Molecular Nutrition

Effects of Saccharomyces cerevisiae Culture on Growth Performance, Apparent Availability of Nutrients and Intestinal Bacteria Flora of 817 Broiler Chickens

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  • 1. College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450002, China;
    2. Henan Yihong Shancheng Biological Technology Co., Ltd., Wuzhi 454950, China

Received date: 2017-01-01

  Online published: 2017-07-05

Abstract

This experiment was conducted to evaluate the effects of effects of Saccharomyces cerevisiae culture (SC) on growth performance, apparent availability of nutrients and intestinal bacteria of 817 broiler chickens. A total of 600 healthy one-day-old 817 brolier chickens with similar body weight were randomly divided into 5 groups with 6 replicates per group and 20 chicks per replicate. The chickens in control group were fed a basal diet, those in antibiotics group were fed the basal diet supplemented with 20 mg/kg sulfuric acid colistin and 2.6 mg/kg flavomycin, and those in trial groups Ⅰ, Ⅱ and Ⅲ were fed the basal diet supplemented with 2 500, 5 000 and 7 500 mg/kg SC, respectively. The experiment lasted for 60 days. The results showed as follows: 1) during 1 to 21 days of age, average daily gain (ADG) and average daily feed intake (ADFI) in trial groups Ⅱ and Ⅲ were significantly increased than those in control group (P<0.05), but no significant difference were observed when compared with antibiotics group (P>0.05); during 22 to 60 days of age and 1 to 60 days of age, ADG in trial group Ⅱ was significantly higher than that in control group (P<0.05), and ADFI was significantly higher than that in antibiotics group (P<0.05); compared with control group, feed to gain ratio and mortality in trial groups were not significantly changed (P>0.05), while downward trends were found during 1 to 60 days of age(0.05≤P<0.10). 2) Compared with control group, trial groups Ⅱ and Ⅲ significantly improved apparent availability of total phosphorus (P<0.05); no significant differences were found in apparent availability of crude protein and calcium among groups (P>0.05). 3) Compared with control group, trial group Ⅰ significantly decreased the number of E.coli in cecum (P<0.05) and achieve the level of antibiotics group (P>0.05); compared with control group and antibiotics group, the number of Lactobacillus in cecum of trial group Ⅱ as well as the number of Bifidobacteria in the jejunum of trial group Ⅲ were significantly increased (P<0.05), respectively. The results indicate that the supplementation of SC in diet at proper level can improve ADFI and ADG of broiler chickens, decrease feed to gain ratio, enhance total phosphorus apparent availability, promote the growth of Bifidobacteria and Lactobacillus, and inhabit the growth of E.coli; the optimal supplemental level of SC is 5 000 mg/kg, and its growth promotion effect is the best, which is better than antibiotics.

Cite this article

DING Xiaojuan, ZHANG Xiaotu, WANG Shiqiong, CHEN Guanhua, LI Xiao, WANG Fengjiu, LIANG Zhenxian, WANG Zhixiang . Effects of Saccharomyces cerevisiae Culture on Growth Performance, Apparent Availability of Nutrients and Intestinal Bacteria Flora of 817 Broiler Chickens[J]. Chinese Journal of Animal Nutrition, 2017 , 29(7) : 2391 -2398 . DOI: 10.3969/j.issn.1006-267x.2017.07.022

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