U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 Food and Feed Safety Research: College Station, TX
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                People

                    Staff Listing
                                    CareersSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Plains Area College Station, Texas Southern Plains Agricultural Research Center Food and Feed Safety Research Research





- Swaggerty, Christina - Christi
- Food Safety, (Animal and Plant Products) (108)

Research Project: **Location:
                            Food and Feed Safety Research** Project Number: 3091-32000-037-069-T
                        
                        Project Type: Trust Fund Cooperative Agreement Start Date: Dec 13, 2023
                        
                        End Date: Jan 31, 2028 **Objective:**
                        
                        1. Determine if continual feeding of an oregano-based feed additive reduces Salmonella invasion and/or colonization in young poultry. 
2. Determine if continual feeding of an oregano-based feed additive reduces Salmonella colonization in slaughter-aged broilers.  
3. Determine if continual feeding of an oregano-based supplement accompanied by water treatment during the finishing time reduces Salmonella colonization in slaughter-aged broilers. **Approach:**
                        
                        1. Determine if continual feeding of an oregano-based feed additive (0 and 300 g/ton) reduces Salmonella invasion and/or colonization in young poultry. All oregano supplementation will be in the form of powder mixed into the feed. At placement, all chicks will be provided the same starter diet with no feed additive. On Day 4, chicks will be placed on their assigned dietary treatment followed by a challenge with Salmonella enterica serovar Enteritidis on day 7. On days 11 and 21 chicks will be weighed, bled, and humanely euthanized and necropsied where the liver and ceca will be removed and enriched for Salmonella;cecal content will be analyzed for Salmonella enumeration, and various tissue samples collected, and flash frozen for future immunological studies.  
2. Determine if continual feeding of an oregano-based feed additive reduces Salmonella colonization in slaughter-aged broilers. At placement, all chicks will be provided the same starter diet with no feed additive. The supplement will be in the form of powder mixed into the feed and provided at growth promoting dose (150 g/ton) from days 4-33 and at therapeutic dose (300 g/ton) from days 33-42. On Day 4, chicks will be placed on their assigned dietary treatment and challenged with Salmonella enterica serovar Enteritidis. The birds will be provided starter rations on days 4-14 birds (0 or 150 g/ton), followed by a grower diet (0 or 150 g/ton) from days 14-32, and lastly a finisher diet from days 32-42 with a higher level of supplementation (0 or 300 g/ton) to target and eliminate any remaining Salmonella. On day 42 birds will be weighed, bled, and humanely euthanized and necropsied where the liver and ceca will be removed and enriched for Salmonella; cecal content will be analyzed for Salmonella enumeration, and various tissue samples collected, and flash frozen for future immunological studies.  
3. Determine if continual feeding of an oregano-based supplement accompanied by water treatment during the finishing time reduces Salmonella colonization in slaughter-aged broilers. At placement, all chicks will be provided the same starter diet with no feed additive. On Day 4, chicks will be placed on their assigned dietary treatment and challenged with Salmonella enterica serovar Enteritidis. The supplement will be in the form of powder mixed into the feed and provided at growth promoting dose (150 g/ton) from days 4-42 and in the water (6 oz/gal) days 33-42. The birds will be provided starter rations on days 4-14 birds (0 or 150 g/ton), followed by a grower diet (0 or 150 g/ton) from days 14-32, and lastly a finisher diet from days 32-42 (0 or 150 g/ton) with additional treatment provided in the drinking water (0 or 6 oz/gal) to target and eliminate any remaining Salmonella. On day 42 birds will be weighed, bled, and humanely euthanized and necropsied.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov