Insight into the Potential of Somatostatin Vaccination with Goats as a Model: From a Perspective of the Gastrointestinal Microbiota

Deciphering the gastrointestinal microbial response to oral SS DNA vaccines with different doses is helpful for identifying the mechanism for effective utilization of the vaccine for improving animal production. Here, we conduct a comparative study with different doses of vaccine (control: empty pla...

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Main Authors: Xiaoli Zhang, Juncai Chen, Siqi Zhang, Bingni Wei, Yanguo Han, Zhongquan Zhao
Format: Article
Language:English
Published: MDPI AG 2025-03-01
Series:Animals
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Online Access:https://www.mdpi.com/2076-2615/15/5/728
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author Xiaoli Zhang
Juncai Chen
Siqi Zhang
Bingni Wei
Yanguo Han
Zhongquan Zhao
author_facet Xiaoli Zhang
Juncai Chen
Siqi Zhang
Bingni Wei
Yanguo Han
Zhongquan Zhao
author_sort Xiaoli Zhang
collection DOAJ
description Deciphering the gastrointestinal microbial response to oral SS DNA vaccines with different doses is helpful for identifying the mechanism for effective utilization of the vaccine for improving animal production. Here, we conduct a comparative study with different doses of vaccine (control: empty plasmid; low dose: 1 × 10<sup>7</sup> CFU vaccine; high dose: 1 × 10<sup>12</sup> CFU vaccine) using goat as a case to investigate the potential of somatostatin vaccination from the entire gastrointestinal microbiota perspective. Our results show that body weight gain and slaughter rate are greater in the L_SS group than in the C_SS group. Compared with the C_SS group, the GH concentration is reduced, while the SS concentration is elevated in the cecum of L_SS goats. Moreover, the SCFAs concentration is elevated in the L_SS goats, the acetate molar proportion is lower in the rumen, the proportion of the acetate is decreased, and propionate is increased in the cecum of L_SS goats. Our data indicate that the low-dose somatostatin vaccine possesses a more efficient improvement in the productivity of goats, emphasizing that the dosage should be considered to reach its optimal effect on the host. Moreover, we find that different doses of the SS vaccination select distinct microbial communities in the gastrointestinal tract. Beta diversity analysis shows a significant interaction. Microorganisms capable of converting nutrients, including <i>Ruminococcacease</i>, <i>Butyrivibrio</i>, <i>Akkermansia</i>, and <i>Lachnospiraceae</i> are enriched, altering the gastrointestinal fermentation response to SS DNA vaccination of ruminants. Moreover, the correlation analysis results revealing these biomarkers have a close association with the phenotypes of productivity. These results imply that somatostatin immunoneutralization might directly alter the gastrointestinal tract commensal bacterial structure, improving gastrointestinal homeostasis, and, thus, modifying the fermentability and effected hormone level to improve the productivity of goats. Our study extends the understanding of the somatostatin vaccine regulation of ruminants’ growth through the entire gastrointestinal microbial perspective.
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spelling doaj-art-b5fc3986fa28416094fd7ade991ffda22025-08-20T02:52:35ZengMDPI AGAnimals2076-26152025-03-0115572810.3390/ani15050728Insight into the Potential of Somatostatin Vaccination with Goats as a Model: From a Perspective of the Gastrointestinal MicrobiotaXiaoli Zhang0Juncai Chen1Siqi Zhang2Bingni Wei3Yanguo Han4Zhongquan Zhao5Chongqing Key Laboratory of Herbivore Science, College of Animal Science and Technology, Southwest University, Chongqing 400715, ChinaChongqing Key Laboratory of Herbivore Science, College of Animal Science and Technology, Southwest University, Chongqing 400715, ChinaChongqing Key Laboratory of Herbivore Science, College of Animal Science and Technology, Southwest University, Chongqing 400715, ChinaChongqing Key Laboratory of Herbivore Science, College of Animal Science and Technology, Southwest University, Chongqing 400715, ChinaChongqing Key Laboratory of Herbivore Science, College of Animal Science and Technology, Southwest University, Chongqing 400715, ChinaChongqing Key Laboratory of Herbivore Science, College of Animal Science and Technology, Southwest University, Chongqing 400715, ChinaDeciphering the gastrointestinal microbial response to oral SS DNA vaccines with different doses is helpful for identifying the mechanism for effective utilization of the vaccine for improving animal production. Here, we conduct a comparative study with different doses of vaccine (control: empty plasmid; low dose: 1 × 10<sup>7</sup> CFU vaccine; high dose: 1 × 10<sup>12</sup> CFU vaccine) using goat as a case to investigate the potential of somatostatin vaccination from the entire gastrointestinal microbiota perspective. Our results show that body weight gain and slaughter rate are greater in the L_SS group than in the C_SS group. Compared with the C_SS group, the GH concentration is reduced, while the SS concentration is elevated in the cecum of L_SS goats. Moreover, the SCFAs concentration is elevated in the L_SS goats, the acetate molar proportion is lower in the rumen, the proportion of the acetate is decreased, and propionate is increased in the cecum of L_SS goats. Our data indicate that the low-dose somatostatin vaccine possesses a more efficient improvement in the productivity of goats, emphasizing that the dosage should be considered to reach its optimal effect on the host. Moreover, we find that different doses of the SS vaccination select distinct microbial communities in the gastrointestinal tract. Beta diversity analysis shows a significant interaction. Microorganisms capable of converting nutrients, including <i>Ruminococcacease</i>, <i>Butyrivibrio</i>, <i>Akkermansia</i>, and <i>Lachnospiraceae</i> are enriched, altering the gastrointestinal fermentation response to SS DNA vaccination of ruminants. Moreover, the correlation analysis results revealing these biomarkers have a close association with the phenotypes of productivity. These results imply that somatostatin immunoneutralization might directly alter the gastrointestinal tract commensal bacterial structure, improving gastrointestinal homeostasis, and, thus, modifying the fermentability and effected hormone level to improve the productivity of goats. Our study extends the understanding of the somatostatin vaccine regulation of ruminants’ growth through the entire gastrointestinal microbial perspective.https://www.mdpi.com/2076-2615/15/5/728fermentationgastrointestinal microbiotagoatsomatostatin vaccination
spellingShingle Xiaoli Zhang
Juncai Chen
Siqi Zhang
Bingni Wei
Yanguo Han
Zhongquan Zhao
Insight into the Potential of Somatostatin Vaccination with Goats as a Model: From a Perspective of the Gastrointestinal Microbiota
Animals
fermentation
gastrointestinal microbiota
goat
somatostatin vaccination
title Insight into the Potential of Somatostatin Vaccination with Goats as a Model: From a Perspective of the Gastrointestinal Microbiota
title_full Insight into the Potential of Somatostatin Vaccination with Goats as a Model: From a Perspective of the Gastrointestinal Microbiota
title_fullStr Insight into the Potential of Somatostatin Vaccination with Goats as a Model: From a Perspective of the Gastrointestinal Microbiota
title_full_unstemmed Insight into the Potential of Somatostatin Vaccination with Goats as a Model: From a Perspective of the Gastrointestinal Microbiota
title_short Insight into the Potential of Somatostatin Vaccination with Goats as a Model: From a Perspective of the Gastrointestinal Microbiota
title_sort insight into the potential of somatostatin vaccination with goats as a model from a perspective of the gastrointestinal microbiota
topic fermentation
gastrointestinal microbiota
goat
somatostatin vaccination
url https://www.mdpi.com/2076-2615/15/5/728
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