Dietary supplementation with calcium peroxide improves methane mitigation potential of finishing beef cattle
Calcium peroxide (CaO2) offers potential as an anti-methanogenic dietary feed material. The compound has been previously assessed in vitro, with methane (CH4) reductions of > 50% observed. The objective of this study was to assess dietary supplementation of CaO2 at different inclusion levels and...
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Elsevier
2024-11-01
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| author | E. Roskam D.A. Kenny A.K. Kelly V. O’Flaherty S.M. Waters |
| author_facet | E. Roskam D.A. Kenny A.K. Kelly V. O’Flaherty S.M. Waters |
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| description | Calcium peroxide (CaO2) offers potential as an anti-methanogenic dietary feed material. The compound has been previously assessed in vitro, with methane (CH4) reductions of > 50% observed. The objective of this study was to assess dietary supplementation of CaO2 at different inclusion levels and physical formats in a finishing beef system on the effects of animal performance, gaseous emissions, rumen fermentation parameters and digestibility. Seventy-two dairy-beef bulls (465 kg; 16 months of age) were randomly allocated to one of four treatments supplemented with CaO2; in a coarse ration (1) CON (0% CaO2), (2) LO (1.35% CaO2), (3) HI (2.25% CaO2), and in a pellet (4) HP (2.25% CaO2) (n = 18). Animals received their respective treatments for a 77 d finishing period, during which DM intake (American Calan Inc., Northwood, NH), average daily gain (ADG), feed efficiency and enteric emissions (GreenFeed emissions monitoring system; C-Lock Inc., Rapid City, SD) were measured. The finishing diet was isonitrogenous and isoenergetic across the four treatment groups, composed of 60:40 grass silage:concentrate. Silage was offered each morning (0900 h), and concentrates were offered twice daily (0800 and 1500 h). Supplementation of CaO2 had no effect on final weight (P = 0.09), ADG (P = 0.22) or feed efficiency (P = 0.13). Regarding DM intake, the HI treatment group consumed in the order of 1 kg less than CON (P < 0.01), while HP did not affect DM intake compared to CON (P = 0.79). Across treatments, DM intake ranged from 8.43 to 9.57 kg/d, equating to 1.6–1.8% of BW. Daily CH4 values for the control were 240 g/d, while CaO2 supplemented diets ranged from 202 to 170 g/d, resulting in daily CH4 reductions of 16, 29 and 27% for LO, HI and HP, respectively, compared to CON (P < 0.0001). Additionally, hydrogen was reduced in CaO2 supplemented animals by 32–36% relative to CON (P < 0.0001), with a simultaneous reduction in volatile fatty acid production (P < 0.01) and an increase in propionate concentration (P < 0.0001). Across all universally accepted CH4 metrics (yield, intensity, production), the dietary inclusion of CaO2 whether at a low or high rate, or indeed, through a coarse ration or pelleted format reduced CH4 in the order of 16–32%. This study also concluded that CaO2 can successfully endure the pelleting process, therefore, improving ease of delivery if implemented at farm level. |
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| institution | Kabale University |
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| spelling | doaj-art-73a10a14ccd14a6db8ef40afc71e61442024-11-16T05:10:27ZengElsevierAnimal1751-73112024-11-011811101340Dietary supplementation with calcium peroxide improves methane mitigation potential of finishing beef cattleE. Roskam0D.A. Kenny1A.K. Kelly2V. O’Flaherty3S.M. Waters4Animal and Bioscience Research Department, Teagasc Grange, Co. Meath C15PW93, Ireland; School of Biological and Chemical Sciences and Ryan Institute, University of Galway, Co. Galway H91TK33, IrelandAnimal and Bioscience Research Department, Teagasc Grange, Co. Meath C15PW93, Ireland; School of Agriculture and Food Science, University College Dublin, Co. Dublin D04V1W8, IrelandSchool of Agriculture and Food Science, University College Dublin, Co. Dublin D04V1W8, IrelandSchool of Biological and Chemical Sciences and Ryan