Effects of Essential Oil and Compound Organic Acids on Growth Performance, Serum Biochemical Indices and Intestinal Health of Broilers

QI Mengdi; LI Tie; ZHANG Keying; WANG Jianping; BAI Shiping; ZENG Qiufeng; PENG Huanwei; LYU Jirong; HUANG Yaming; DING Xuemei

doi:10.3969/j.issn.1006-267x.2022.09.021

2022 , Vol. 34 >Issue 9: 5652 - 5666

DOI: https://doi.org/10.3969/j.issn.1006-267x.2022.09.021

RESEARCH PAPER

Effects of Essential Oil and Compound Organic Acids on Growth Performance, Serum Biochemical Indices and Intestinal Health of Broilers

QI Mengdi ,
LI Tie ,
ZHANG Keying ,
WANG Jianping ,
BAI Shiping ,
ZENG Qiufeng ,
PENG Huanwei ,
LYU Jirong ,
HUANG Yaming ,
DING Xuemei

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1. Key Laboratory of Animal Disease-Resistance Nutrition of Sichuan Province, Key Laboratory of Animal Disease-Resistance Nutrition and Feed Science of Ministry of Agriculture and Rural Affairs, Key Laboratory of Animal Disease-Resistance Nutrition of Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China;
2. Chengdu Dadhanke Biotechnology Co., Ltd., Chengdu 611130, China

Received date: 2022-03-22

Online published: 2022-10-17

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Abstract

This experiment was conducted to investigate the effects of dietary essential oils and compound organic acids on growth performance, serum biochemical indices and intestinal health of broilers. A total of 416 one-day-old Arbor Acres (AA) white-feathered broilers were randomly divided into 4 groups:control group, broilers were fed a basal diet; essential oil group (EO group), broilers were fed the basal diet+essential oil (150 g/t); compound organic acid group (COA group), broilers were fed the basal diet+compound organic acid (1.5 kg/t); combined essential oil and compound organic acid group (EO×COA group), broilers were fed the basal diet+essential oil (150 g/t)+compound organic acid (1.5 kg/t). Each group was divided into 8 replicates with 13 broilers in each replicate. The experiment lasted for 42 d and was divided into 2 stages-1 to 21 days of age and 22 to 42 days of age. The results showed as follows:1) dietary essential oil and compound organic acids had no significant effects on average daily gain, average daily feed intake and feed to gain ratio of broilers (P>0.05). 2) Dietary essential oil significantly increased the contents of total protein and albumin in serum of broilers at 21 days of age (P<0.05), and significantly increased the content of albumin in serum of broilers at 42 days of age (P<0.05). Dietary compound organic acids significantly decreased the activity of alkaline phosphatase in serum of broilers at 42 days of age (P<0.05), and tended to increase the serum albumin content (P=0.095). Dietary essential oil and compound organic acids had significant interaction on the serum albumin content of broilers at 42 days of age (P<0.05), which showed that the supplementation of essential oil and compound organic acids increased serum albumin content of broilers at 42 days of age. 3) Dietary essential oil significantly increased the jejunal villus height and villus height to crypt depth ratio of broilers at 21 days of age (P<0.05). Dietary compound organic acid significantly increased the jejunum villus height to crypt depth ratio of broilers at 21 days of age (P<0.05), and tended to increase duodenum villus height of broilers at 21 days of age (P=0.083). Dietary essential oil and compound organic acids had significant interaction on the duodenal crypt depth of broilers at 21 days of age and duodenal villus height to crypt depth ratio of broilers at 42 days of age (P<0.05), which showed that the supplementation of essential oil and compound organic acids decreased he duodenal crypt depth of broilers at 21 days of age, and increased duodenal villus height to crypt depth ratio of broilers at 42 days of age. 4) Dietary essential oil significantly increased the jejunal lipase and trypsin activities of broilers at 21 days of age (P<0.05), and significantly increased jejunal amylase activities of broilers at 42 days of age (P<0.05). Dietary compound organic acid significantly increased the jejunal lipase activity of broilers at 21 days of age and jejunal amylase, lipase and trypsin activities of broilers at 42 days of age (P<0.05). 5) The content of isovalerate in cecal digesta of broilers at 21 days of age was significantly increased by adding essential oil (P<0.05). The contents of acetic acid and total short-chain fatty acid in cecal digesta of broilers at 21 days of age and the contents of propionic acid and total short-chain fatty acid in cecal digesta of broilers at 21 days of age were significantly increased by adding compound organic acids (P<0.05). Dietary essential oil and compound organic acids had significant interaction on the contents of propionic acid isovaleric acid in cecal digesta of broilers at 21 days of age and the contents of acetic acid, propionic acid, butyric acid and total short-chain fatty acid in cecal digesta of broilers at 42 days of age (P<0.05). In conclusion, dietary essential oil and compound organic acids have no effects on growth performance, but can improve serum biochemical indices and intestinal morphology, improve digestive enzyme activities, and increase the contents of total volatile fatty acids in cecal digesta of broilers. To sum up, the combination of the two is more beneficial to intestinal health of broilers.

Key words： broilers; essential oil; compound organic acids; growth performance; intestinal health

Cite this article

QI Mengdi , LI Tie , ZHANG Keying , WANG Jianping , BAI Shiping , ZENG Qiufeng , PENG Huanwei , LYU Jirong , HUANG Yaming , DING Xuemei . Effects of Essential Oil and Compound Organic Acids on Growth Performance, Serum Biochemical Indices and Intestinal Health of Broilers[J]. Chinese Journal of Animal Nutrition, 2022 , 34(9) : 5652 -5666 . DOI: 10.3969/j.issn.1006-267x.2022.09.021

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