RESEARCH PAPER

Effects of Dietary Lipoic acid on Growth Performance, Slaughter Performance, Fat Metabolism and Intestinal Microflora of Broilers

  • LI Jinyan ,
  • NIE Cunxi ,
  • NAN Shanshan ,
  • NIU Junli ,
  • LI Jiacheng
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  • College of Animal Science and Technology, Shihezi University, Shihezi 832000, China

Received date: 2022-03-25

  Online published: 2022-10-17

Abstract

This study was conducted to investigate the effects of dietary lipoic acid on growth performance, slaughter performance, fat metabolism and intestinal microflora of broilers. A total of 128 healthy 14-day-old white-feathered broilers with similar body weight were randomly divided into the control group and the experimental group with 4 replicates per group and 16 broilers per replicate. Broilers in the control group were fed a basal diet, and those in the experimental group were fed the basal diet supplemented with 400 mg/kg lipoic acid. The experiment lasted for 28 days and was divided into two stages of 15 to 28 days of age and 29 to 42 days of age. The results showed as follows:1) compared with the control group, dietary lipoic acid had no significant effects on the growth performance of broilers (P>0.05), but significantly increased the dressing percentage at 28 days of age and the breast muscle percentage at 42 days of age (P<0.05). 2) At 42 days of age, compared with the control group, the contents of total cholesterol and triglyceride in leg muscle of broilers in the experimental group were significantly decreased (P<0.05), while the contents of total cholesterol and triglyceride in breast muscle of broilers in the experimental group were significantly increased (P<0.05). 3) At 28 days of age, compared with the control group, the Shannon index and Simpson index and the relative abundance of uncultured, Shuttleworthia, Enterococcus and Rikenella in cecal microflora of broilers in the experimental group were significantly increased (P<0.05), while the relative abundance of Sutterella, Tyzzerella and Harryflintia in cecal microflora was significantly decreased (P<0.05). At 42 days of age, compared with the control group, the relative abundance of Desulfovibrio and Dielma in cecal microflora of broilers in the experimental group was significantly increased (P<0.05), while the relative abundance of Butyricicoccus was significantly decreased (P<0.05). 4) The triglyceride content in breast muscle of broilers was extremely significantly positively correlated with Sutterella, Desulfovibrio and Dielma (P<0.01); the total cholesterol content in breast muscle was extremely significantly positively correlated with uncultured (P<0.01), but significantly negatively correlated with Butyricicoccus (P<0.05). The triglyceride content in leg muscle of broilers was significantly positively correlated with Shuttleworthia (P<0.05), while significantly negatively correlated with Rikenella and Harryflintia (P<0.05). In conclusion, dietary lipoic acid can regulate fat metabolism and intestinal microflora structure of broilers, and the contents of triglyceride and cholesterol in breast muscle and leg muscle are significantly correlated with the changes of intestinal microflora.

Cite this article

LI Jinyan , NIE Cunxi , NAN Shanshan , NIU Junli , LI Jiacheng . Effects of Dietary Lipoic acid on Growth Performance, Slaughter Performance, Fat Metabolism and Intestinal Microflora of Broilers[J]. Chinese Journal of Animal Nutrition, 2022 , 34(9) : 5730 -5740 . DOI: 10.3969/j.issn.1006-267x.2022.09.028

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