Evaluation of methane production manipulated by level of intake in growing cattle and corn oil in finishing cattle

Winders, Tommy M.; Boyd, Bradley M; Hilscher, F. Henry; Stowell, Richard R.; Fernando, Samodha C.; Erickson, Galen E.

doi:10.1093/tas/txaa186

Cited by 4 publications

(4 citation statements)

References 24 publications

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“…Moles of hexose fermented in the rumen were estimated from digestible carbohydrate intake using digestibility values [43]. Methane and carbon dioxide were expressed per unit of intake (grams per kilogram of DMI) and per kg of average daily gain (grams per g/kg of ADG; [44]).…”

Section: Methodsmentioning

confidence: 99%

Evaluation of Increasing Dietary Concentrations of a Multi-Enzyme Complex in Feedlot Lambs’ Rations

Mendoza-Martínez,

Hernández-García,

Díaz-Galván

et al. 2024

Animals

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The objective of this study was to evaluate the effects of increasing levels of the M-E complex (xylanase, glucanase, cellulase, and invertase) Optimax E® on the performance of growing lambs, their digestibility, and their rumen microbiota, and to estimate NEm, NEg, and ruminal methane levels. Forty lambs (Katahdin x Dorset; 22.91 ± 4.16 kg) were randomly assigned to dietary concentrations of ME (0, 0.2, 0.4, and 0.8% DM) and fed individually for 77 days. Increasing M-E improved feed conversion (p < 0.05) as well as NEm and NEg (p < 0.05), which were associated with increased in vivo DM and NDF digestion (linear and quadratic p < 0.01). Few microbial families showed abundancy changes (Erysipelotrichaceae, Christensenellaceae, Lentisphaerae, and Clostridial Family XIII); however, the dominant phylum Bacteroidetes was linearly reduced, while Firmicutes increased (p < 0.01), resulting in a greater Firmicutes-to-Bacteroidetes ratio. Total Entodinium showed a quadratic response (p < 0.10), increasing its abundancy as the enzyme dose was augmented. The daily emission intensity of methane (per kg of DMI or AGD) was reduced linearly (p < 0.01). In conclusion, adding the M-E complex Optimax E® to growing lambs’ diets improves their productive performance by acting synergistically with the rumen microbiota, modifying the Firmicutes-to-Bacteroidetes ratio toward more efficient fermentation, and shows the potential to reduce the intensity of greenhouse gas emissions from lambs.

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Section: Methodsmentioning

confidence: 99%

Evaluation of Increasing Dietary Concentrations of a Multi-Enzyme Complex in Feedlot Lambs’ Rations

Mendoza-Martínez,

Hernández-García,

Díaz-Galván

et al. 2024

Animals

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“…The UNL ENREEC emission barn, equipped with a negative pressure system to monitor and record CH 4 and CO 2 production, was utilized for 8 consecutive weeks to monitor emissions from growing steers, followed by an additional 8 consecutive weeks to monitor emissions from finishing steers. The emission barn, as described by Winders et al (2020) , has 2 isolated pens (no emission cross-over) and operates using two air sensors, the LI-COR 7500 and LI-COR 7700 (LI-COR, Lincoln, NE) to monitor CO 2 and CH 4 , respectively. Eight pens of cattle, 4 control, and 4 biochar, were selected randomly to rotate through the methane barn by pairing replications within BW block, representing 1, 2, and 1 rep from light, middle, and heavy block, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…During the growing experiment, 6 d (out of 40 total) were not usable for emissions measurement due to complications with the barn sensor recording. Concentrations of CO 2 and CH 4 reached greater than 60 ppm at certain points throughout the day, which may be beyond the capacity of the sensor for accurate measurement ( Winders et al, 2020 ). Unexpectedly high concentrations of CO 2 and CH 4 in the growing experiment were due to housing 10 steers per chamber and the high inclusion of low-quality forage in the diet.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of the effects of pine-sourced biochar on cattle performance and methane and carbon dioxide production from growing and finishing steers

