Effects of Oregano Oil Instead of Antibiotics and Zinc Oxide on Growth Performance, Diarrhea Frequency, Intestinal Morphology and Plasma Antioxidant Indices of Weaned Piglets

WEN Xiaolu; WANG Li; YANG Xuefen; GAO Kaiguo; JIANG Zongyong; HU Youjun

doi:10.3969/j.issn.1006-267x.2020.09.018

2020 , Vol. 32 >Issue 9: 4102 - 4109

DOI: https://doi.org/10.3969/j.issn.1006-267x.2020.09.018

Effects of Oregano Oil Instead of Antibiotics and Zinc Oxide on Growth Performance, Diarrhea Frequency, Intestinal Morphology and Plasma Antioxidant Indices of Weaned Piglets

WEN Xiaolu ,
WANG Li ,
YANG Xuefen ,
GAO Kaiguo ,
JIANG Zongyong ,
HU Youjun

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Guangdong Provincial Key Laboratory of Animal Breeding and Nutrition, Guangdong Public Laboratory of Animal Breeding and Nutrition, Key Laboratory of Animal Nutrition and Feed Science in South China of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China

Received date: 2020-03-16

Online published: 2020-09-17

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Abstract

The purpose of this study was to investigate the effects of oregano oil instead of antibiotic and zinc oxide on growth performance, diarrhea frequency, intestinal morphology and plasma antioxidant indices of weaned piglets. Forty-eight "Duroc×Landrace×Yorkshire" weaned piglets at the age of (21±1) days were randomly allotted to 2 groups (antibiotic group and oregano oil group) with 6 replicates, and 4 piglets per replicate. In antibiotic group, zinc oxide and antibiotic mixture were added in a basal diet, while in oregano oil group, oregano oil was added in the basal diet. The test period was 28 days. The results showed that oregano oil instead of antibiotics and zinc oxide significantly increased the diarrhea frequency of piglets on days 1 to 14 post-weaning (P<0.05), but had no significant effects on average daily gain, average daily feed intake and feed/gain of piglets on days 1 to 14, days 15 to 28 and days 1 to 28 post-weaning (P>0.05). Compared with the antibiotics group, the average daily gain of piglets on days 1 to 14 post-weaning increased by 9.6%, and the average daily feed intake increased by 5.5%. Oregano oil instead of antibiotics and zinc oxide had no significant effects on the morphology of duodenum, jejunum and ileum of piglets (P>0.05). On day 15 post-weaning, the superoxide dismutase (SOD) activity and total antioxidant capacity (T-AOC) in plasma were significantly increased when oregano oil instead of antibiotics and zinc oxide (P<0.05). Therefore, under the condition of this experiment, oregano oil instead of antibiotics and zinc oxide significantly increases the diarrhea frequency on days 1 to 14 post-weaning, but does not affect the growth performance and diarrhea frequency of while period, as well as improves the antioxidant performance of weaned piglets.

Key words： oregano oil; weaned piglets; antibiotics; zinc oxide; growth performance; antioxidant performance

Cite this article

WEN Xiaolu , WANG Li , YANG Xuefen , GAO Kaiguo , JIANG Zongyong , HU Youjun . Effects of Oregano Oil Instead of Antibiotics and Zinc Oxide on Growth Performance, Diarrhea Frequency, Intestinal Morphology and Plasma Antioxidant Indices of Weaned Piglets[J]. Chinese Journal of Animal Nutrition, 2020 , 32(9) : 4102 -4109 . DOI: 10.3969/j.issn.1006-267x.2020.09.018

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