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Fiber is required for high concentrate diets to maintain proper rumen function. The type and amount of roughage included in the ration exhibit regional variability due to costs, availability and type of cattle. Recent papers have addressed rumen fiber digestion in response to live yeast products (Cagle et al., 2019), recombinant xylanase (Ran et al, 2019) and mixed fibrolytic enzymes (Kondratovich et al., 2019) with variable results. In this issue, Goulart et al. (2020a and 2020b) examines the effects of atypical roughage sources and dietary inclusion rate on rumen function in Nellore cattle. The papers provide new insight into the importance of particle size, chewing time and rumen acidity.

Comparing the effectiveness of different roughage sources in Brazilian cattle feed

Credit: Journal of Animal Science, Volume 98, Issue 5, May 2020, skaa110, doi.org/10.1093/jas/skaa110

Digital Credit:

Publisher: American Society of Animal Science

Rights: Name must appear as a credit whenever the image is used - Journal of Animal Science, Volume 98, Issue 5, May 2020, skaa110, https://doi.org/10.1093/jas/skaa110

Description: Fiber is required for high concentrate diets to maintain proper rumen function. The type and amount of roughage included in the ration exhibit regional variability due to costs, availability and type of cattle. Recent papers have addressed rumen fiber digestion in response to live yeast products (Cagle et al., 2019), recombinant xylanase (Ran et al, 2019) and mixed fibrolytic enzymes (Kondratovich et al., 2019) with variable results. In this issue, Goulart et al. (2020a and 2020b) examines the effects of atypical roughage sources and dietary inclusion rate on rumen function in Nellore cattle. The papers provide new insight into the importance of particle size, chewing time and rumen acidity.

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