文献类型： 外文期刊

作者： Li, S. Y. ² ; Ru, Y. J. ¹ ; Liu, M. ² ; Xu, B. ² ; Peron, A. ¹ ; Shi, X. G. ³ ;

作者机构： 1.Danisco Anim Nutr, Singapore 117525, Singapore

2.Henan Acad Agr Sci, Henan Inst Anim Sci, Yangling 450002, Henan, Peoples R China

3.Danisco Anim Nutr, Guangzhou Peace Plaza 560065, Peoples R China

关键词： Essential oils;Weaner pigs;Performance;Immunity;Microflora

期刊名称：LIVESTOCK SCIENCE （ 影响因子：1.943； 五年影响因子：2.252 ）

ISSN： 1871-1413

年卷期： 2012 年 145 卷 1-3 期

页码：

收录情况： SCI

摘要： In the present study, a total of 240 piglets weaned at 28 days were randomly allocated to four treatments at 36 days of age: a control (no antibiotic growth promoters), and control supplemented with increasing levels of an encapsulated essential oils (EO) product (50,100 or 150 g/tonne of feed). The average bodyweight at 36 days of age was 10.9 +/- 0.14 kg. The main active components present in the EO product were thymol and cinnamaldehyde. Each treatment was composed of 6 replicates, with 10 pigs per replicate. Feed intake, body weight gain and feed conversion ratio were measured over a 35-day period. On day 35, blood samples were taken from 2 pigs per replicate in order to determine the levels of immunoglobulins (IgG, IgA and IgM) and complement components (C3 and C4). In addition, fecal samples from 3 piglets per replicate were taken for the determination of Lactobacillus and E coli counts. The results showed that adding EO to the control diet reduced the occurrence of diarrhea and decreased E coli counts in feces (P<0.05). Feeding EO also increased lymphocyte transformation and leucocyte phagocytosis rates, as well as the levels of IgA, IgM, C3 and C4 in blood (P<0.05). The addition of EO at 100 and 150 g/tonne improved daily weight gain and feed conversion ratio (FCR) of weaner pigs (P<0.05). The results demonstrated that the encapsulated EO can improve performance, immunity and gut microflora of newly weaned pigs. (C) 2012 Elsevier B.V. All rights reserved.