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

2017 ◽  
Vol 96 (5) ◽  
pp. 1280-1289 ◽  
Author(s):  
J.R. Guo ◽  
X.F. Dong ◽  
S. Liu ◽  
J.M. Tong
Keyword(s):  
Bacillus Subtilis ◽  
Laying Hens ◽  
Egg Quality ◽  
Cecal Microbiota

scholarly journals Effects of Three Strains of Bacillus subtilis Supplemented to Diets on Egg Quality, Intestinal Microflora and Tibia in The Late Stage of Laying Hens

2010 ◽  
Vol 52 (5) ◽  
pp. 389-398 ◽  
Author(s):  
Wan-Seob Lee ◽  
Bo-Keun Lee ◽  
Jea-Young Kim ◽  
Ji-Sook Kim ◽  
So-Yeon Lee ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Late Stage ◽  
Intestinal Microflora ◽  
Laying Hens ◽  
Egg Quality

scholarly journals Long-term effects of choline on productive performance and egg quality of brown-egg laying hens

2013 ◽  
Vol 92 (7) ◽  
pp. 1824-1829 ◽  
Author(s):  
Q.H. Zhai ◽  
X.F. Dong ◽  
J.M. Tong ◽  
Y.M. Guo ◽  
Y.E. Bao
Keyword(s):  
Laying Hens ◽  
Egg Quality ◽  
Egg Laying ◽  
Productive Performance ◽  
Long Term Effects

Effects of dietary Bacillus subtilis RX7 and B2A supplementation on productive performance, egg quality, blood profiles, and excreta Salmonella counts in laying hens

2020 ◽  
Vol 100 (3) ◽  
pp. 411-417
Author(s):  
Huan Shi ◽  
Wan Lin Zhang ◽  
In Ho Kim
Keyword(s):  
Bacillus Subtilis ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Basal Diet ◽  
Productive Performance ◽  
Blood Profile ◽  
Colony Forming Units ◽  
Dietary Treatments ◽  
Blood Profiles

An experiment was carried out to investigate the effect of Bacillus subtilis RX7 and B2A supplementation on egg production, egg quality, blood profile, and excreta Salmonella population in laying hens. A total of 192 Hy-Line Brown laying hens (40-wk-old) were randomly assigned into four dietary treatments, each of which was replicated eight times with six hens per replicate in a 5 wk trial. The dietary treatments were NC, which is a basal diet without antibiotics or Bacillus subtilis; PC, which is an NC + 0.5 g kg−1 antibiotic (virginiamycin) diet; BSR, which is an NC + 0.5 g kg−1 Bacillus subtilis RX7 (1.0 × 109 colony forming units g−1); and BSB, which is an NC + 0.5 g kg−1 Bacillus subtilis B2A (1.0 × 109 colony forming units g−1). The results showed that hens receiving BSB diets had increased (P < 0.05) eggshell thickness over hens fed the NC, PC, and BSR diets (week 3). The excreta Salmonella counts in the PC, BSR, and BSB groups were lower than the NC group (P < 0.05). These results indicate that dietary inclusion of Bacillus subtilis RX7 and B2A strains effectively decreased excreta Salmonella counts without any detrimental effects on the performance of laying hens.

scholarly journals Modulatory Effects of Bacillus subtilis on the Performance, Morphology, Cecal Microbiota and Gut Barrier Function of Laying Hens

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1523
Author(s):  
Guangzhi Zhang ◽  
Hao Wang ◽  
Jianwei Zhang ◽  
Xinming Tang ◽  
Abdul Raheem ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Tight Junction ◽  
Barrier Function ◽  
Egg Production ◽  
Laying Hens ◽  
Basal Diet ◽  
Tight Junction Protein ◽  
Treatment Groups ◽  
Junction Protein ◽  
Cecal Microbiota

We investigated the efficacy of a single bacterium strain, Bacillus subtilis (B. subtilis) YW1, on the performance, morphology, cecal microbiota, and intestinal barrier function of laying hens. A total of 216 28-week-old Hy-line Brown laying hens were divided into three dietary treatment groups, with six replicates of 12 birds each for 4 weeks. The control group (Ctr) was fed a basal diet and the treatment groups, T1 and T2, were fed a basal diet supplemented with B. subtilis at a dose rate of 5 × 108 CFU/kg and 2.5 × 109 CFU/kg, respectively. Dietary supplementation with B. subtilis did not significantly affect overall egg production in both groups, with no obvious changes in average egg weight and intestine morphology. B. subtilis administration also improved the physical barrier function of the intestine by inducing significantly greater expression levels of the tight junction protein occludin in T1 (p = 0.07) and T2 (p < 0.05). Further, supplementation with B. subtilis effectively modulated the cecal microbiota, increasing the relative level of beneficial bacteria at the genus level (e.g., Bifidobacterium p < 0.05, Lactobacillus p = 0.298, Bacillus p = 0.550) and decreasing the level of potential pathogens (e.g., Fusobacterium p < 0.05, Staphylococcus p < 0.05, Campylobacter p = 0.298). Overall, B. subtilis YW1 supplementation cannot significantly improve the egg production; however, it modulated the cecal microbiota towards a healthier pattern and promoted the mRNA expression of the tight junction protein occludin in laying hens, making B. subtilis YW1 a good probiotic candidate for application in the poultry industry, and further expanding the resources of strains of animal probiotics.

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