Isolated rearing at lactation increases gut microbial diversity and post-weaning performance in pigs

Tsungcheng Tsai, Marites A. Sales, Haejin Kim, Gisela F. Erf, Nguyen Vo, Franck Carbonero, Marie Van Der Merwe, Elizabeth B. Kegley, Randal Buddington, Xiaofan Wang, Charles V. Maxwell, Jiangchao Zhao

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Abstract

Environment and diet are two major factors affecting the human gut microbiome. In this study, we used a pig model to determine the impact of these two factors during lactation on the gut microbiome, immune system, and growth performance. We assigned 80 4-day-old pigs from 20 sows to two rearing strategies at lactation: conventional rearing on sow’s milk (SR) or isolated rearing on milk replacer supplemented with solid feed starting on day 10 (IR). At weaning (day 21), SR and IR piglets were co-mingled (10 pens of 4 piglets/pen) and fed the same corn-soybean meal-dried distiller grain with solubles- and antibiotic-free diets for eight feeding phase regimes. Fecal samples were collected on day 21, 62, and 78 for next-generation sequencing of the V4 hypervariable region of the bacterial 16S rRNA gene. Results indicate that IR significantly increased swine microbial diversity and changed the microbiome structure at day 21. Such changes diminished after the two piglet groups were co-mingled and fed the same diet. Post-weaning growth performance also improved in IR piglets. Toward the end of the nursery period (NP), IR piglets had greater average daily gain (0.49 vs. 0.41 kg/d; P < 0.01) and average daily feed intake (0.61 vs. 0.59 kg/d; P < 0.01) but lower feed efficiency (0.64 vs. 0.68; P = 0.05). Consequently, IR piglets were heavier by 2.9 kg (P < 0.01) at the end of NP, and by 4.1 kg (P = 0.08) at market age compared to SR piglets. Interestingly, pigs from the two groups had similar lean tissue percentage. Random forest analysis showed that members of Leuconostoc and Lactococcus best differentiated the IR and SR piglets at weaning (day 21), were negatively correlated with levels of Foxp3 regulatory T cell populations on day 20, and positively correlated with post-weaning growth performance. Our results suggest that rearing strategies may be managed so as to accelerate early-life establishment of the swine gut microbiome to enhance growth performance in piglets.

Original languageEnglish (US)
Article number2889
JournalFrontiers in Microbiology
Volume9
Issue numberNOV
DOIs
StatePublished - Nov 29 2018

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Weaning
Lactation
Swine
Nurseries
Microbiota
Growth
Diet
Milk
Lactococcus
Leuconostoc
Regulatory T-Lymphocytes
rRNA Genes
Soybeans
Zea mays
Meals
Immune System
Anti-Bacterial Agents
Population
Gastrointestinal Microbiome

All Science Journal Classification (ASJC) codes

  • Microbiology
  • Microbiology (medical)

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Isolated rearing at lactation increases gut microbial diversity and post-weaning performance in pigs. / Tsai, Tsungcheng; Sales, Marites A.; Kim, Haejin; Erf, Gisela F.; Vo, Nguyen; Carbonero, Franck; Van Der Merwe, Marie; Kegley, Elizabeth B.; Buddington, Randal; Wang, Xiaofan; Maxwell, Charles V.; Zhao, Jiangchao.

In: Frontiers in Microbiology, Vol. 9, No. NOV, 2889, 29.11.2018.

Research output: Contribution to journalArticle

Tsai, T, Sales, MA, Kim, H, Erf, GF, Vo, N, Carbonero, F, Van Der Merwe, M, Kegley, EB, Buddington, R, Wang, X, Maxwell, CV & Zhao, J 2018, 'Isolated rearing at lactation increases gut microbial diversity and post-weaning performance in pigs', Frontiers in Microbiology, vol. 9, no. NOV, 2889. https://doi.org/10.3389/fmicb.2018.02889
Tsai, Tsungcheng ; Sales, Marites A. ; Kim, Haejin ; Erf, Gisela F. ; Vo, Nguyen ; Carbonero, Franck ; Van Der Merwe, Marie ; Kegley, Elizabeth B. ; Buddington, Randal ; Wang, Xiaofan ; Maxwell, Charles V. ; Zhao, Jiangchao. / Isolated rearing at lactation increases gut microbial diversity and post-weaning performance in pigs. In: Frontiers in Microbiology. 2018 ; Vol. 9, No. NOV.
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AU - Carbonero, Franck

AU - Van Der Merwe, Marie

AU - Kegley, Elizabeth B.

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