Influence of corn variety and cutting height on nutritive value of silage fed to lactating dairy cows
Open accessAbstract
Two corn varieties predicted to differ in digestibility were harvested at 2 cutting heights (10.2 or 30.5 cm) to determine effects on the nutrient content of the resulting silage, nutrient intake, nutrient digestibility, and production of lactating cows fed such corn silage originally harvested at two-thirds milk line. Acid detergent fiber (ADF) concentration was higher and in vitro true dry matter (DM) digestibility (IVTDMD) was lower for the variety predicted to have average digestibility. An interaction was observed between variety and cutting height because of decreased ADF and increased IVTDMD for the average digestibility variety cut at 30.5 vs. 10.2 cm; no differences were observed for the higher digestibility variety at each cutting height. When silages were fed to 32 Holstein cows in a 5-wk randomized design trial, DM intake, milk yield, and milk composition were similar. There was an interaction between variety and cutting height for DM intake and total tract apparent digestibility of DM, crude protein, and neutral detergent fiber because of lower intake and digestibility for the diets containing either the high cut, average quality variety or low cut, higher quality variety. These results suggest that increasing the cutting height to 30.5 cm does not improve silage quality or improve milk yield of cows. Although the 2 varieties selected for this trial were predicted to differ in digestibility, these differences were not great enough to influence milk yield or composition of lactating cows.
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Lactation performance of mid-lactation cows was not improved when cutting height was increased from 10.2 to 30.5 cm.
“In contrast, lactation performance of mid-lactation cows was not improved when cutting height was increased from 10.2 to 30.5 cm in the study by Bernard et al. (2004).”
From Silage review: Recent advances and future technologies for whole-plant and fractionated corn silage harvesting (2018) · cites this paper as Bernard et al., 2004
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- Authors
- Bernard, J. K., West, J. W., Trammell, D. S., & Cross, G. H.
- Affiliations
- University of Georgia (US)
- Corresponding author
- Bernard, J.K.
- ORCID
- Bernard, J.K.
- Venue
- Journal of Dairy Science
- Publisher
- American Dairy Science Association
- Published
- 2004-07
- Volume
- 87
- Issue
- 7
- Pages
- 2172-2176
- ISSN
- 0022-0302 (ISSN-L)
- OpenAlex
- W2167603037
- Semantic Scholar
- 1381fdf92588a2009373423469acb239a58ae829
- Cited by
- 34
- References
- 15
- Citations by year
- 2025: 1 · 2024: 2 · 2023: 2 · 2022: 3 · 2021: 2 · 2020: 1 · 2018: 1 · 2017: 2 · 2016: 2 · 2015: 3 · 2014: 2 · 2013: 2 · 2012: 2
- FWCI
- 1.44
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Journal of Dairy Science (publishedVersion)
- PubMed (publishedVersion)
- Funders
- DuPont Pioneer
- 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 › Animal Science and Zoology › Animal Nutrition and Physiology
- Keywords
- corn silage, cutting height, maize varieties, lactating dairy cows, silage nutritive value, acid detergent fiber, in vitro dry matter digestibility, nutrient intake, milk yield, milk composition, Holstein cows, neutral detergent fiber, crude protein digestibility
- MeSH terms
- Agriculture, Animals, Animal Nutritional Physiological Phenomena, Cattle, Zea mays, Digestion, Female, Hybridization, Genetic, Lactation, Milk, Nutritive Value, Silage
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