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Citrus Extract Improves the Absorption and Utilization of Nitrogen and Gut Health of Piglets

by Yiyan Cui 1,2,3,4,5, Zhimei Tian 1,2,3,4,5, Gang Wang 1,2,3,4,5, Xianyong Ma 1,2,3,4,5,* and Weidong Chen 1,2,3,4,5,*
1
Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
2
State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
3
Key Laboratory of Animal Nutrition and Feed Science in South China, Ministry of Agriculture, Guangzhou 510640, China
4
Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
5
Guangdong Engineering Technology Research Center of Animal Meat Quality and Safety Control and Evaluation, Guangzhou 510640, China
*
Authors to whom correspondence should be addressed.
Animals 2020, 10(1), 112; https://doi.org/10.3390/ani10010112
Received: 14 November 2019 / Revised: 3 January 2020 / Accepted: 8 January 2020 / Published: 10 January 2020
(This article belongs to the Section Animal Nutrition)
Weaning can cause weaning stress and reduce the growth performance of piglets. Citrus extract has strong anti-oxidant and anti-inflammatory effects which can improve animal health. The aim of this study was to evaluate the efficacy of citrus extract as a substitute for antibiotics in piglet diets. The results of this study indicate that citrus extract increased the concentrations of plasma essential amino acids, improved intestinal morphology and digestive enzymes activity.
The purpose of this study was to investigate the effects of citrus extract (CE) on plasma free amino acids, intestinal morphology and enzymes activity, fecal nitrogen and phosphorus emissions in piglets. The experiment was performed on 144 weaned piglets (Duroc × Landrace × Large White) divided into three groups. Control (CON), fed a basic diet; Antibiotic (ANTI), fed a basic diet supplemented with 75 g/t chlortetracycline; Citrus extract (CE), fed a basic diet supplemented with 300 mL/t CE. The albumin content of the CE group was significantly higher than the CON group. Compared with the CON and ANTI groups, the CE group had increased concentrations of plasma total essential amino acids and threonine. Compared with the CON group, CE increased the α-aminoadipic acid concentration, while compared with ANTI group, it increased the 3-methylhistidine concentration. Compared with the CON group, the crypt depth of duodenum, jejunum and ileum decreased, and the ratio of villus height to crypt depth of ileum increased in the ANTI and CE groups. CE increased the activity of alkaline phosphatase and lipase in duodenum, and the activity of alkaline phosphatase and trypsin in jejunum. In brief, CE improved the absorption and utilization of nitrogen, intestinal morphology and digestive enzymes activity. View Full-Text
Keywords: citrus extract; piglet; plasma free amino acids; intestinal morphology; intestinal enzymes; ammonia nitrogen; nitrogen; phosphorus citrus extract; piglet; plasma free amino acids; intestinal morphology; intestinal enzymes; ammonia nitrogen; nitrogen; phosphorus
MDPI and ACS Style

Cui, Y.; Tian, Z.; Wang, G.; Ma, X.; Chen, W. Citrus Extract Improves the Absorption and Utilization of Nitrogen and Gut Health of Piglets. Animals 2020, 10, 112.

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