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
 Livestock Issues Research: Lubbock, TX
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                People

                    Staff Listing
                                    Careers


        


                    NewsletterSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Plains Area Lubbock, Texas Cropping Systems Research Laboratory Livestock Issues Research Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications

Title:   Author  item
                                            Carroll, Jeffery

                                                         - *Jeff Carroll*item
                                            Collier, Chaditem
                                            Hulbert, Lindseyitem
                                            CORLEY, JIMMIE - Lesaffre Yeastitem
                                            ESTEFAN, ANTONIO - Lesaffre Yeastitem
                                            FINCK, DEREK - Texas Tech Universityitem
                                            JOHNSON, BRAD - Texas Tech University
  Submitted to: Journal of Animal Science Supplement
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 7/11/2010
                                    Publication  Date: 10/11/2010
                                    Citation: Carroll, J.A., Collier, C.T., Hulbert, L.E., Corley, J., Estefan, A., Finck, D., Johnson, B. 2010. Yeast supplementation alters the health status of receiving cattle [abstract]. 2010 American Society of Animal Science Meeting, July 11-15, 2010, Denver, CO. Journal of Animal Science. 88(E-Supplement 2):T24.Interpretive Summary:
                                Technical Abstract: Our objective was to determine if supplementation of yeast products during the receiving phase would improve the health status of beef calves prior to and following a low-dose LPS (0.25 micrograms/kg BW) challenge. Twenty-four crossbred calves (203 ± 1.45 kg BW) were blocked by BW and assigned to 1 of 4 dietary treatments for 38 d prior to LPS exposure: 1) Control (Cont) calves fed an 83% concentrate diet; 2) Live Yeast (LY), calves fed the control diet with the addition of a LY; 3) Yeast Cell Wall (YCW), calves fed the control diet with the addition of a YCW product; and 4) LY plus YCW (LY/YCW). Calves on a common ration were group penned, and diets containing the yeast products were formulated to deliver 5 g/hd/d of either LY or YCW or 10 g/hd/d of the LY/YCW combination. On d38, calves were fitted with jugular catheters and indwelling rectal probes, and moved to individual stanchions. On d39, blood samples were collected at 30-min intervals from -2 to 8 h post-LPS and then at 24 h relative to LPS challenge at time 0. Rectal temperatures (RT) were collected at 1-min intervals from -24 to 24 h post-LPS challenge. During the entire trial, basal RT prior to LPS tended (P less than or equal to 0.06) to differ among groups with Cont calves having higher RT compared to LY/YCW (P less than or equal to 0.01) and LY (P less than or equal to 0.04) calves. After the LPS challenge, an interaction (P less than or equal to 0.05) was observed such that RT remained higher in the Cont calves compared to all other groups. By 10 h post-LPS, RT were still greater (P less than or equal to 0.05) in Cont calves compared to all other calves, and remained numerically higher throughout the study. Serum cortisol increased in all groups post-LPS with peak concentrations observed at 1 h. At 1 h post-LPS, serum cortisol concentrations were 26.5 ng/mL greater (P less than or equal to 0.04) in Cont calves compared to LY/YCW calves. An interaction (P less than or equal to 0.01) was observed for serum interferon-gamma (IFN) such that IFN concentrations tended (P less than or equal to 0.06) to be greater in Cont calves compared to YCW calves prior to LPS exposure. These data indicate that supplementing the diet of receiving beef cattle with yeast products may improve their health during the early phase of the feedlot period, thus allowing for enhanced performance.


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