Journal
PARASITOLOGY RESEARCH
Volume 121, Issue 11, Pages 3347-3350Publisher
SPRINGER
DOI: 10.1007/s00436-022-07610-8
Keywords
Respiration chambers; Methane production; Ewes; Paramphistomes; Calicophoron daubneyi
Categories
Funding
- BBSRC Industrial Partnership Award [BB/N017757/1]
- Agrisearch
- AHDB
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This study demonstrates that a high rumen fluke burden can increase methane emissions, but only when expressed on a body weight basis. The findings highlight the need for further research to better understand the relationship between rumen fluke infection and methane production.
Thirty-six ewes aged 18 months were assigned to one of three groups (n = 12) on the basis of faecal egg count (FEC) for rumen fluke; C: control (FEC = 0-5 epg), T: affected (FEC >= 6 epg) and treated, NT: affected (FEC >= 6 epg) and not treated. T ewes were treated with oxyclozanide 14 days prior to the trial commencing. Ewes were fed grass silage ad libitum. Digestibility crates and respiration chambers were used to measure feed digestibility and methane production. Dry matter intake (DMI), feed digestibility and CH4/DMI did not differ (P > 0.05) between treatments. However, CH4/live weight (LW) was significantly greater (P < 0.001) for NT ewes, while that of C and T ewes were similar. This study indicates that a high rumen fluke burden can increase methane emissions but only when expressed on a body weight basis (per kg LW). As the link between rumen fluke infection and methane production has not previously been investigated within the literature, these findings demonstrate the need for further research to better understand these relationships.
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