Dry matter and starch disappearance of corn and sorghum as influenced by particle size and processing

Galyean, M.L. and Wagner, D.G. and Owens, F.N. (1981) Dry matter and starch disappearance of corn and sorghum as influenced by particle size and processing. Journal of Dairy Science, 64 (9). pp. 1804-1812.

[img] PDF
Restricted to ICRISAT researchers only


Processed corn or sorghum grain was sieved to obtain particle size fractions and incubated ruminally, by nylon bag technique, to assess the effect of particle size and processing on dry matter and starch disappearance. Dry rolle corn, sieved to obtain fractions with mean particle sizes of 6,000, 3,000, 1,500, and 750 μm and incubated for 2, 4, 6, or 8 h, showed little difference in dry matter disappearance between 6,000 (5.0%) and 3,000, (4.5%) μm corn (averaged over time), but dry matter disappearance increased as particle size fraction was reduced further to means of 1,500 (9.7%) and 750 (18.4%) μm. Starch disappearance displayed a similar pattern. Low dry matter disappearance reflects short incubation times. In a second experiment, corn, steam flaked and then ground, showed much higher dry matter and starch disappearance within each particle size fraction and time than dry ground corn, with particle size appearing much less important in steam flaked corn. In a comparison of ground, high moisture harvested, ensiled corn and dry ground corn, dry matter and starch disappearance were greater in fractions with smaller particles. Moreover, dry matter and starch disappearance were much lower within each particle size in dry ground than high moisture corn. When dry rolled corn was incubated longer (12 and 24 h), average dry matter disappearance increased in fractions with smaller particles as during shorter periods. Particle size had similar effects in sorghum grain

Item Type: Article
Author Affiliation: Oklahoma State University, Stillwater 74078
Subjects: Animal Husbandary
Divisions: Maize
Depositing User: Ms K Syamalamba
Date Deposited: 22 Feb 2013 08:41
Last Modified: 22 Feb 2013 08:41
Official URL: http://dx.doi.org/10.3168/jds.S0022-0302(81)82769-...
URI: http://eprints.icrisat.ac.in/id/eprint/9721

Actions (login required)

View Item View Item