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Weaning stress and gastrointestinal barrier development: Implications for lifelong gut health in pigs
Open accessAbstract
The gastrointestinal (GI) barrier serves a critical role in survival and overall health of animals and humans. Several layers of barrier defense mechanisms are provided by the epithelial, immune and enteric nervous systems. Together they act in concert to control normal gut functions (e.g., digestion, absorption, secretion, immunity, etc.) whereas at the same time provide a barrier from the hostile conditions in the luminal environment. Breakdown of these critical GI functions is a central pathophysiological mechanism in the most serious GI disorders in pigs. This review will focus on the development and functional properties of the GI barrier in pigs and how common early life production stressors, such as weaning, can alter immediate and long-term barrier function and disease susceptibility. Specific stress-related pathophysiological mechanisms responsible for driving GI barrier dysfunction induced by weaning and the implications to animal health and performance will be discussed.
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“In piglets, early weaning stress impairs intestinal barrier function (271) and increases inflammation (272) and oxidative stress (273).”
From Diet and the Microbiota–Gut–Brain Axis: Sowing the Seeds of Good Mental Health (2021) · cites this paper as [271]
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Meta-analysis reveals the predictable dynamic development of the gut microbiota in commercial pigs
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Early step-down weaning of dairy calves from a high milk volume with glutamine supplementation
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“And it has been shown that early weaning causes changes in the intestinal corticotropin-releasing factor (CRF) system, which can lead to intestinal barrier disorders and intestinal flora imbalance in pigs [81].”
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“During the post-weaning period, weaning stress dramatically decreases the feed intake of pigs, limiting nutrients for bacterial survival and proliferation, reducing intestinal morphology, and leading to intestinal barrier dysfunction [5].”
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“In addition, weaning stress often leads to imbalances in the antioxidant system and damage to the immune system in lambs [9], which result in increased susceptibility to disease.”
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Hennig‐Pauka, I., Menzel, A., Boehme, T. R., Schierbaum, H., Ganter, M., & Schulz, J. (2019) · Frontiers in Veterinary Science · doi:10.3389/fvets.2019.00092 · Cited by 15
Dietary Supplementation with Trihexanoin Enhances Intestinal Function of Weaned Piglets
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“Thus, weaning is one of the most critical developmental stages of the digestive tract [3].”
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InfluentialMussard, E., Lencina, C., Gallo, L., Barilly, C., Poli, M., Fève, K., Albin, M., Cauquil, L., Knudsen, C., Achard, C. S., et al. (2022) · Frontiers in Cell and Developmental Biology · doi:10.3389/fcell.2022.983031 · Cited by 14
“However, it is not known whether pig organoids retain the major alterations of the epithelial barrier function observed at the suckling-to-weaning transition in piglets (Moeser et al., 2017).”
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“The intestinal epithelial cells, such as immune sentinel cells, play important immunomodulatory properties by recognising pathogenic microorganisms and secreting growth factors and interleukins (Moeser et al., 2017).”
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“of the GI epithelial barrier, enteric nervous system and mucosal innate immune responses (Medland et al., 2016; Moeser et al., 2017; Pohl et al., 2017), which coincides with diminished performance and resiliency to later-life stress or infectious challenges.”
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“always results in a series of problems such as increased diarrhea, poor feed utilization, and low survival rate since weaning stress can disrupt the intestinal redox balance and immune function of piglets [3,4].”
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“Oxidative stress induced by weaning can damage the intestinal structure and function [33], seriously affecting the health of piglets.”
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“PWD is often associated with different pathogenic enterotoxigenic E. coli (ETEC) serotypes and Salmonella [1,5].”
BackgroundInfluentialImpacts of weaning age on dietary needs of whey permeate for pigs at 7 to 11 kg body weight
Jang, K. B., Duarte, M. E., Purvis, J. M., & Kim, S. W. (2021) · Journal of Animal Science and Biotechnology/Journal of animal science and biotechnology · doi:10.1186/s40104-021-00637-4 · Cited by 13
“It has been known that weaning stress could have potential to cause the intestinal dysfunction of nursery pigs during postweaning period [23].”
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“These metabolic disorders, induced by weanling stress, are associated with inflammatory response, and impairment of redox balance and intestinal health (2, 3).”
BackgroundMo, K., Yu, W., Li, J., Zhang, Y., Xu, Y., Huang, X., & Ni, H. (2022) · Journal of the Science of Food and Agriculture · doi:10.1002/jsfa.12322 · Cited by 13
Lewton, J. R., Woodward, A. D., Moser, R. L., Thelen, K. M., Moeser, A. J., Trottier, N. L., Tempelman, R. J., & Rozeboom, D. W. (2022) · Translational Animal Science · doi:10.1093/tas/txac083 · Cited by 12
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Jang, K. B., & Kim, S. W. (2022) · Animal Bioscience · doi:10.5713/ab.22.0269 · Cited by 12
“Moeser et al [37] showed that intestinal damage by weaning stress would be sustained for about 14 d after weaning with impaired intestinal functions, resulting in a reduction in the digestive and absorptive capacity in the small intestine of nursery pigs.”
