Effect of Bacillus subtilis and Bacillus licheniformis probiotic supplementation on cecal Salmonella load in broilers challenged with salmonella
| Autor: | Revathi Shanmugasundaram, Ramesh K Selvaraj, Todd J. Applegate |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Salmonella
lcsh:TP368-456 Inoculation Broiler Bacillus Salmonella infection Bacillus subtilis Biology biology.organism_classification medicine.disease medicine.disease_cause Salmonella enterica serovar enteritidis law.invention food safety lcsh:Food processing and manufacture Probiotic Animal science law medicine Animal Science and Zoology lcsh:Animal culture Bacillus licheniformis probiotic lcsh:SF1-1100 |
| Zdroj: | Journal of Applied Poultry Research, Vol 29, Iss 4, Pp 808-816 (2020) |
| ISSN: | 1056-6171 |
| DOI: | 10.1016/j.japr.2020.07.003 |
| Popis: | Summary: The overall objective in this study is to determine the effects of Bacillus subtilis and Bacillus licheniformis probiotic supplementation on performance and cecal Salmonella load in broilers challenged with Salmonella enterica serovar enteritidis. A total of 360 one-day-old broiler chicks were randomly distributed to 4 experimental groups in a 2 × 2 factorial setup of treatments: control, control + challenge, probiotics (10 mg/kg feed of B. subtilis strain HU58; HU58 plus 100 mg/kg feed of B. licheniformis SC307; Prepro; Microbiome Labs, Saint Augustine, FL), and probiotics + challenge. Each treatment was replicated in 6 pens (n = 6) with 15 chicks per pen. At 21 d of age, all birds in the challenge groups were inoculated orally with 250 μL of 1 × 109 cfu S. enteritidis. At 42 d of age, birds in the control + challenge group had 180-g decrease, whereas birds in the probiotic + challenge groups had only 40-g decrease in the BW gain, compared with the control group. At 28 d of age, birds in the control + challenge group had 220-g decrease, whereas birds in the probiotic + challenge groups had only 140-g decrease in feed consumption compared with that in the control group. Birds in the probiotic + challenge group had 0.73, 1.59, and 1.32 log decrease in Salmonella cfu/g of cecal contents at 5, 12, and 21 d after Salmonella infection, compared with the challenge group. Birds in the challenge group had higher (P |
| Databáze: | OpenAIRE |
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