Main Authors: Guo, J R, Dong, X F, Liu, S, Tong, J M
Format: Article
Language:English
Subjects:
Animal Feed - analysis
Animal Nutritional Physiological Phenomena
Animals
Bacillus subtilis
Cecum - microbiology
Chickens - microbiology
Chickens - physiology
Diet - veterinary
Dietary Supplements
Egg Shell
Eggs - standards
Feces - microbiology
Female
Oviposition
Probiotics
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Summary:This study evaluated the effects of long-term Bacillus subtilis CGMCC 1.921 supplementation on the performance, egg quality, and fecal/cecal microbiota of laying hens. A total of 360 28-week-old Hy-Line Brown laying hens were randomly allocated into 5 treatments with 6 replicates of 12 birds each for 24 weeks. The experimental treatments included a basal diet without additions (Con) and the basal diet supplemented with 1.0 × 105 (B1), 1.0 × 106 (B2), 1.0 × 107 (B3), and 1.0 × 108 (B4) cfu/g B. subtilis CGMCC 1.921. The results showed that feed:egg ratio significantly decreased (P  0.05) among treatments. Eggshell strength significantly improved (P
ISSN:0032-5791
1525-3171
DOI:10.3382/ps/pew389