Wyniki wyszukiwania

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The effects of supplementing diets with Atractylodes macrocephala Koidz rhizomes on growth performance and immune function in piglets

100%

Xu C. L., Zhao Y. F., Shang X. Y., Niu W. N.

Journal of Animal and Feed Sciences

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2012

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tom 21

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nr 2

The rhizome of Atractylodes macrocephala Koidz (baizhu in Chinese, AMK) is a well-known traditional Chinese medicine that has long been used as a digestive and tonic. The experiment was conducted to investigate the effect of baizhu powder on the growth performance and immune function of piglets. Duroc × Landrace×Yorkshire piglets (n=72, half males and half females, 42 days of age, liveweight 14.82±0.17 kg) were randomly allocated to three treatments: control, control+AMK either ground (GMD=180 μm), or micronized (GMD=5.59 μm), for 30 days. The results showed that supplementation with micronized baizhu significantly increased average daily gain (ADG) (P<0.05) and decreased (P<0.05) the feed/gain and diarrhoea ratios compared with the control group. Pigs given 80 mesh baizhu had a lower (P<0.05) diarrhoea ratio than those fed the control diet. Supplementation with 80 mesh baizhu and micronized baizhu significantly increased (P<0.05) both concanavalin- (ConA) and lipopolysaccharide (LPS)-induced splenocyte and peripheral lymphocyte proliferation, serum IgG, IL-1, and IL-2 concentrations (P<0.05) compared with the control group. In addition, supplementation with micronized baizhu significantly enhanced (P<0.05) PR-39 mRNA expression compared with the control group. The results indicate that baizhu could ameliorate metabolic status and regulate immune function to improve the growth performance of piglets, and that super-fine comminution may improve its medicinal efficiency.

2

Effect of dietary bovine lactoferrin on lipid peroxidation and activities, and mRNA levels of antioxidant enzymes of piglets

88%

Xu C. L., Wang Y. Z., Liu J. X., Yao G. J., Feng J.

Journal of Animal and Feed Sciences

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2006

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tom 15

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nr 4

609-620

The experiment was conducted to evaluate effect of dietary bovine lactoferrin (bLF) on lipid peroxidation and activities as well as mRNA levels of antioxidant enzymes of piglets. Duroc×Landrace×Yorkshire crossbred female piglets (n=120, 35 days of age, liveweight 9.70±0.71 kg) were fed a diet containing 0, 1250, or 2500 mg/kg bLF for 30 days. After completion of the feeding experiment, twelve female piglets with 4 animals in each treatment were randomly selected to determine malondialdehyde (MDA) and total antioxidant capacity (TAOC) levelsczinc- superoxide dismutase (CuZnSOD), glutathione perioxidase (GPx), catalase (CAT) activities in serum and liver, and CuZnSOD, GPx and CAT mRNA levels in liver. Results showed that piglets treated with 2500 mg/kg bLF significantly increased (P<0.05) TAOC levels, the activities of GPx, CuZnSOD and CAT, and mRNA levels of CuZnSOD, GPx and CAT, and decreased (P<0.05) the contents of MDA as compared with control. Supplementation with 1250 mg/kg bLF also increased (P<0.05) the activities of CuZnSOD, GPx and CAT and mRNA levels of GPx and CAT, and decreased (P<0.05) the contents of MDA as compared with control, but the effect was not better than that of dietary addition of 2500 mg/kg bLF (P<0.05). The study indicated that addition of bLF improved the antioxidant function of piglets by up-regulation of mRNA levels and activities of certain antioxidant enzymes associated with free radicals metabolism.

3

Effect of dried roots of Astragalus membranaceus in the diets of young growing pigs on growth performance and immune function

76%

Hu Y. L., Xu C. L., Wang Y. Z., Li Y. J., Liu J. X., Feng J.

Journal of Animal and Feed Sciences

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2006

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tom 15

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nr 4

599-607

The experiment was conducted to investigate the effect of Astragalus powder prepared by using different comminution techniques on growth performance and immune function of pigs. Duroc×Landrace×Yorkshire young growing pigs (n=90, female, 60 days of age, liveweight 21.88±1.26 kg) were randomly allocated to three treatments. Each treatment had three replicates with ten pigs per pen. The basal diets were not supplemented or supplemented (5 g/kg) with 80 mesh Astragalus (180 μm), or micron Astragalus (6.32 μm), respectively; the feeding experiment lasted 30 days. After completion of the feeding experiment, three animals from each treatment were chosen to determine the effect of Astragalus on immune function. Results showed that supplementation with micron Astragalus significantly increased (P<0.05) average daily gain (ADG), both Concanavalin (ConA) and lipopolysaccharide (LPS)-induced splenocyte and peripheral lymphocyte proliferation, and significantly increased (P<0.05) serum IgG, IgA, IL-1α and IL-2 concentrations compared with the control groups. Supplementation with 80 mesh Astragalus only increased (P<0.05) serum IgA, IL-1α and IL-2 concentrations compared with control. The results indicated that micron Astragalus was more effective than 80 mesh Astragalus in improving growth performance and enhancing immune function of pigs.

Ograniczanie wyników

3 Journal of Animal and Feed Sciences

3 Xu C. L.

2 Feng J.

2 Liu J. X.

2 Wang Y. Z.

1 Hu Y. L.

1 Li Y. J.

1 Niu W. N.

1 Shang X. Y.

1 Yao G. J.

1 Zhao Y. F.

1 2012

2 2006

The effects of supplementing diets with Atractylodes macrocephala Koidz rhizomes on growth performance and immune function in piglets

Effect of dietary bovine lactoferrin on lipid peroxidation and activities, and mRNA levels of antioxidant enzymes of piglets

Effect of dried roots of Astragalus membranaceus in the diets of young growing pigs on growth performance and immune function