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Effects of Compound Additives with Glucose Oxidase and Selenium Yeast on Performance and Immune Indexes in Broilers

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  • 1. State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing 100193, China;
    2. Institute of Feed Control of Beijing, Beijing 100012, China

Received date: 2014-11-05

  Online published: 2015-04-21

Abstract

The experiment was conducted to investigate the effects of compound additives including glucose oxidase enzyme (GOD) and yeast selenium on performance, immune organ indexes and serum protein indexes of broilers in large-scale farming conditions. A total of 5 000 one-day-old Arbor Acres (AA) broilers were randomly allotted to two groups (control group and experimental group). Each group contained 4 replicates with 625 broilers per replicate. In control group, the broilers were fed a corn-soybean basal diet, while in experimental group, broilers were fed the basal diet with 0.2% compound additives which contained GOD and yeast selenium. The experiment lasted for 42 days. The results showed that, 1) performance: compared with control group, the average daily feed intake (ADFI), average daily gain (ADG) of experimental group were significantly higher (P<0.05). ADFI increased by 2.58%, 1.55% and 1.83%,and ADG increased by 1.67%, 6.93% and 6.66% at 1 to 21 days of age, 22 to 42 days of age and 1 to 42 days of age of broilers, respectively. The feed/gain (F/G) of experimental group was significantly lower than that in control group (P<0.05), reduced by 3.36%, 5.13% and 4.44%, respectively. The mortality of experimental group significantly reduced at 1 to 42 days of age (P<0.05). 2) Slaughter performance: at the age of 21 days, the slaughter rate, eviscerated rate, seml-eviscerated rate of experimental group were 2.35%, 4.11% and 3.23% higher than those in control group (P<0.05). There was no significant difference in slaughter performance at 42 days of age between 2 groups (P>0.05). 3) Immune organs indexes: the bursal index of experimental group was significantly increased at 21 days of age (P < 0.05). There were no significant differences in spleen and thymus index between experimental and control groups (P>0.05). At the age of 42 days, compared with the control group, the thymus index of experimental group was significantly higher (P<0.05), and spleen index and bursal index were a little higher in experimental group than those in control group (P>0.05). 4) Serum index: total protein content in serum of experimental group was significantly higher than that in control group at the age of 21 days of broilers (P<0.05), and globulin content in serum was significantly higher at 42 days of age (P<0.05). The urea nitrogen content in serum of experimental group was significantly lower than that in control group at the age of 21 and 42 days (P<0.05). In conclusion, the compound additives with glucose oxidase enzyme and yeast selenium can improve the performance, reduce mortality, increase index of immune organs, and decrease serum urea nitrogen content of broilers.

Cite this article

XING Huan, SUN Chunyang, LUAN Sujun, SA Renna, ZHANG Hongfu, DING Meifang . Effects of Compound Additives with Glucose Oxidase and Selenium Yeast on Performance and Immune Indexes in Broilers[J]. Chinese Journal of Animal Nutrition, 2015 , 27(4) : 1236 -1242 . DOI: 10.3969/j.issn.1006-267x.2015.04.030

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