›› 2018, Vol. 45 ›› Issue (4): 933-939.doi: 10.16431/j.cnki.1671-7236.2018.04.012

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Effect of Aqueous Extract of Fermented Astragalia and Glycyrrhiza on Growth Performance, Immune Organ Indexes and Meat Quality of 817 Broilers

ZHANG Xiaojing1,2,3, SHI Hongtao1,2,3, NIU Xiangnan1, SONG Yuzhen1,2,3, TANG Fayin1,2,3, BIAN Chuanzhou1,2,3, QIAO Hongxing1,2,3   

  1. 1. Henan University of Animal Husbandry and Economy, Zhengzhou 450046, China;
    2. Engineering Laboratory of Microbial Bioconversion Traditional Chinese Medicine of Henan Province, Zhengzhou 450046, China;
    3. Key Laboratory of Probiotics Fermentation Traditional Chinese Medicine of Zhengzhou City, Zhengzhou 450046, China
  • Received:2017-09-26 Online:2018-04-20 Published:2018-04-25

Abstract:

The purpose of this experiment was to study the effects of aqueous extract of fermented Astragalia and Glycyrrhiza on growth performance,immune organ indexes and meat quality of 817 broilers.90 one-day-old healthy 817 broilers were chosen and randomly divided into three groups by one-factor completely random design with 3 repetitions each group and 10 broilers per repetition.The broilers in control group were fed basal diet + fresh water,that in groups Ⅰ and Ⅱ were fed basal diet + unfermented or fermented Astragalia and Glycyrrhiza with a dilution ratio of 1:2 000,respectively.On the 21 and 42 d,the average daily gain,F/G,the immune organ indexes and the meat quality such as muscle nutrient content,the meat color and drip loss were all measured.The results showed that during 1 to 42 days,compared with control group, the average daily gain of groups Ⅰ and Ⅱ increased by 5.09% (P < 0.05) and 12.72% (P < 0.05) and F/G was reduced by 10.84% (P < 0.05) and 22.09% (P < 0.05),respectively.At the age of 21 days, compared with control group,the spleen and bursa of Fabricius indexes of groups Ⅰ and Ⅱ were raised by 4.40% (P > 0.05),13.19% (P > 0.05) and 32.39% (P < 0.05),37.09% (P < 0.05),respectively.At the age of 42 days,the spleen and bursa of Fabricius indexes were raised by 31.97% (P < 0.05),50.82% (P < 0.05) and 16.25% (P > 0.05),38.13% (P < 0.05),respectively.The liver index of groups Ⅰ and Ⅱ at 21 and 42 days were higher than control group.At the age of 42 days, compared with control group,the moisture content (P < 0.05), crude fat content (P < 0.05), a* value and inosinic acid content of breast muscle in groups Ⅰ and Ⅱ were all raised, b* value and drip loss were declined.The moisture content,crude protein content,a* value and inosinic acid content (P < 0.05) of thigh muscle in groups Ⅰ and Ⅱ were higher,both b* value and drip loss (P < 0.05) were declined.The differences in the breast and thigh muscle of L* values among the groups was not significant (P > 0.05).In conclusion, aqueous extract of fermented Astragalia and Glycyrrhiza could improve the growth performance,immune indexes and meat quality of 817 broilers,and the effect was better than the unfermented group.

Key words: aqueous extract of fermented Astragalia and Glycyrrhiza; broiler; growth performance; immune organ index; meat quality

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