Influence of Canola and Sunflower Diet Amendments on Cattle Feedlot Manure

Hao, Xiying; Mir, P. S.; Shah, M. A.; Travis, Greg R.

doi:10.2134/jeq2004.0455

Cited by 14 publications

(11 citation statements)

References 39 publications

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“…Manure VFAs were dominated by acetic, propionic, and butyric acids, which together accounted for about 95% of TVFA. This was in agreement with previous findings (McGinn et al, 2002;Hao et al 2005Hao et al , 2009). Valeric acid concentrations were significantly lower for bedded than nonbedded pens in June and July (p < 0.05).…”

Section: Background Weather Informationsupporting

confidence: 94%

Effects of pen bedding and feeding high crude protein diets on manure composition and greenhouse gas emissions from a feedlot pen surface

Borhan

Gautam

Engel

et al. 2013

Journal of the Air & Waste Management Association

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Greenhouse gas (GHG) emissions from concentrated animal feeding operations vary by stage of production and management practices. The objective of this research was to study the effect of two dietary crude protein levels (12 and 16%) fed to beef steers in pens with or without corn stover bedding. Manure characteristics and GHG emissions were measured from feedlot pen surfaces. Sixteen equal-sized feedlot pens (19 Â 23 m) were used. Eight were bedded approximately twice a week with corn stover and the remaining eight feedlot pens were not bedded. Angus steers (n ¼ 138) were blocked by live weights (lighter and heavier) with 7 to 10 animals per pen. The trial was a 2 Â 2 factorial design with factors of two protein levels and two bedding types (bedding vs. non bedding), with four replicates. The study was conducted from June through September and consisted of four~28-day periods. Manure from each pen was scrapped once every 28 days and composite manure samples from each pen were collected. Air samples from pen surfaces were sampled in Tedlar bags using a Vac-U-Chamber coupled with a portable wind tunnel and analyzed with a greenhouse gas gas chromatograph within 24 hr of sampling. The manure samples were analyzed for crude protein (CP), total nitrogen (TN), ammonia (NH 3 ), total volatile fatty acid (TVFA), total carbon (TC), total phosphorus (TP), and potassium (K). The air samples were analyzed for methane (CH 4 ), carbon dioxide (CO 2 ), and nitrous oxide (N 2 O) concentrations. The concentration of TN was significantly higher (p < 0.05) in manure from pens with cattle fed the high protein diets. The volatile fatty acids (VFAs) such as acetic, propionic, isobutyric, butyric, isovaleric, and valeric acids concentrations were similar across both treatments. There were no significant differences in pen surface GHG emissions across manure management and dietary crude protein levels.Implications: Livestock manure produces odor and emits GHGs (CO 2 , CH 4 , and N 2 O) at different stages of production and management practices that have significant environmental concerns. Thus, it is important to measure GHG contributions from different sources and develop appropriate mitigation strategies for minimizing GHG contribution from livestock production facilities. Two dietary protein levels (12 and 16%) fed to beef steers in pens with or without corn stover bedding were studied. The results indicated that dietary protein levels and bedding vs. no bedding had very little effect on GHG emissions and manure composition under open feedlot conditions in North Dakota climatic conditions and management practices. IntroductionThe overall gaseous emissions from concentrated livestock operations vary by animal type and growth stage due to different diets, daily feed intake, quality of diet, and feed conversion mechanism. In the U.S., total greenhouse gases (GHG) including methane emissions from agricultural sources (livestock production, agricultural soils, and rice production) were estimated to be approximately 500 metric tons CO 2 e...

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Section: Background Weather Informationsupporting

confidence: 94%

Effects of pen bedding and feeding high crude protein diets on manure composition and greenhouse gas emissions from a feedlot pen surface

Borhan

Gautam

Engel

et al. 2013

Journal of the Air & Waste Management Association

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“…This has led to increased availability and use of dried distillers' grains with solubles (DDGS) as a livestock feed (Berger and Good 2007;Klopfenstein et al 2007). With the nitrogen content in DDGS approximately two to three times that of unprocessed grain (Spiehs et al 2002;Widyaratne and Zijlstra 2007), adding DDGS to livestock diets could potentially change the manure pH, N form and content, and C/N ratio, given that these properties are influenced by diet (Hao et al 2005b;Velthof et al 2005;Yan et al 2006;Maguire et al 2007;Hao et al 2009). Hao et al (2009) reported increases in manure pH, NH 4 ?…”

