Author:
Wilkins R. J.,Lonsdale C. R.,Tetlow R. M.,Forrest T. J.
Abstract
SUMMARYWafers of dried grass which differed in particle size (modulus of fineness) were prepared and fed ad libitum to cattle and sheep. The response of the two classes of stock to the feeds was similar. The digestibility of organic matter and of cellulose decreased with decrease in modulus of fineness (more fine particles) and this was associated with more rapid passage of the finely-milled material through the alimentary tract. Organic matter intake generally increased with decrease in modulus of fineness, but the pattern of response differed between experiments. In one experiment the difference in voluntary intake between feeds with modulus of fineness of 2·5 and 1·0 was less than 5% and not significant, but in a second experiment the intake of feed with modulus of fineness of 2·1 was 18% lower than that of feed with modulus of fineness of 1·0. In the first experiment the wafers broke down during handling and feeding with the result that the feed of low modulus of fineness was extremely dusty, but in the second experiment a binding agent was included and little breakdown of wafers occurred. It is suggested that dustiness may have restricted the intake of some of the feeds in the first experiment. Intakes of digestible organic matter did not differ significantly between treatments in either experiment.
Publisher
Cambridge University Press (CUP)
Subject
Animal Science and Zoology
Reference32 articles.
1. The Relation of Cellulose and Lignin Content to the Nutritive Value of Animal Feeds
2. American Society Of Agricultural Engineers. 1967a. Recommendation A.S.A.E. R.2461. Method of determining modulus of uniformity and modulus of fineness of ground feed. A.S.A.E. Yearbook, 1967, p. 301.
3. Some observations on the digestibility of food by sheep, and on related problems
4. The effect of the grinding and cubing process on the utilization of the energy of dried grass
5. Van es A. J. H. 1969. The efficiency of the utilization of the metabolisable energy by lactating cows fed concentrates and either hay, silage or hay and hay—or straw-pellets. Proc. 3rd Gen. Meeting Europ. Grassld Fed.: 275–281
Cited by
38 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献