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Astragalus and Astragalus Polysaccharide on performance of laying hens , oxidation resistance and immunological properties of Research

Author: ZuoZhaoYun
Tutor: YangWeiRen
School: Shandong Agricultural University
Course: Animal Nutrition and Feed Science
Keywords: Astragalus APS Production performance Antioxidant properties Immunity Performance
CLC: S831.5
Type: Master's thesis
Year: 2011
Downloads: 216
Quote: 0
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Abstract

This study aimed to explore the different levels of Astragalus add flour and astragalus polysaccharides on performance of laying hens, egg quality, immune and antioxidant properties. 27 weeks of age were selected 945 Highland brown hens were randomly divided into seven treatments with five replicates of 27. Control group was fed the basal diet, the test group were in the control group based on the added 5,10,15 g / kg astragalus powder, 100,200,300 mg / kg APS. Pre-test period of 7 d, a trial period of 70 d. Statistics once a week average daily feed intake, egg production, average egg weight, egg mass and feed egg ratio, and in the first test and 70 d 35 d when on egg quality index, serum antioxidant index, Newcastle and avian influenza antibody titers and the various blood physiological parameters were measured. The results showed that: Adding Astragalus and Astragalus Polysaccharide on laying hens daily feed intake, egg production, average egg weight and feed egg ratio and egg shell thickness, shape index, yolk color, yolk weight and test the first 35 d albumen weight were not significantly affected (P gt; 0.05). However, 1%, 1.5% astragalus powder significantly increased testing for 36-70 d and test all of the egg mass (P lt; 0.05), 300 mg / kg APS group significantly increased testing for 70 d egg protein content (P lt; 0.05). Diets supplemented with different levels of Astragalus powder and astragalus polysaccharides can significantly increase serum TSOD, T-AOC, GSH-Px and yolk TSOD activity (P lt; 0.05), significantly decreased serum and egg yolk content of MDA, egg yolk cholesterol concentration (P lt ; 0.05). When testing the first 35 d, 1% astragalus powder significantly increased serum GSH-Px activity and reduced the content of MDA (P lt; 0.05). 1% astragalus powder group and 100 mg / kg APS group yolk cholesterol concentration was significantly lower than the control group (P lt; 0.05). Add 100,200 mg / kg of blood granulocytes APS group were significantly higher and 0.5% astragalus powder group (P lt; 0.05). 1.0% astragalus powder group and 300 mg / kg APS group Newcastle disease antibody titer and 0.5% astragalus powder group Re-5 H5 subtype of avian influenza antibody titers were significantly higher (P lt; 0.05). Test first 70 d, the 0.5% and 1% astragalus powder serum T-AOC and TSOD activity was significantly higher than the 1.5% astragalus powder group and the control group (P lt; 0.05); 1% astragalus powder serum MDA levels were significantly ( P lt; 0.05) than the control group and the other groups astragalus powder, and blood cells were significantly higher in the middle (P lt; 0.05). With the added level of astragalus powder increased from 0 to 1.5%, APS added level rises from 0 to 300 mg / kg, test the first 35 d and 70 d of laying hens serum T-AOC activity and MDA content and the yolk MDA and cholesterol concentrations showed a linear and / or quadratic effect (P lt; 0.05). Right astragalus powder and effect of APS comparative analysis shows that both the test the first 35 d and 70 d yolk cholesterol concentration and MDA content and test the first 70 d yolk TSOD activity effect was not significant (P gt; 0.05) . Astragalus Powder Group trials first 35 d of serum GSH-Px activity (P = 0.036) and 70 d of serum TAOC activity (P lt; 0.001) were significantly higher than APS group, while APS group enhanced testing for 35 d yolk TSOD active role in significantly better than adding astragalus powder group. These results suggest that: diets astragalus and APS can improve performance of laying hens, improve immune function, improve the antioxidant capacity of serum and yolk, egg yolk cholesterol lowering and astragalus and optimum addition of APS levels were 1.0% and 200 mg / kg; astragalus powder group in raising hens superior antioxidant capacity APS group.

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