Cited by 86Ruminant Nutrition and Digestive PhysiologyMilk Quality and Mastitis in Dairy CowsAnimal Nutrition and Physiology

Transient changes in milk production efficiency and bacterial community composition resulting from near-total exchange of ruminal contents between high- and low-efficiency Holstein cows

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Weimer, Paul J., Cox, Madison S., Vieira de Paula, Tania, Lin, Miao, Hall, Mary Beth, Suen, Garret·2017·Journal of Dairy Science

Abstract

The objectives of this study were to determine if milk production efficiency (MPE) is altered by near-total exchange of ruminal contents between high- (HE) and low-MPE (LE) cows and to characterize ruminal bacterial community composition (BCC) before exchange and over time postexchange. Three pairs of ruminally cannulated, third-lactation cows were selected whose MPE (energy-corrected milk per unit of dry matter intake) differed over their first 2 lactations. Approximately 95% of ruminal contents were exchanged between cows within each pair. Ruminal pH and volatile fatty acid (VFA) profiles, along with BCC (characterized by sequencing of the variable 4 region of 16S rRNA genes), were assessed just before feeding on d -8, -7, -5, -4, -1, 1, 2, 3, 7, 10, 14, 21, 28, 35, 42, and 56, relative to the exchange date. High-MPE cows had higher total ruminal VFA concentrations, higher molar percentages of propionate and valerate, and lower molar percentages of acetate and butyrate than did LE cows, and re-established these differences 1 d after contents exchange. Across all LE cows, MPE increased during 7 d postexchange but declined thereafter. Two of the 3 HE cows displayed decreases in MPE following introduction of the ruminal contents from the corresponding LE cow, but MPE increased in the third HE cow, which was determined to be an outlier. For all 6 cows, both liquid- and solids-associated BCC differed between individuals within a pair before contents exchange. Upon exchange, BCC of both phases in all 3 pairs was more similar to that of the donor inoculum than to preexchange host BCC. For 5 of 6 cows, the solids-associated community returned within 10 d to more resemble the preexchange community of that host than that of the donor community. Individual variability before the exchange was greater in liquids than in solids, as was the variability in response of bacterial communities to the exchange. Individual cows varied in their response, but generally moved toward re-establishment of their preexchange communities by 10 d after contents exchange. By contrast, ruminal pH and VFA profiles returned to preexchange levels within 1 d. Despite the small number of cows studied, the data suggest an apparent role for the ruminal bacterial community as a determinant of MPE.

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  • In another near-total rumen content exchange between high- and low-efficiency Holstein cows, the hosts returned the rumen bacterial community to the original status, linking the rumen microbiome to milk production efficiency.

    “Furthermore, in another near-total rumen content exchange between high- and low-efficiency Holstein cows, Weimer et al. (2017) demonstrated the hosts ability to return the rumen bacterial community to the original status, whilst linking the rumen microbiome to milk production efficiency.”

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  1. Linn, J., M. Raeth-Knight, S. Fredin, and A. Bach. 2007. Feed efficiency in lactating dairy cows. Page 10 in Proc. Colorado Dairy Nutrition Conf., Colorado Springs, CO. http://www.cvmbs. colostate.edu/ilm/proinfo/cdn/2007/Feed Efficiency in Lactating Dairy Cows.pdf.

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Authors
Weimer, P. J., Cox, M. S., Vieira de Paula, T., Lin, M., Hall, M. B., & Suen, G.
Affiliations
  • Agricultural Research Service (US)
  • University of Wisconsin–Madison (US)
  • Yangzhou University (CN)
Corresponding author
Weimer, Paul J.
Venue
Journal of Dairy Science
Published
2017-09
Volume
100
Issue
9
Pages
7165-7182
ISSN
0022-0302 (ISSN-L)
OpenAlex
W2733438820
Cited by
86
References
60
Citations by year
2026: 6 · 2025: 14 · 2024: 9 · 2023: 6 · 2022: 11 · 2021: 12 · 2020: 13 · 2019: 8 · 2018: 7
FWCI
13.36
Type
journal article
Language
en
Open access
Locations
  • Journal of Dairy Science (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • USDA NIFA AFRI (Washington, DC) Foundational (2015-67015-23246)
  • USDA-Agricultural Research Service (Washington, DC) CRIS project (5090-21000-024-00-D)
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 › Milk Quality and Mastitis in Dairy Cows
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Nutrition and Physiology
Keywords
milk production efficiency, Holstein cows, volatile fatty acids, rumen pH, 16S rRNA gene sequencing, energy-corrected milk, dry matter intake, propionate, valerate, acetate, butyrate
MeSH terms
Animals, Cattle, Diet, Female, Fermentation, Hydrogen-Ion Concentration, Lactation, Milk, RNA, Ribosomal, 16S, Rumen

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