Acta Veterinaria et Zootechnica Sinica ›› 2023, Vol. 54 ›› Issue (3): 1109-1123.doi: 10.11843/j.issn.0366-6964.2023.03.023

• ANIMAL NUTRITION AND FEEDS • Previous Articles     Next Articles

Effects of Zearalenone on Growth Performance, Gastrointestinal Fermentation and Microbiota Community Structure of Goats

YAN Qiongxian1, CHEN Wenxun1,2, HUI Haoyang3, PENG Can1, TANG Shaoxun1*, ZHOU Xiaoling3, TAN Zhiliang1   

  1. 1. Hunan Provincial Key Laboratory of Nutritional Physiology and Metabolic Process, CAS Key Laboratory for Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China;
    2. University of Chinese Academy of Science, Beijing 100049, China;
    3. College of Animal Science and Technology, Tarim University, Alaer 843300, China
  • Received:2022-05-12 Online:2023-03-23 Published:2023-03-21

Abstract: This experiment was conducted to investigate the effects of zearalenone (ZEA) addition with different dosages on growth performance, gastrointestinal fermentation pattern and bacterial community structure of Xiangdong black goats. Twenty-four female Xiangdong black goats with similar body weight ((12.82±2.03) kg) were randomly divided into three groups and fed with 0, 100 and 500 μg·kg-1DM ZEA diet, respectively. The pre-feeding period lasted for one week, and the formal period was kept for four weeks. At the end of the experimental period, all the experimental animals were slaughtered, rumen and colon digesta were collected, and microbial fermentation products were detected by liquid chromatography. DNA of the rumen and colon digesta was extracted and Illumina-Nova sequencing technology was used to analyze the structure of rumen and colon microflora. Compared with the control group, the final body weight, total gain, average daily gain, and dry matter intake of goats were not affected by 100 or 500 μg·kg-1DM ZEA addition (P>0.05). 500 μg·kg-1DM ZEA addition decreased the molar percentage of valerate in colon digesta (P<0.05). Compared to the control group, addition of low dosage of ZEA significantly decreased the Shannon index and Simpson index (P<0.05), and addition of high dosage of ZEA significantly decreased the Simpson index and Shannon’s evenness of rumen bacteria (P<0.05). High dosage of ZEA significantly decreased the relative abundance of Firmicutes in the rumen bacteria (P=0.04). The addition of low dosage of ZEA significantly decreased the relative abundance of Actinobacteriota (P=0.04), and the addition of high dosage of ZEA significantly decreased the relative abundance of Spirochaetota in the colon bacteria(P=0.04).In conclusion, dietary 100 or 500 μg·kg-1DM ZEA did not affect the growth performance and rumen fermentation parameters, but decreased the α diversity and evenness of rumen bacteria. The low-dose ZEA addition affected the relative abundance of Actinobacteriota which was the dominant bacteria in the colon, and the high-dose ZEA addition affected the relative abundance of Firmicutes which was the dominant bacteria in the rumen and Spirochaetota which was the dominant bacteria in the colon of goats.

Key words: zearalenone, goat, growth performance, volatile fatty acid, 16S rRNA sequencing, microbiota diversity

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