Please use this identifier to cite or link to this item:
https://hdl.handle.net/1959.11/9045
Title: | Persistence of defaunation effects on digestion and methane production in ewes | Contributor(s): | Bird, Simon H (author); Hegarty, Roger (author); Woodgate, R (author) | Publication Date: | 2008 | DOI: | 10.1071/EA07298 | Handle Link: | https://hdl.handle.net/1959.11/9045 | Abstract: | The effect of defaunation on feed digestion and on methane production of ewes was determined 10 and 25 weeks after defaunation. When fed a lucerne diet (800 g/day), the absence of protozoa did not change the apparent digestibility of dry matter, excretion of macro-minerals, or methane production 10 or 25 weeks post-treatment. Defaunation did, however, increase microbial protein flow by 22% (estimated from allantoin excretion) and the molar proportions of acetate and butyrate in the rumen, while decreasing excretion of copper and manganese. The fermentation data contrasts with previous studies that found defaunation reduced methanogenesis and rumen acetate proportions, but supports the hypothesis that a reduction in rumen acetate percentage is required to achieve reduced methanogenesis through defaunation. | Publication Type: | Journal Article | Source of Publication: | Australian Journal of Experimental Agriculture, 48(2), p. 152-155 | Publisher: | CSIRO Publishing | Place of Publication: | Australia | ISSN: | 1446-5574 0816-1089 1836-5787 1836-0939 |
Fields of Research (FoR) 2008: | 070202 Animal Growth and Development | Socio-Economic Objective (SEO) 2008: | 830310 Sheep - Meat | Peer Reviewed: | Yes | HERDC Category Description: | C1 Refereed Article in a Scholarly Journal |
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Appears in Collections: | Journal Article School of Environmental and Rural Science |
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