Sperber

Troyer

Erickson

et al. 2022

Translational Animal Science

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A feedlot growing (77-d) and finishing (111-d) experiment was conducted to evaluate the effects of feeding biochar on steer performance, methane and carbon dioxide emissions, and carcass characteristics. Two treatments were evaluated, a control diet without biochar and the same diet with biochar included at 0.8% of dietary DM (growing) or 1.0% of dietary DM (finishing). The growing diet consisted of 40% corn silage, 40% wheat straw, 15% modified distillers grains plus solubles, and 5% supplement, with 0.8% biochar replacing fine ground corn in supplement. The finishing diet consisted of 55% high-moisture corn (HMC), 35% Sweet Bran, 5% wheat straw, and 5% supplement, with biochar replacing 1.0% HMC and added as an ingredient. Biochar was sourced from ponderosa pine wood waste (High Plains Biochar, Laramie, WY) and was 83% C with 426 m 2/g surface area for both experiments. Crossbred steers were utilized in the growing (n = 160; initial BW = 363 kg; SD = 16 kg) and finishing (n = 128; initial BW = 480 kg; SD = 17 kg) experiments, blocked by BW, and assigned randomly to 16 pens. Pens were assigned randomly to one of two treatments (biochar vs. control) with eight replications per treatment. Four pen replications per treatment were paired within BW block and rotated randomly through an emissions barn with two chambers (each treatment was evaluated simultaneously and for two rotations) to capture average weekly emissions of CH4 and CO2. Pen was the experimental unit and chamber was included as a fixed effect for emissions data. There were no statistical differences (P ≥ 0.23) in performance outcomes between treatments for the growing experiment. Dry matter intake (DMI; P < 0.01) and average daily gain (ADG; P = 0.02) were 2.2 and 5.9% lower for biochar-fed steers in the finishing experiment, respectively, resulting in a lighter hot carcass weight (P = 0.10) and lower calculated USDA yield grade (P = 0.02). Emissions of CH4 and CO2 were not affected by biochar inclusion in the growing (P ≥ 0.22) or finishing experiment (P ≥ 0.60). Results from these experiments show no indication that feeding biochar, supplemented at 0.8% (growing) and 1.0% (finishing) of the diet DM, reduces methane emissions in growing or finishing cattle.

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“…Restriction to 85% of ad libitum intake for 28, 42, or 84 d followed by ad libitum feeding to yield a total of 84 d on feed did not affect digestibility of dry matter, and fecal phosphorus excretion measured near the end of the feeding period was decreased only for the 84-d restriction. A 75% restriction of a grower diet based on alfalfa, sorghum silage, and modified distillers grains plus solubles decreased absolute CH 4 production (g/d), but did not affect CH 4 production per unit of DMI [32]. Although the environmental effects of restricted (and programmed) feeding systems can be estimated from feed intake data and assumptions about digestibility, more direct experimentation to measure the digestibility of nutrients and CH 4 emissions would be beneficial.…”

Section: Production Responses With Restricted Feedingmentioning

confidence: 99%

Feeding Management Strategies to Mitigate Methane and Improve Production Efficiency in Feedlot Cattle

Galyean

Hales

2023

Animals

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Mitigation of greenhouse gases and decreasing nutrient excretion have become increasingly important goals for the beef cattle industry. Because feed intake is a major driver of enteric CH4 production and nutrient excretion, feeding management systems could be important mitigation tools. Programmed feeding uses net energy equations to determine the feed required to yield a specific rate of gain, whereas restricted feeding typically involves decreasing intake relative to the expected or observed ad libitum intake. In the context of growing/finishing systems typical of those in the United States and Western Canada, experimental results with programmed and restricted feeding have often shown decreased overall feed intake and increased gain efficiency relative to ad libitum feeding, but too much restriction can negatively affect harvest weight and associated carcass quality. Slick feed bunk management is a time-based restriction that limits day-to-day variation in feed deliveries, but the effects on intake and performance are not well defined. Simulations to estimate enteric CH4 emission and nitrogen excretion indicated that programmed feeding of a high-grain diet could appreciably decrease CH4 emissions and nitrogen excretion compared with traditional growing programs based on high-forage diets. For feedlot finishing, programming gain for a portion of the feeding period will decrease CH4 emission and N excretion only if cattle perform better than expected during the programmed phase or if compensatory growth occurs when cattle are transitioned to ad libitum feeding. Optimal approaches to implement programmed or restricted feeding that will yield increased efficiency should be the subject of future research in this area.

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Evaluation of methane production manipulated by level of intake in growing cattle and corn oil in finishing cattle

Cited by 4 publications

References 24 publications

Evaluation of Increasing Dietary Concentrations of a Multi-Enzyme Complex in Feedlot Lambs’ Rations

Evaluation of Increasing Dietary Concentrations of a Multi-Enzyme Complex in Feedlot Lambs’ Rations

Evaluation of the effects of pine-sourced biochar on cattle performance and methane and carbon dioxide production from growing and finishing steers

Feeding Management Strategies to Mitigate Methane and Improve Production Efficiency in Feedlot Cattle

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