Section: Introductionmentioning

confidence: 99%

Greenhouse gas emissions when composting manure from cattle fed wheat dried distillers’ grains with solubles

Hao

Benke

Larney

et al. 2010

Nutr Cycl Agroecosyst

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Dried distillers' grains with solubles (DDGS) are a co-product of ethanol production that is increasingly available for use as a livestock feed. Including DDGS in diets could affect animal manure properties and impact manure management strategies. The objectives of this study were to investigate changes in the rate of greenhouse gas (GHG) emissions during composting and final properties of manure compost when DDGS is included in feedlot cattle diets. Treatments were: (1) Control; manure from cattle fed a typical finishing diet containing barley (Hordeum vulgare L.) grain and silage and (2) DDGS; manure from cattle fed a finishing diet with 60% DDGS from wheat (Triticum aestivum L.) in the dietary ration. Manure, consisting of feces, urine and wood shavings, was composted in open windrows. Samples were collected for analysis at initiation and completion of composting. Greenhouse gas surface fluxes were collected weekly during the first 4 weeks and every 2-3 weeks for the remainder of the composting period. The DDGS compost had lower total C, but similar total N (TN) content relative to Control, reflecting the initial manure conditions. The DDGS compost also had higher moisture, higher water-extractable NH 4 ? and NO 3 -, a greater fraction of TN in available form, and a lower pH than the Control. The O 2 consumption and N 2 O emission from DDGS compost were higher, whereas CO 2 and CH 4 emissions were similar to Control. The higher N 2 O emissions from DDGS compost were likely related to the high water-extractable N content in DDGS manure. Increased use of DDGS in feedlot diets may have environmental repercussions that include greater emissions of GHG (N 2 O) during manure composting. From an end user perspective, enhanced availability of N could increase the nutrient value of the compost for crop production.

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“…The plant nutrient content in livestock manure is influenced by the composition of livestock diets (Hao et al, 2005, 2009). Changing cattle feedlot diets by increasing the use of dried distillers’ grain with solubles (DDGS), a co‐product from the ethanol fuel industry, can increase N and P levels in manure and compost (Hao et al, 2009, 2011) and the potential for leaching losses following land application.…”

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confidence: 99%

Co-composting of Beef Cattle Feedlot Manure with Construction and Demolition Waste

et al. 2014

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With increased availability of dried distillers' grains with solubles (DDGS) as cattle feed and the need to recycle organic wastes, this research investigated the feasibility of co-composting DDGS cattle feedlot manure with construction and demolition (C&D) waste. Manure was collected from cattle fed a typical western Canadian finishing diet (CK) of 860 g rolled barley ( L.) grain, 100 g barley silage, and 40 g vitamin and mineral supplement kg dry matter (DM) and from cattle fed the same diet but (DG manure) with 300 g kg DM barley grain being replaced by DDGS. The CK and DG manures were co-composted with and without C&D waste in 13 m bins. Compost materials were turned on Days 14, 37, and 64, and terminated on Day 99. Adding C&D waste led to higher compost temperatures (0.4 to 16.3°C, average 7.2°C) than manure alone. Final composts had similar total C, total N, C/N ratios, and water-extractable K, Mg, and NO content across all treatments. However, adding C&D waste increased δC, δN, water-extractable SO, and Ca contents and decreased pH, total P (TP), water-extractable C, N, and P and most volatile fatty acids (VFA). The higher C&D compost temperatures should reduce pathogens while reduced VFA content should reduce odors. When using the final compost product, the increased SO and reduced TP and available N and P content in C&D waste compost should be taken into consideration. Increased S content in C&D compost may be beneficial for some crops grown on S-deficient soils.

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Influence of Canola and Sunflower Diet Amendments on Cattle Feedlot Manure

Cited by 14 publications

References 39 publications

Effects of pen bedding and feeding high crude protein diets on manure composition and greenhouse gas emissions from a feedlot pen surface

Effects of pen bedding and feeding high crude protein diets on manure composition and greenhouse gas emissions from a feedlot pen surface

Greenhouse gas emissions when composting manure from cattle fed wheat dried distillers’ grains with solubles

Co-composting of Beef Cattle Feedlot Manure with Construction and Demolition Waste

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