BackgroundSadurní, M., Barroeta, A. C., Sol, C., Puyalto, M., & Castillejos, L. (2023) · Journal of Animal Science · doi:10.1093/jas/skad090 · Cited by 14
Outlaw, A. C., Gachman, A. M., Kim, H. J., Xu, X., Tan, Z., Qin, Z.-H., Peng, X., & Rudar, M. (2023) · Translational Animal Science · doi:10.1093/tas/txad111 · Cited by 12
“The first month of postnatal life is a critical period for intestinal development in pigs (Moeser et al., 2017).”
Zhang, Y., Xu, B., Zhao, L., Zhu, L.-Y., Batonon-Alavo, D. I., Jachacz, J., Qi, D., Zhang, S., Ma, L., & Sun, L. (2019) · Animals · doi:10.3390/ani9121048 · Cited by 12
“Maternal dietary DL-Met and/or OH-Met supplementation also increased free amino acids in milk that were associated with redox control (cystine and taurine), which might enhance the ability of piglets to cope with stress [36].”
BackgroundDufourny, S., Antoine, N., Pitchugina, E., Delcenserie, V., Godbout, S., Douny, C., Scippo, M., Froidmont, É., Rondia, P., Wavreille, J., et al. (2021) · Microorganisms · doi:10.3390/microorganisms9030572 · Cited by 12
“Indeed, many mechanisms related to the barrier properties of the gas‐ trointestinal tract are to be explored, such as permeability of the epithelium or interleu‐ kins and growth factors secretion [25].”
BackgroundHan, Y., Zhan, T., Tang, C., Zhao, Q., Dansou, D. M., Yu, Y., Barbosa, F. F., & Zhang, J. (2021) · Animals · doi:10.3390/ani11051292 · Cited by 14
“Weaning stress generally causes a considerable incidence of PWD in piglets, which results in an increase in morbidity and mortality and serious economic losses [24,25,40].”
BackgroundZhang, Y., Wu, T., Chen, Z., Meng, Y., Zhu, Z., Wang, Q., Tian, J., Yi, D., Wang, L., Zhao, D., et al. (2021) · Animals · doi:10.3390/ani11051424 · Cited by 12
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“An emerging study demonstrated that early weaning contributes to a severe inflammatory response [48].”
BackgroundBARDUCCI, R. S., Santos, A. A. D., Pacheco, L. G., Putarov, T. C., Koch, J. F. A., Callegari, M. A., Dias, C. P., de Carvalho, R. H., & da Silva, C. A. (2024) · Animals · doi:10.3390/ani14040631 · Cited by 11
“This low feed intake induces changes in the permeability of the gastrointestinal tract, especially in the first two weeks post-weaning, with a reduction in villus height and in the depth of the crypts of the intestinal mucosa, decreasing the absorption capacity [8,9].”
BackgroundChoi, H., Rocha, G. C., & Kim, S. W. (2025) · Animal Science Journal · doi:10.1111/asj.70027 · Cited by 11
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“…may increase the challenges in the gut, resulting in increased postweaning diarrhea and gut inflammation due to undigested and unabsorbed dietary components, which can result in impaired intestinal barrier functions, although they may grow faster than those not consuming feed at high level [26,33].”
Ding, D., Mou, D., Zhu, H., Jiang, X., Che, L., Fang, Z., Xu, S., Lin, Y., Zhuo, Y., Li, J., et al. (2022) · Frontiers in Nutrition · doi:10.3389/fnut.2022.900421 · Cited by 11
Evidence-Based Recommendations for Herd Health Management of Porcine Post-Weaning Diarrhea
Eriksen, E. Ø., Pedersen, K. S., Larsen, I., & Nielsen, J. P. (2022) · Animals · doi:10.3390/ani12141737 · Cited by 11
Wang, X., Deng, T., Zhou, X., Chu, L., Zeng, X., Zhang, S., Guan, W., & Chen, F. (2024) · Antioxidants · doi:10.3390/antiox13020246 · Cited by 12
“Weaning piglets undergo a challenging transition characterized by diarrhea, growth inhibition, and increased mortality, leading to significant economic losses [1,2].”
Dumitru, M., Hăbeanu, M., Lefter, N. A., & Gheorghe, A. (2020) · ROMANIAN BIOTECHNOLOGICAL LETTERS · doi:10.25083/rbl/25.6/2060.2069 · Cited by 11
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“In addition, the gut of weaned pigs is affected by increased permeability, alterations in enteric neuron numbers and cholinergic activity, as well as by upregulation of proinflammatory cytokines and hyperplasia of intestinal mast cells [10].”
