Effects of High Dose of Ethoxyquin on Growth Performance, Serum Biochemical Indices, Antioxidant Capacity, Organ Index and Meat Quality of Growing-Finishing Pigs

GAI Xiangrong, HE Dongting, YANG Wenjun, HAN Miaomiao, LAI Wenqing, ZHANG Liying

doi:10.3969/j.issn.1006-267x.2018.09.035

2018 , Vol. 30 >Issue 9: 3643 - 3651

DOI: https://doi.org/10.3969/j.issn.1006-267x.2018.09.035

Molecular Nutrition

Effects of High Dose of Ethoxyquin on Growth Performance, Serum Biochemical Indices, Antioxidant Capacity, Organ Index and Meat Quality of Growing-Finishing Pigs

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State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing 100193, China

Received date: 2018-02-07

Online published: 2018-09-20

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Abstract

This experiment was conducted to examine the effects of different supplemental levels of ethoxyquin (EQ) on growth performance, serum biochemical indices, antioxidant capacity, organ index and meat quality of growing-finishing pigs. A total of 180 Duroc×Landrace×Yorkshire pigs with average body weight of (31.98±2.34) kg were randomly assigned to 5 groups with 6 replicates of 6 pigs each. Pigs in 5 groups were fed corn-soybean meal basal diets supplemented with 0, 150, 300, 750 and 1 500 mg/kg EQ, respectively. The trail lasted for 98 days. The results showed as follows:1) supplementation with 150 to 1 500 mg/kg EQ had no significant effects on growth performance, organ index and meat quality of growing-finishing pigs (P>0.05). 2) Serum alkaline phosphatase activity and total bilirubin (TBIL) content were decreased with EQ supplemental level increasing on day 70 of the trail (linear, P<0.05). Serum TBIL content was increased with EQ supplemental level increasing on day 98 of the trail (linear, P<0.05). 3) Serum total antioxidant capacity, activities of glutathione peroxidase and catalase were decreased with EQ supplemental level increasing on day 70 and day 98 of the trail (linear, P<0.05). Serum malondialdehyde content was increased with EQ supplemental level increasing on day 98 of the trail (quadratic, P<0.05). These results indicate that supplementation with 150 to 1 500 mg/kg EQ has no significant effects on growth performance and meat quality of growing-finishing pigs, supplementation with 750 and 1 500 mg/kg EQ can lead to liver cell damage of growing-finishing pigs, and supplementation with 300 to 1 500 mg/kg EQ can reduce the serum antioxidant capacity. Therefore, the recommended dose of EQ is 150 mg/kg in the diet for growing-finishing pigs.

Key words： ethoxyquin; growing-finishing pigs; growth performance; serum biochemical indices; antioxidant capacity; organ index; meat quality

Cite this article

GAI Xiangrong, HE Dongting, YANG Wenjun, HAN Miaomiao, LAI Wenqing, ZHANG Liying . Effects of High Dose of Ethoxyquin on Growth Performance, Serum Biochemical Indices, Antioxidant Capacity, Organ Index and Meat Quality of Growing-Finishing Pigs[J]. Chinese Journal of Animal Nutrition, 2018 , 30(9) : 3643 -3651 . DOI: 10.3969/j.issn.1006-267x.2018.09.035

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