Effects of Licorice Stem and Leaf Forage on Growth and Physiology of Hotan Sheep

This study explored the impact of licorice stem and leaf forage in the diet of meat sheep on their growth performance, physiological parameters, immunity, and gut microbiota. Conducted in the Hotan region of Xinjiang, the experiment involved 40 healthy local Hotan sheep (5–6 months old) that were ra...

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Main Authors: Peng Yin, Weiqing Kong, Linyuan Cheng, Nana Shi, Shonghan Wang, Fei Guo, Haitao Shen, Hua Yao, Hongbin Li
Format: Article
Language:English
Published: MDPI AG 2025-05-01
Series:Animals
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Online Access:https://www.mdpi.com/2076-2615/15/10/1459
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author Peng Yin
Weiqing Kong
Linyuan Cheng
Nana Shi
Shonghan Wang
Fei Guo
Haitao Shen
Hua Yao
Hongbin Li
author_facet Peng Yin
Weiqing Kong
Linyuan Cheng
Nana Shi
Shonghan Wang
Fei Guo
Haitao Shen
Hua Yao
Hongbin Li
author_sort Peng Yin
collection DOAJ
description This study explored the impact of licorice stem and leaf forage in the diet of meat sheep on their growth performance, physiological parameters, immunity, and gut microbiota. Conducted in the Hotan region of Xinjiang, the experiment involved 40 healthy local Hotan sheep (5–6 months old) that were randomly assigned to four groups, with both corn stalks and corn grain partially substituted at varying levels (30%, 40%, and 50%) by licorice stems and leaves for 80 days. Daily feed intake and refusal were recorded to assess feeding behavior and efficiency, while body weight was measured every 20 days to monitor growth performance. On day 80, blood samples were collected via venipuncture for biochemical and immune function analysis, followed by slaughter to obtain meat samples for quality assessment. Results showed that dietary licorice supplementation significantly improved growth performance. Sheep in the 40% replacement group had the highest final body weight and average daily gain (<i>p</i> < 0.05), indicating better feed efficiency. These findings suggest that replacing corn stalks and grain with licorice stems and leaves at a 40% ratio can significantly improve growth performance. Biochemical results showed improved protein metabolism and lipid profiles, with increased TP and ALB and decreased TC and TG levels. Immune indicators, including IgG, IgM, IgA, and IL-6, were also elevated in licorice-fed groups. In summary, licorice stems and leaves demonstrated clear nutritional and immunological benefits, especially at the 40% inclusion level. Gut microbiota analysis showed that licorice stems and leaves increased the relative abundance of Firmicutes while reducing Bacteroidota. At the genus level, UCG_005 and Bacteroides increased with higher licorice concentrations, whereas Treponema decreased. Pearson correlation analysis indicated that UCG_005 was positively correlated with TP, ALB, IgM, and IL-6 and negatively correlated with TG and TNF-α. These findings suggest that using licorice stems and leaves as a replacement for both corn stalks and corn grain modulates gut microbiota composition and is closely associated with immune and biochemical responses in sheep.
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spelling doaj-art-075ea7c5304643648026b5ff3f7eef892025-08-20T03:14:35ZengMDPI AGAnimals2076-26152025-05-011510145910.3390/ani15101459Effects of Licorice Stem and Leaf Forage on Growth and Physiology of Hotan SheepPeng Yin0Weiqing Kong1Linyuan Cheng2Nana Shi3Shonghan Wang4Fei Guo5Haitao Shen6Hua Yao7Hongbin Li8Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Life Sciences, Shihezi University, Shihezi 832003, ChinaKey Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Life Sciences, Shihezi University, Shihezi 832003, ChinaKey Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Life Sciences, Shihezi University, Shihezi 832003, ChinaKey Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Life Sciences, Shihezi University, Shihezi 832003, ChinaKey Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Life Sciences, Shihezi University, Shihezi 832003, ChinaSchool of Life Sciences, Zhuhai College of Science and Technology, Zhuhai 519040, ChinaKey Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Life Sciences, Shihezi University, Shihezi 832003, ChinaKey Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Life Sciences, Shihezi University, Shihezi 832003, ChinaKey Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Life Sciences, Shihezi University, Shihezi 832003, ChinaThis study explored the impact of licorice stem and leaf forage in the diet of meat sheep on their growth performance, physiological parameters, immunity, and gut microbiota. Conducted in the Hotan region of Xinjiang, the experiment involved 40 healthy local Hotan sheep (5–6 months old) that were randomly assigned to four groups, with both corn stalks and corn grain partially substituted at varying levels (30%, 40%, and 50%) by licorice stems and leaves for 80 days. Daily feed intake and refusal were recorded to assess feeding behavior and efficiency, while body weight was measured every 20 days to monitor growth performance. On day 80, blood samples were collected via venipuncture for biochemical and immune function analysis, followed by slaughter to obtain meat samples for quality assessment. Results showed that dietary licorice supplementation significantly improved growth performance. Sheep in the 40% replacement group had the highest final body weight and average daily gain (<i>p</i> < 0.05), indicating better feed efficiency. These findings suggest that replacing corn stalks and grain with licorice stems and leaves at a 40% ratio can significantly improve growth performance. Biochemical results showed improved protein metabolism and lipid profiles, with increased TP and ALB and decreased TC and TG levels. Immune indicators, including IgG, IgM, IgA, and IL-6, were also elevated in licorice-fed groups. In summary, licorice stems and leaves demonstrated clear nutritional and immunological benefits, especially at the 40% inclusion level. Gut microbiota analysis showed that licorice stems and leaves increased the relative abundance of Firmicutes while reducing Bacteroidota. At the genus level, UCG_005 and Bacteroides increased with higher licorice concentrations, whereas Treponema decreased. Pearson correlation analysis indicated that UCG_005 was positively correlated with TP, ALB, IgM, and IL-6 and negatively correlated with TG and TNF-α. These findings suggest that using licorice stems and leaves as a replacement for both corn stalks and corn grain modulates gut microbiota composition and is closely associated with immune and biochemical responses in sheep.https://www.mdpi.com/2076-2615/15/10/1459licorice stems and leavesmeat sheepgrowth performancemeat qualityimmune performanceintestinal flora
spellingShingle Peng Yin
Weiqing Kong
Linyuan Cheng
Nana Shi
Shonghan Wang
Fei Guo
Haitao Shen
Hua Yao
Hongbin Li
Effects of Licorice Stem and Leaf Forage on Growth and Physiology of Hotan Sheep
Animals
licorice stems and leaves
meat sheep
growth performance
meat quality
immune performance
intestinal flora
title Effects of Licorice Stem and Leaf Forage on Growth and Physiology of Hotan Sheep
title_full Effects of Licorice Stem and Leaf Forage on Growth and Physiology of Hotan Sheep
title_fullStr Effects of Licorice Stem and Leaf Forage on Growth and Physiology of Hotan Sheep
title_full_unstemmed Effects of Licorice Stem and Leaf Forage on Growth and Physiology of Hotan Sheep
title_short Effects of Licorice Stem and Leaf Forage on Growth and Physiology of Hotan Sheep
title_sort effects of licorice stem and leaf forage on growth and physiology of hotan sheep
topic licorice stems and leaves
meat sheep
growth performance
meat quality
immune performance
intestinal flora
url https://www.mdpi.com/2076-2615/15/10/1459
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