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
 Soil and Water Management Research: St. Paul, MN
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                                    Software
                People

                    Staff Listing
                                    CareersSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Midwest Area St. Paul, Minnesota Soil and Water Management 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
                                            LEE, C - Pennsylvania State Universityitem
                                            HRISTOV, A - Pennsylvania State Universityitem
                                            Dell, Curtisitem
                                            Feyereisen, Garyitem
                                            KAYE, J - Pennsylvania State Universityitem
                                            BEEGLE, D - Pennsylvania State University
  Submitted to: Meeting Abstract
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 2/14/2010
                                    Publication  Date: 7/11/2010
                                    Citation: Lee, C., Hristov, A.N., Dell, C.J., Feyereisen, G.W., Kaye, J., Beegle, D. 2010. Effect of Dietary Protein on Ammonia Emission from Dairy Manure [abstract]. American Dairy Science Association Meeting Abstract. 93:690.Interpretive Summary:
                                Technical Abstract: The objective of this experiment was to investigate the effect of dietary crude protein concentration on ammonia (NH3) volatilization from dairy cow manure. Two types of manure were prepared by feeding lactating dairy cows diets with 16% (DM basis; HighCP) or 14% CP (LowCP). The manure was used in 2 experiments.  In Exp. 1, 400 g of each manure (1.7:1.0, feces:urine) were placed in sealed steady-state flux chambers connected to a photoacoustic infrared gas analyzer and incubated for 5 d at 25°C in duplicate to measure the NH3 emitting potential of manure. Ammonia emission rates were 202 and 132 (mg/h; P < 0.001) for HighCP and LowCP manure, respectively. Cumulative NH3 emission was 45% less (P < 0.001) for LowCP compared with HighCP manure. In Exp. 2, LowCP and HighCP manure was applied to 61 × 61 × 61 cm lysimeters collected from a Hagerstown silt loam (fine, mixed, mesic Typic Hapludalf) in a complete randomized design. Manure was applied to each lysimeter immediately after mixing feces and urine (as in Exp. 1). The application rate was 9.3 g of N/lysimeter, corresponding to a field application rate of 300 kg N/ha. The HighCP manure had higher N content (4.4 vs. 2.8%, DM basis) and proportion of ammonium and urea-N in total manure N (51.4 vs. 30.5%) than the LowCP manure. As a result, more LowCP than HighCP manure (2.36 vs. 1.65 kg) was applied to each lysimeter. After manure application, NH3 emissions were measured using a photoacoustic infrared gas analyzer at 3, 8, 23, 28, 50 and 100 h. Ammonia emission was greater (P < 0.05) from HighCP- than from LowCP-manure amended soil. The area under the cumulative (100 h) NH3 emission curve for HighCP was smaller than the area for LowCP manure (56.8 and 114.8 mg NH3/m2/min × h, respectively). In conclusion, manure from dairy cows fed a 14% CP diet had decreased NH3 emitting potential and resulted in 50% lower ammonia emission when applied to soil, compared to manure from cows fed a 16% CP diet.


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