Journal article
Nutritive Value of Corn Silage as Affected by Maturity and Mechanical Processing: A Contemporary Review
Journal of dairy science, Vol.82(12), pp.2813-2825
12/1999
Handle:
https://hdl.handle.net/2376/106512
PMID: 10629831
Abstract
Stage of maturity at harvest and mechanical processing affect the nutritive value of corn silage. The change in nutritive value of corn silage as maturity advances can be measured by animal digestion and macro in situ degradation studies among other methods. Predictive equations using climatic data, vitreousness of corn grain in corn silage, starch reactivity, gelatinization enthalpy, dry matter (DM) of corn grain in corn silage, and DM of corn silage can be used to estimate starch digestibility of corn silage. Whole plant corn silage can be mechanically processed either pre- or postensiling with a kernel processor mounted on a forage harvester, a recutter screen on a forage harvester, or a stationary roller mill. Mechanical processing of corn silage can improve ensiling characteristics, reduce DM losses during ensiling, and improve starch and fiber digestion as a result of fracturing the corn kernels and crushing and shearing the stover and cobs. Improvements in milk production have ranged from 0.2 to 2.0kg/d when cows were fed mechanically processed corn silage. A consistent improvement in milk protein yield has also been observed when mechanically processed corn silage has been fed. With the advent of mechanical processors, alternative strategies are evident for corn silage management, such as a longer harvest window.
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Details
- Title
- Nutritive Value of Corn Silage as Affected by Maturity and Mechanical Processing: A Contemporary Review
- Creators
- L Johnson - Department of Animal Sciences, Washington State University, Puyallup 98371J.H Harrison - Department of Animal Sciences, Washington State University, Puyallup 98371C Hunt - Department of Animal and Veterinary Science, University of Idaho, Moscow 83844K Shinners - Department of Biological Systems Engineering, University of Wisconsin, Madison 53706C.G Doggett - Department of Animal and Veterinary Science, University of Idaho, Moscow 83844D Sapienza - Pioneer Hi-Bred Int’l Inc., Johnston, IA 50131
- Publication Details
- Journal of dairy science, Vol.82(12), pp.2813-2825
- Academic Unit
- Animal Sciences, Department of
- Publisher
- Elsevier Inc
- Identifiers
- 99900546876601842
- Language
- English
- Resource Type
- Journal article