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Elizabeth Ross
Department of Animal Science, University of California, Davis, 1 Shields Ave, Davis, CA 95616-8521, USA

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Journal article
Published: 11 May 2021 in Sustainability
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The objective of the present study was to mitigate ammonia (NH3), greenhouse gases (GHGs), and other air pollutants from lactating dairy cattle waste using different freestall management techniques. For the present study, cows were housed in an environmental chamber from which waste was removed by either flushing or scraping at two different frequencies. The four treatments used were (1) flushing three times a day (F3), (2) flushing six times a day (F6), (3) scraping three times a day (S3), and (4) scraping six times a day (S6). Flushing freestall lanes to remove manure while cows are out of the barn during milking is an industry standard in California. Gas emissions were measured with a mobile agricultural air quality lab connected to the environmental chamber. Ammonia and hydrogen sulfide (H2S) emissions were decreased (p < 0.001 and p < 0.05) in the flushing vs. scraping treatments, respectively. Scraping increased NH3 emissions by 175 and 152% for S3 and S6, respectively vs. F3. Ethanol (EtOH) emissions were increased (p < 0.001) when the frequency of either scraping or flushing was increased from 3 to 6 times but were similar between scraping and flushing treatments. Methane emissions for the F3 vs. other treatments, were decreased (p < 0.001). Removal of dairy manure by scraping has the potential to increase gaseous emissions such as NH3 and GHGs.

ACS Style

Elizabeth Ross; Carlyn Peterson; Yongjing Zhao; Yuee Pan; Frank Mitloehner. Manure Flushing vs. Scraping in Dairy Freestall Lanes Reduces Gaseous Emissions. Sustainability 2021, 13, 5363 .

AMA Style

Elizabeth Ross, Carlyn Peterson, Yongjing Zhao, Yuee Pan, Frank Mitloehner. Manure Flushing vs. Scraping in Dairy Freestall Lanes Reduces Gaseous Emissions. Sustainability. 2021; 13 (10):5363.

Chicago/Turabian Style

Elizabeth Ross; Carlyn Peterson; Yongjing Zhao; Yuee Pan; Frank Mitloehner. 2021. "Manure Flushing vs. Scraping in Dairy Freestall Lanes Reduces Gaseous Emissions." Sustainability 13, no. 10: 5363.

Journal article
Published: 08 December 2020 in Sustainability
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Feed additives have received increasing attention as a viable means to reduce enteric emissions from ruminants, which contribute to total anthropogenic methane (CH4) emissions. The aim of this study was to investigate the efficacy of the commercial feed additive SOP STAR COW (SOP) to reduce enteric emissions from dairy cows and to assess potential impacts on milk production. Twenty cows were blocked by parity and days in milk and randomly assigned to one of two treatment groups (n = 10): supplemented with 8 g/day SOP STAR COW, and an unsupplemented control group. Enteric emissions were measured in individual head chambers over a 12-hour period, every 14 days for six weeks. SOP-treated cows over time showed a reduction in CH4 of 20.4% from day 14 to day 42 (P = 0.014), while protein % of the milk was increased (+4.9% from day 0 to day 14 (P = 0.036) and +6.5% from day 0 to day 42 (P = 0.002)). However, kg of milk protein remained similar within the SOP-treated cows over the trial period. The control and SOP-treated cows showed similar results for kg of milk fat and kg of milk protein produced per day. No differences in enteric emissions or milk parameters were detected between the control and SOP-treated cows on respective test days.

ACS Style

Elizabeth Ross; Carlyn Peterson; Angelica Carrazco; Samantha Werth; Yongjing Zhao; Yuee Pan; Edward DePeters; James Fadel; Marcello Chiodini; Lorenzo Poggianella; Frank Mitloehner. Effect of SOP “STAR COW” on Enteric Gaseous Emissions and Dairy Cattle Performance. Sustainability 2020, 12, 10250 .

AMA Style

Elizabeth Ross, Carlyn Peterson, Angelica Carrazco, Samantha Werth, Yongjing Zhao, Yuee Pan, Edward DePeters, James Fadel, Marcello Chiodini, Lorenzo Poggianella, Frank Mitloehner. Effect of SOP “STAR COW” on Enteric Gaseous Emissions and Dairy Cattle Performance. Sustainability. 2020; 12 (24):10250.

Chicago/Turabian Style

Elizabeth Ross; Carlyn Peterson; Angelica Carrazco; Samantha Werth; Yongjing Zhao; Yuee Pan; Edward DePeters; James Fadel; Marcello Chiodini; Lorenzo Poggianella; Frank Mitloehner. 2020. "Effect of SOP “STAR COW” on Enteric Gaseous Emissions and Dairy Cattle Performance." Sustainability 12, no. 24: 10250.