Abstract
Objective: TLRI 211-1 is a novel <i>Bacillus subtilis</i> strain. This experiment was to investigate dietary supplementation of TLRI 211-1 on laying performance, egg quality and blood characteristics of layers.Methods: One hundred and twenty 65-wk-old Leghorn layers were divided into four treatment groups for 8 weeks experiment. Each treatment had three replicates. The basal diet was formulated as control group with crude protein 17% and metabolizable energy 2,850 kcal/kg and supplemented with TLRI 211-1 0.1%, 0.3%, and commercial <i>Bacillus amyloliquefaciens</i> 0.1% as treatment 2, 3 and 4 groups, respectively. Both TLRI 211-1 and commercial <i>Bacillus amyloliquefaciens</i> were adjusted to contain 1×10<sup>9</sup> colony-forming unit (CFU)/mL (g), hence the 0.1% supplemental level was 1×10<sup>9</sup> CFU/kg.Results: The results showed that TLRI 211-1 0.3% and commercial <i>B. amyloliquefaciens</i> groups had higher weight gain than the other groups; TLRI 211-1 0.1% group had better feed to eggs conversion ratio than the control and commercial <i>B. amyloliquefaciens</i> groups (p<0.05). <i>Bacillus subtilis</i> supplementation increased yolk weight (p<0.05). In egg quality during storage, TLRI 211-1 0.1% had higher breaking strength than the control group at the second week of storage (p<0.05). At the third week of storage, TLRI 211-1 0.3% had higher Haugh unit (p<0.05). Hens fed diets supplemented with TLRI 211-1 0.3% significantly decreased blood triglyceride levels and increased blood calcium levels (p< 0.05). TLRI 211-1 0.3% group had lower H2S (p<0.05) and hence had less unpleasant odor in excreta of hens.Conclusion: In conclusion, supplementation with 0.1% TLRI 211-1 can significantly improve feed to eggs conversion ratio. TLRI 211-1 supplementation also can maintain eggs at their optimum quality level during storage. The study showed that <i>B. subtilis</i> TLRI 211-1 can be used as feed additives for improving egg production performance and egg quality.
Publisher
Asian Australasian Association of Animal Production Societies
Subject
General Veterinary,Genetics,Animal Science and Zoology,Physiology,Food Science
Cited by
1 articles.
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