Molecular Nutrition

Effects of Tribulus terrestris Extract on Growth Performance and Serum Antioxidant Indexes of Weaned Piglets

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  • Yunnan Province Key Laboratory of Animal Nutrition and Feed, College of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China

Received date: 2018-02-06

  Online published: 2018-09-20

Abstract

This experiment was conducted to investigate the effects of Tribulus terrestris extract (TTE) on growth performance, nutrients apparent digestibility, serum antioxidant indexes and serotonin (5-HT) content of weaned piglets. One hundred and twenty-eight (37±2) days of age "Druoc×Landrace×Yorkshire" weaned piglets were randomly divided into 4 groups with 4 replicates per group and 8 piglets per replicate. Piglets were fed the basal diets supplemented with 0, 125, 250 and 500 mg/kg TTE, respectively. The trial lasted for 28 days. At 51 and 65 days of age, the fasting weight were measured, and blood and faeces were collected to determine the serum antioxidant indexes, 5-HT content and nutrients apparent digestibility. The results showed as follows:1) average daily gain (ADG) and average daily feed intake (ADFI) of weaned piglets were increased and the ratio of feed to gain (F/G) was decreased with dietary TTE level increased. Compared with control group, ADG in 500 mg/kg group was significantly increased by 18.65%, 17.62% and 18.10% at 37 to 51, 51 to 65 and 37 to 65 days of age, respectively (P<0.05). 2) Dietary TTE increased the apparent digestibility of dry matter (DM), crude protein (CP) and ash of weaned piglets. Compared with control group, the apparent digestibility of CP in 250 mg/kg group was significantly increased by 5.38% at 49 to 51 days of age (P<0.05), and the apparent digestibility of ash in 250 mg/kg group was significantly increase by 22.96% and 52.46% at 49 to 51 and 63 to 65 days of age, respectively (P<0.05). 3) Dietary TTE increased the activities of glutathione peroxidase (GSH-Px) and catalase (CAT) in serum of weaned piglets and decreased the content of malondialdehyde (MDA) in serum. Compared with control group, the activity of CAT in serum in 250 and 500 mg/kg groups was significantly increased by 99.42% and 114.53% at 51 days of age, respectively (P<0.05), and the content of MDA in serum in 500 mg/kg group was significantly decreased by 46.98% (P<0.01). The content of MDA in serum in 250 and 500 mg/kg groups was significantly lower than that in control group by 53.57% and 57.74% at 65 days of age, respectively (P<0.01). 4) Dietary TTE increased the content of 5-HT in serum of weaned piglets. Compared with control group, the content of 5-HT in serum in 250 mg/kg group was significantly increased by 33.81% at 65 days of age (P<0.01). The results suggest that adding 500 mg/kg TTE in the diet can significantly improve ADG and decrease F/G of weaned piglets; and adding 250 mg/kg TTE in the diet can increase apparent digestibility of CP and Ash and the content of 5-HT in serum, improve antioxidant capability and reduce stress of weaned piglets.

Cite this article

LI Zelei, LI Meiquan, LIU Shuiling, CHE Litao, JIANG Xiaoxu, GUO Rongfu . Effects of Tribulus terrestris Extract on Growth Performance and Serum Antioxidant Indexes of Weaned Piglets[J]. Chinese Journal of Animal Nutrition, 2018 , 30(9) : 3662 -3669 . DOI: 10.3969/j.issn.1006-267x.2018.09.037

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