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| Effect of Compound Plant Essential Oil on Performance and Intestinal Microflora of Yellow-Feathered Broilers |
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| DOI：10.16768/j.issn.1004-874X.2023.06.014 |
| Author Name | Affiliation | | HE Jianan 1,2, HE Shunian 3,4, KANG Huahua 2
, FU Dejia 1,2, FAN Zhihong 3,4,
ZENG Xianjun 3,4, CHEN Jie 3,4, PENG Xinyu 2 | 1. 仲恺农业工程学院动物科技学院，广东 广州 510225；2. 广东省农业科学院动物卫生研究所 /
广东省畜禽疫病防治研究重点实验室 / 农业农村部兽用药物与诊断技术广东科学观测实验站 /
广东省中兽药工程技术研究中心，广东 广州 510640；3. 广州市江丰实业股份有限公司，
广东 广州 510510；4. 广州市江丰实业翁源有限公司，广东 韶关 512600 |
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| Abstract: |
| 【Objective】The trial explores the effect of compound plant essential oil from the nutmeg and basill on the
performance and intestinal microflora of yellow-feathered broilers.【Method】3 942 1-day-old Jiangcun yellow broilers were
divided into three treatments groups (low-dose compound essential oil group, high-dose compound essential oil group and blank
control group). The experiment lasted for 60 days. At the age of 60 days, all broilers were weighed, and the number of survival
chickens, the number of dead and unqualified chickens, feed consumption of each replicates were recorded, and the percentage
of survival chickens, weight gain and feed-gain ratio were calculated. At the same time, 5 chickens were randomly selected
from each group and killed with neck cut. The contents of jejunum and cecum were respectively extracted, and bacterial nucleic
acid was extracted, the 16S rDNA V3-V4 variable region was high-throughput sequencing to analyze the intestinal microflora
of jejunum and cecum of broilers.【Result】The feed-gain ratio of the high dose group and the low dose group was 2.40,
which was significantly lower than that of the blank control group (2.71, P<0.01), and the feed conversion rate was increased by
11.4%. The results of jejunum microflora analysis showed that Firmicutes were the dominant bacteria at phylum level followed
by Actinobacteriota, and Lactobacillus was the dominant bacteria at genus level. The relative abundance of Verrucomicrobiota
in jejunum in high-dose and low-dose groups was significantly lower than that in blank control group (P<0.05). The relative
abundance of Aeriscardovia, Bifidobacterium and Weissella in jejunum of compound essential oil low-dose group was
significantly higher than that of blank control group (P<0.05). The results of cecal microflora analysis showed that Firmicutes
and Bacteroidetes were dominant bacteria at phylum level. The relative abundance of Clostridia-vadinBB60-group and Alistipes
in high-dose and low-dose compound essential oil groups was significantly lower than that in blank control group (P<0.05),
and that of Clostridia-UCG-014 in high-dose compound essential oil group was significantly lower than that in blank control
group (P<0.05). The relative abundance of Bacteroides in high dose compound essential oil group was significantly higher than
that in blank control group and low dose compound essential oil group (P<0.05), and the relative abundance of Ruminococcustorques-group in low dose compound essential oil group was significantly higher than that in blank control group (P<0.05).
【Conclusion】Feeding nutmeg and basil compound essential oil can promote the growth of beneficial bacteria in jejunum and
cecum of yellow-feathered broilers, inhibit the proliferation of harmful bacteria, maintain the balance of bacteria, and promote
intestinal health, and obviously improve the performance of yellow-feathered broilers. |
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