Institute, University of Galway, Co. Galway H91TK33, Ireland; GlasPort Bio Ltd, Unit 204, Business Innovation Centre, University of Galway, Co. Galway H91TK33, IrelandSchool of Biological and Chemical Sciences and Ryan Institute, University of Galway, Co. Galway H91TK33, Ireland; Corresponding author.Calcium peroxide (CaO2) offers potential as an anti-methanogenic dietary feed material. The compound has been previously assessed in vitro, with methane (CH4) reductions of > 50% observed. The objective of this study was to assess dietary supplementation of CaO2 at different inclusion levels and physical formats in a finishing beef system on the effects of animal performance, gaseous emissions, rumen fermentation parameters and digestibility. Seventy-two dairy-beef bulls (465 kg; 16 months of age) were randomly allocated to one of four treatments supplemented with CaO2; in a coarse ration (1) CON (0% CaO2), (2) LO (1.35% CaO2), (3) HI (2.25% CaO2), and in a pellet (4) HP (2.25% CaO2) (n = 18). Animals received their respective treatments for a 77 d finishing period, during which DM intake (American Calan Inc., Northwood, NH), average daily gain (ADG), feed efficiency and enteric emissions (GreenFeed emissions monitoring system; C-Lock Inc., Rapid City, SD) were measured. The finishing diet was isonitrogenous and isoenergetic across the four treatment groups, composed of 60:40 grass silage:concentrate. Silage was offered each morning (0900 h), and concentrates were offered twice daily (0800 and 1500 h). Supplementation of CaO2 had no effect on final weight (P = 0.09), ADG (P = 0.22) or feed efficiency (P = 0.13). Regarding DM intake, the HI treatment group consumed in the order of 1 kg less than CON (P < 0.01), while HP did not affect DM intake compared to CON (P = 0.79). Across treatments, DM intake ranged from 8.43 to 9.57 kg/d, equating to 1.6–1.8% of BW. Daily CH4 values for the control were 240 g/d, while CaO2 supplemented diets ranged from 202 to 170 g/d, resulting in daily CH4 reductions of 16, 29 and 27% for LO, HI and HP, respectively, compared to CON (P < 0.0001). Additionally, hydrogen was reduced in CaO2 supplemented animals by 32–36% relative to CON (P < 0.0001), with a simultaneous reduction in volatile fatty acid production (P < 0.01) and an increase in propionate concentration (P < 0.0001). Across all universally accepted CH4 metrics (yield, intensity, production), the dietary inclusion of CaO2 whether at a low or high rate, or indeed, through a coarse ration or pelleted format reduced CH4 in the order of 16–32%. This study also concluded that CaO2 can successfully endure the pelleting process, therefore, improving ease of delivery if implemented at farm level.http://www.sciencedirect.com/science/article/pii/S1751731124002775BovineDigestibilityGreenhouse gas emissionsHydrogenOxidative reduction potential |
| spellingShingle | E. Roskam D.A. Kenny A.K. Kelly V. O’Flaherty S.M. Waters Dietary supplementation with calcium peroxide improves methane mitigation potential of finishing beef cattle Animal Bovine Digestibility Greenhouse gas emissions Hydrogen Oxidative reduction potential |
| title | Dietary supplementation with calcium peroxide improves methane mitigation potential of finishing beef cattle |
| title_full | Dietary supplementation with calcium peroxide improves methane mitigation potential of finishing beef cattle |
| title_fullStr | Dietary supplementation with calcium peroxide improves methane mitigation potential of finishing beef cattle |
| title_full_unstemmed | Dietary supplementation with calcium peroxide improves methane mitigation potential of finishing beef cattle |
| title_short | Dietary supplementation with calcium peroxide improves methane mitigation potential of finishing beef cattle |
| title_sort | dietary supplementation with calcium peroxide improves methane mitigation potential of finishing beef cattle |
| topic | Bovine Digestibility Greenhouse gas emissions Hydrogen Oxidative reduction potential |
| url | http://www.sciencedirect.com/science/article/pii/S1751731124002775 |
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