China Animal Husbandry and Veterinary Medicine ›› 2022, Vol. 49 ›› Issue (12): 4614-4624.doi: 10.16431/j.cnki.1671-7236.2022.12.011

• Nutrition and Feed • Previous Articles     Next Articles

Effects of Fermented Andrographis Powder on Production Performance, Serum Biochemical Indexes, Immune Related Indexes, Antioxidant Indexes and Fatty Acid Contents of Muscle in Muscovy Ducks

ZHANG Qiang1, LIU Zhenni1, LIAO Qiang2, LEI Xiaowen1, KONG Zhiwei1, XIE Hualiang1, TAN Donghai1, LI Jianjun1, ZHONG Yunping1   

  1. 1. Ganzhou Animal Husbandry and Fisheries Research Institute, Gannan Academy of Sciences, Ganzhou 341002, China;
    2. Ganzhou Research Institute of Agricultural Sciences, Gannan Academy of Sciences, Ganzhou 341000, China
  • Received:2022-05-01 Online:2022-12-05 Published:2022-12-01

Abstract: 【Objective】 The purpose of this experiment was to study the effects of fermented Andrographis powder on production performance, serum biochemical indexes, immune related indexes, antioxidant indexes and fatty acid content of muscle in Muscovy ducks.【Method】 Andrographis powder was fermented by compound bacteria (the mass ratio of yeast and lactic acid bacteria was 1:1), and its microecological function and medicinal value were analyzed according to the changes of components after fermentation.450 15-day-old Black feather muscovy ducks weighing about 250 g were randomly divided into 5 groups, 6 repetitions in each group, 15 ducks each repetition.The ducks in control group Ⅰ were fed with basic diet, while in control group Ⅱ were added with 3% Andrographis powder in basic diet, in fermentation group Ⅰ, fermentation group Ⅱ and fermentation group Ⅲ were added with 1%, 3% and 5% fermented Andrographis powder in basic diet respectively.The pre-feeding period was 7 d and the feeding period was 48 d.The muscovy ducks were weighed at the age of 16, 21, 42 and 70 days respectively.At the age of 70 days, 6 muscovy ducks (1 muscovy duck for each repetition) were randomly selected from each group for slaughter determination.The samples of pectoral muscle in left and blood were collected to determine serum biochemical indexes, immune related indexes, antioxidant indexes and muscle fatty acid content.【Result】 ① After Andrographis powder fermented by compound bacteria, the number of viable bacteria was more than 2.0×108 CFU/g and the crude fiber content was decreased, but the difference was not significant (P>0.05).② The feed weight ratio of 16-70 days old in fermentation group Ⅱ was significantly or extremely significantly lower than that of control group Ⅰ and fermentation group Ⅲ (P<0.05;P<0.01).③ The slaughter rates of fermentation group Ⅰ and Ⅱ were significantly higher than those of control group Ⅰ and Ⅱ (P<0.05).④ The serum IL-2 level of muscovy ducks in fermentation group Ⅱ, Ⅲ and control group Ⅱ were extremely significantly higher than those in control group Ⅰand fermentation group Ⅰ (P<0.01).⑤ The serum level of malondialdehyde in fermentation group Ⅱ was extremely significantly or significantly lower than that of control group Ⅰ and control group Ⅱ (P<0.01;P<0.05).⑥ The contents of unsaturated fatty acids, polyunsaturated fatty acid and essential fatty acids in muscle of fermentation group Ⅱ were significantly or extremely significantly higher than those of control group Ⅰ (P<0.05;P<0.01).【Conclusion】 Compared with the basic diet group, 3% fermented Andrographis powder could significantly improve the production performance, serum IL-2 level, unsaturated fatty acid and essential fatty acid content in muscle of muscovy ducks, reduce lipid peroxidation and improve antioxidant capacity of muscovy ducks.In addition, the effects of 3% fermented Andrographis powder on slaughter rate and antioxidant capacity of muscovy ducks were significantly better than that of unfermented Andrographis powder in the same proportion.

Key words: Andrographis powder; muscovy ducks; immunity; antioxidant indexes; production performance; fatty acid contents

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