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
 Northern Great Plains Research Laboratory: Mandan, ND
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                                    Software
                People

                    Staff Listing
                                    Careers


        


                    Employment
                        Work With Us
                                    ARS Vacancies at USDAJOBS
                    Local News
                        INTEGRATOR
                                    Bottom Line Ag SummitSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Plains Area Mandan, North Dakota Northern Great Plains Research Laboratory 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
- IACUC Executive Minutes

Title:   Author  item
                                            Kronberg, Scott
  Submitted to: Meeting Abstract
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 2/28/2006
                                    Publication  Date: 6/5/2006
                                    Citation: Kronberg, S.L. 2006. Condensed tannin in drinking water of cattle and sheep to reduce their urine urea excretion and subsequent ammonia pollution. Meeting Abstract. Proc. Workshop Agric. Air Qual. 1:835-837.Interpretive Summary:
                                Technical Abstract: Methods are needed to reduce urine urea excretion and consequent ammonia emission that is associated with ruminant meat and milk production while not reducing productivity.  Ingestion of small amounts of naturally-occurring condensed tannin by ruminants can reduce their urine urea excretion and improve their productivity.  However, providing grazing ruminants with pasture forages such as birdsfoot trefoil (Lotus corniculatus) that contain condensed tannin is problematic.  Therefore, I have conducted trials to determine if sheep and cattle will readily drink water containing small amounts of condensed tannin and found that they will.  This paper reports results of a trial with a latin-square design where four wether sheep (mean body weight 64.8 kg with 5.4 SD) were fed alfalfa pellets (3.5% nitrogen) and given tap water or tap water with low (0.5% of daily dry matter intake (DDMI)), medium (1.0% of DDMI) or high (1.5% of DDMI) amounts of quebracho tannin (QT) in it and their urine urea excretion was measured.  There was a linear effect of QT intake on daily urine urea excretion as a percentage of nitrogen intake (P = 0.03).  Ingestion of water containing the low, medium and high levels of QT resulted in reductions in daily urea excretion as a percentage of nitrogen intake of 3.5, 6.6, and 12.6%, respectively.  Results from my other studies indicate that even greater reductions in urine urea output may be possible by placing small amounts of condensed tannin in the drinking water of cattle and sheep.  This can likely be done while maintaining or improving their productivity.


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