The DOI matches its Crossref record; 86 of the 88 references it cites were found in a registry or an index.
From pre- to postweaning: Transformation of the young calf's gastrointestinal tract
Open accessAbstract
The ruminant gastrointestinal tract (GIT) faces the challenge of protecting the host from luminal contents and pathogens, while supporting the absorption and metabolism of nutrients for growth and maintenance. The GIT of the calf in early life undergoes some of the most rapid microbial and structural changes documented in nature, and these adaptations in GIT function make the young calf susceptible to GIT diseases and disorders. Despite these challenges, the calf's GIT has a certain degree of plasticity and can sense nutrient supply and respond to bioactive ingredients. Calf GIT research has historically focused on the transition during weaning and characterizing ruminal papillae development using microscopy and digesta metabolite responses. Through the use of new molecular-based approaches, we have recently shown that delaying the age of weaning and providing a step-down weaning protocol is associated with a more gradual shift in ruminal microbiota to a postweaned state. In addition to ruminal adaptations during weaning, nutrient flow to the lower gut changes dramatically during weaning, coinciding with a wide array of structural and microbiological changes. Structural and gene expression changes suggest that the lower gut of the dairy calf undergoes alterations that may reduce barrier function when solid feeds are consumed. More recently, in vivo data revealed that the weaning transition increases total gut permeability of the calf. Interestingly, the lower gut may be able to communicate with the forestomach, meaning that a nutrient can be sensed in the lower gut and cause subsequent adaptations in the forestomach. An improved understanding of how diet, microbiota, and functional ingredients interact to affect growth and barrier function of the intestinal tract would greatly benefit the dairy calf industry. A mechanistic understanding of such adaptations would also aid in the formulation of specific management regimens and provision of functional ingredients required to characterize and enhance gut function in young calves.
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“Additionally, young calves rely on milk for the majority of their nutrition, as their gastrointestinal tract is not fully developed for digesting solids (8).”
From Effect of source and journey on physiological variables in calves transported by road and ferry between Ireland and the Netherlands (2023) · cites this paper as [8]
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Metadata
- Authors
- Meale, S. J., Chaucheyras-Durand, F., Berends, H., Guan, L. L., & Steele, M. A.
- Affiliations
- Unité Mixte de Recherche sur les Herbivores (FR)
- Trouw Nutrition (Brazil) (BR)
- University of Alberta (CA)
- Corresponding author
- Steele, Michael A.
- Venue
- Journal of Dairy Science
- Publisher
- American Dairy Science Association
- Published
- 2017-07
- Volume
- 100
- Issue
- 7
- Pages
- 5984-5995
- ISSN
- 0022-0302 (ISSN-L)
- OpenAlex
- W2616070946
- Cited by
- 163
- References
- 88
- Citations by year
- 2026: 17 · 2025: 17 · 2024: 15 · 2023: 31 · 2022: 23 · 2021: 19 · 2020: 14 · 2019: 12 · 2018: 13 · 2017: 2
- FWCI
- 19.50
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Journal of Dairy Science (publishedVersion)
- PubMed (publishedVersion)
- HAL (submittedVersion)
- Funders
- University of Alberta
- Topics
- Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Ruminant Nutrition and Digestive Physiology
- Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Nutrition and Physiology
- Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal health and immunology
- Keywords
- gastrointestinal tract development, weaning transition, ruminal papillae, rumen microbiota, intestinal permeability, forestomach, functional feed ingredients, gut microbiota, gene expression
- MeSH terms
- Animals, Animal Feed, Animals, Newborn, Cattle, Diet, Rumen, Weaning, Gastrointestinal Tract
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