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Cited by 223Ruminant Nutrition and Digestive PhysiologyAgricultural Engineering and MechanizationAnimal Nutrition and Physiology

Storage temperature effects on proteolysis in alfalfa silage

R. E. Muck, J. T. Dickerson·1988·Transactions of the ASAE
DOI 10.13031/2013.30813
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Abstract

ABSTRACT FIRST and third cutting alfalfa was ensiled in mini-silos (100 ml centrifuge tubes) at 40 or 55% dry matter and incubated at 15, 25 or 35 C for 40 days. In both trials and at both dry matter levels, the amount of proteolysis increased with storage temperature, averaging 10 percentage units as a fraction of total nitrogen between 15 and 35 C. Increasing storage temperature also elevated ammonia concentrations between 15 and 25 C but not between 25 and 35 C. The results of this study indicated that temperature affected the rate of loss of protease activity during fermentation, based on simulations using the silage model of Pitt et al. (1985) as modified by Muck (1987). The experiments suggest that management practices that control or reduce silage temperature may be important in maximizing the amount of nitrogen in alfalfa which remains as true protein through ensiling.

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  • Proteolysis rates double for every 10°C increase between 10 and 38°C.

    “Proteolysis, the breakdown of plant proteins to free AA, peptides, and ammonia, is also affected by temperature, with rates doubling for every 10°C increase between 10 and 38°C (Muck and Dickerson, 1988).”

    From Silage review: Factors affecting dry matter and quality losses in silages (2018) · cites this paper as Muck and Dickerson, 1988

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Authors
Muck, R. E., & Dickerson, J. T.
Venue
Transactions of the ASAE
Publisher
American Society of Agricultural and Biological Engineers (ASABE)
Published
1988
Volume
31
Issue
4
Pages
1005-1009
ISSN
  • 0001-2351 (ISSN-L)
  • 2151-0059
DOI
10.13031/2013.30813
OpenAlex
W1975613344
Cited by
223
References
0
Citations by year
2026: 3 · 2025: 8 · 2024: 8 · 2023: 7 · 2022: 10 · 2021: 14 · 2020: 15 · 2019: 13 · 2018: 11 · 2017: 5 · 2016: 13 · 2015: 17 · 2014: 10 · 2013: 7 · 2012: 12
FWCI
1.50
Type
journal article
Language
en
Open access
closed
Locations
Transactions of the ASAE (publishedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Ruminant Nutrition and Digestive Physiology
  • Physical Sciences › Engineering › Mechanical Engineering › Agricultural Engineering and Mechanization
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Nutrition and Physiology
Keywords
alfalfa silage, proteolysis, storage temperature, ammonia, proteolytic activity, silage fermentation, dry matter content, nitrogen retention, true protein

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