Hostname: page-component-76fb5796d-wq484 Total loading time: 0 Render date: 2024-04-29T12:31:50.341Z Has data issue: false hasContentIssue false
  • English
  • Français

The particle size distribution in colombian rice polishings and its effect on gas production by rumen micro-organisms in vitro

Published online by Cambridge University Press:  24 November 2017

D. Cardenas Garcia ,
H. Galbraith ,
C.J. Newbold  and
J.A. Rooke
D. Cardenas Garcia
Affiliation:
University of Aberdeen, 581 King Street, Aberdeen, AB9 1UD
H. Galbraith
Affiliation:
University of Aberdeen, 581 King Street, Aberdeen, AB9 1UD
C.J. Newbold
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen, AB2 9SB
J.A. Rooke
Affiliation:
Scottish Agricultural College, 581 King Street, Aberdeen, AB9 1UD
Get access

Extract

Rice polishings (RP) which are produced as a by-product during the pearling of hulled rice have been successfully used as a supplementary food for ruminants. However, information on the effects of feeding RP on rumen fermentation is contradictory. Valdez et al. (1977) found RP had little effect on rumen fermentation in bulls and suggested that the stimulation in growth rate observed, with RP may be mediated by the provision of nutrients postruminally. In contrast, Cardenas et al. (1992) reported that RP stimulated volatile fatty acid concentrations and microbial numbers when added to a rumen simulating fermentor (Rusitec). One reason for these differences might be that changes in the milling process, used to produce RP, have resulted in a by-product with different physical characteristics to that used in earlier studies. The experiment described here was designed to investigate the particle size distribution in Colombian rice polishings and the effect of these fractions on the rumen fermentation in vitro.

Type
Tropical Forages
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1993: Winter meeting , March 1993 , pp. 202
Copyright
Copyright © The British Society of Animal Production 1993

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Belyea, R.L., Steevens, B.J., Restrepo, R.J. and Clubb, A.P. 1989. Variation in composition of by-products feeds. Journal Dairy Science, 72 : 2339–2345.CrossRefGoogle Scholar
Cardenas, G.D., Newbold, C.J., Galbraith, H. Topps, J.H. 1992. The effect of including Colombian rice polishings in the diet on rumen fermentation in vitro. Animal Production, 54: 275–280.Google Scholar
Ferreiro, H.M., Elliott, R., and Preston, T.R. 1979. The effect of energy rich feed supplements on the availability of nutrients in the duodenum of cattle fed sugar cane Tropical Animal Production, 4: 248–254.Google Scholar
Lawes Agricultural Trust 1987. Genstat V Mark 404 B. Rothamstead Experimental Station, Herpenden, Hertfordshire.Google Scholar
Menke, K.H., Raab, L., Salewski, A., Steingass, H., Fritz, D. and Schneider, W. 1979. The estimation of the digestibility and metabolizable energy content of ruminant feedingstuffs from the gas production when they are incubated with rumen liquor in vitro. Journal of Agricultural Science. Cambridge, 93: 217–222.Google Scholar
Valdez, R.E., Alvarez, FJ., Ferreiro, H.M., Guerra, F., Lopez, R.A., Priego, A., Blackburn, T.H., Leng, R.A. and Preston, T.R. 1977. Rumen function in cattle given sugar cane. Tropical Animal Production, 2: 260–272.Google Scholar