Cited by 112Ruminant Nutrition and Digestive PhysiologyCrop Yield and Soil FertilityAgricultural Productivity and Crop Improvement

Effects of cutting height and maturity on the nutritive value of corn silage for lactating cows

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Neylon, J.M., Kung, L.·2003·Journal of Dairy Science

Abstract

We studied the effect of increasing the cutting height of whole-plant corn at the time of harvest from 12.7 (NC) to 45.7 (HC) cm on yield and nutritive value of silage for dairy cows. Three leafy corn silage hybrids were harvested at NC and HC at about 34% dry matter (E) and 41% DM (L) and ensiled in laboratory silos. Increasing the height of cutting lowered yields of harvested DM/ha. In addition, the concentrations of DM and starch were higher but the concentrations of lactic acid, crude protein, neutral detergent fiber (NDF), and acid detergent fiber were lower in HC than in NC. The concentration of acid detergent lignin was also lower in HC, but only in corn harvested at E. In vitro digestion (30 h) of NDF was greater in HC (50.7%) than NC (48.3%). Calculated yield of milk per tonne of forage DM was greater for HC than for NC at E but not at L. In a lactation experiment, increasing the height of cutting of another leafy corn silage hybrid, TMF29400, in general also resulted in similar changes in nutrient composition as just described. When fed to lactating dairy cows, HC corn silage resulted in tendencies for greater NDF digestion in the total tract, higher milk production and improved feed efficiency, but there were no differences in 3.5% fat corrected milk between treatments. Results of this study suggest that increasing the cutting height of whole plant corn at harvest can improve the nutritive value of corn silage for lactating dairy cows.

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  1. Curran, 2000, Agronomic management of silage for yield and quality- Silage cutting height, Crop Insights, 10, 1

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Authors
Neylon, J. M., & Kung, L.
Affiliations
University of Delaware (US)
Corresponding author
Kung, L.
Venue
Journal of Dairy Science
Published
2003-06
Volume
86
Issue
6
Pages
2163-2169
ISSN
0022-0302 (ISSN-L)
OpenAlex
W2060959107
Cited by
112
References
12
Citations by year
2026: 11 · 2025: 3 · 2024: 6 · 2023: 6 · 2022: 7 · 2021: 6 · 2020: 6 · 2019: 2 · 2018: 5 · 2017: 8 · 2016: 3 · 2015: 4 · 2014: 11 · 2013: 5 · 2012: 7
FWCI
3.80
Type
journal article
Language
en
Open access
Locations
  • Journal of Dairy Science (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • University of Delaware
  • Johns Hopkins University
Topics
  • Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Ruminant Nutrition and Digestive Physiology
  • Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Crop Yield and Soil Fertility
  • Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Agricultural Productivity and Crop Improvement
Keywords
corn silage, cutting height, harvest maturity, lactating dairy cows, nutritional value, forage yield, acid detergent fiber, acid detergent lignin, milk production, feed efficiency
MeSH terms
Animals, Animal Nutritional Physiological Phenomena, Cattle, Zea mays, Dietary Fiber, Digestion, Female, Food Handling, Hybridization, Genetic, Hydrogen-Ion Concentration, Lactation, Lignin, Nutritive Value, Plant Proteins, Silage, Starch, Lactic Acid

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