BackgroundChen, J., Zhang, X., Zhang, Y., Jiang, S., Han, Y., Zhang, L., Zhang, Y., & Du, H. (2024) · Journal of Animal Science · doi:10.1093/jas/skae311 · Cited by 10
Tissue and cellular spatiotemporal dynamics in colon aging
Daly, A. C., Cambuli, F., Äijö, T., Lötstedt, B., Marjanovic, N. D., Fernandez, S., Kuksenko, O., Smith-Erb, M., Domovic, D., Wittenberghe, N. V., et al. (2025) · Nature Biotechnology · doi:10.1038/s41587-025-02830-6 · Cited by 11
“From the cecum to the rectum, the colon carries out spatially confined regional functions, which emerge postnatally and are required for the digestion of solid food 4,5 .”
Genova, J. L., Melo, A. D. B., Rupolo, P. E., Carvalho, S. T., Costa, L. B., & Carvalho, P. L. D. O. (2020) · Czech Journal of Animal Science · doi:10.17221/70/2020-cjas · Cited by 13
“Furthermore, the nervous system is also one of the main regulators of local gastrointestinal systemic and immune responses via neuroimmune synapses and can modulate the sensitivity and adherence of bacterial toxins (Moeser et al. 2017).”
BackgroundInfluentialResende, M., Chaves, R. F., García, R., Barbosa, J. A., Marques, A. S., Rezende, L. R., Peconick, A. P., Garbossa, C. A. P., Mesa, D., da Silva, C. C., et al. (2020) · Livestock Science · doi:10.1016/j.livsci.2020.104311 · Cited by 12
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Júnior, D. T. V., Rodrigues, G. D. A., Soares, M. H., Silva, C. B., Frank, E. O., González-Vega, J. C., Htoo, J. K., Brand, H. G., Silva, B. A. N., & Saraiva, A. (2023) · Livestock Science · doi:10.1016/j.livsci.2023.105202 · Cited by 10
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“However, multiple studies have shown creep feeding does not necessarily improve pre- and postweaning growth or litter uniformity, as not all piglets consume the creep offered (Sulabo et al., 2010; Muns and Magowan, 2018).”
BackgroundShi, C., Xu, S., Huang, C., Wang, Z., Wang, W., Ming, D., Yin, X., Liu, H., & Wang, F. (2022) · Frontiers in Neuroscience · doi:10.3389/fnins.2022.878541 · Cited by 10
“Enteric neuroplasticity is an adaption to intestinal contents and the intestinal microenvironment and is pronounced during early development in mammals (Moeser et al., 2017).”
BackgroundZhang, Y., Yi, D., Xu, H., Tan, Z., Meng, Y., Wu, T., Wang, L., Zhao, D., & Hou, Y. (2022) · BMC Veterinary Research · doi:10.1186/s12917-022-03410-5 · Cited by 10
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Vitamin B5 supplementation enhances intestinal development and alters microbes in weaned piglets
Wang, X., Qin, Y., Li, J., Huang, P., Li, Y., Huang, J., Wang, Q., & Yang, H. (2024) · Animal Biotechnology · doi:10.1080/10495398.2024.2335340 · Cited by 9
“6,7 11 Pantothenic acid, a form of water-soluble vitamin B5 (VB5), serves as a crucial raw material for the synthesis of coenzyme A (CoA) in cells.”
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Metadata
- Authors
- Moeser, A. J., Pohl, C. S., & Rajput, M.
- Affiliations
- Michigan State University (US)
- Corresponding author
- Moeser, Adam J.
- Venue
- Animal nutrition
- Publisher
- Elsevier BV
- Published
- 2017-12
- Volume
- 3
- Issue
- 4
- Pages
- 313-321
- ISSN
- 2405-6383 (ISSN-L)
- 2405-6545
- PMC
- PMC5941262
- OpenAlex
- W2732972012
- Cited by
- 452
- References
- 95
- Citations by year
- 2026: 54 · 2025: 53 · 2024: 61 · 2023: 63 · 2022: 85 · 2021: 60 · 2020: 38 · 2019: 34 · 2018: 4
- FWCI
- 2.53
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Animal nutrition (publishedVersion, cc-by-nc-nd)
- Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
- PubMed Central (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- National Institutes of Health (HD072968)
- USDA National Institute of Food and Agriculture (2017-67015-26673)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Nutrition and Physiology
- Health Sciences › Veterinary › Small Animals › Veterinary medicine and infectious diseases
- Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
- Keywords
- weaning stress, gastrointestinal barrier, pigs, gut health, intestinal epithelium, enteric nervous system, intestinal immunity, disease susceptibility, early life stress, barrier dysfunction
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