SPECIAL ECONOMIC ANIMAL NUTRITION AND FEED

Effects of Dietary Ginger Powder Supplemental Level on Wool Production, Serum Hormone, Biochemical, Immune and Antioxidant Indices of Angora Rabbits

  • LIU Gongyan ,
  • JIANG Wenxue ,
  • YANG Liping ,
  • LIU Ce ,
  • GAO Shuxia ,
  • SUN Haitao ,
  • CHANG Ying ,
  • BAI Liya
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  • 1. Shandong Key Laboratory of Animal Disease Control and Breeding, Institute of Animal Husbandry and Veterinary, Shandong Academy of Agricultural Sciences, Jinan 250100, China;
    2. Shandong Animal Husbandry Association, Jinan 250100, China

Received date: 2021-04-27

  Online published: 2021-12-16

Abstract

The purpose of this experiment was to study the effects of dietary ginger powder supplemental level on wool production, serum hormone, biochemical, immune and antioxidant indices of angora rabbits, so as to provide theoretical reference for the use of ginger powder as a green feed additive in the production of Angora rabbits. A total of 160 Chinese Angora rabbits aged 8 months and with similar body weight were selected and randomly divided into 4 groups with 40 rabbits in each group (half male and half female). Rabbits in the 4 groups were fed complete formula feeds with the ginger powder supplemental levels of 0 (control), 10, 20 and 30 g/kg for a wool period (73 days), respectively. The results showed as follows:1) dietary supplemental level of ginger powder had significant effects on the final body weight, feed consumption, hair follicle density and wool yield of Angora rabbits (P<0.05). The final body weight, feed consumption, hair follicle density and wool yield of the experimental rabbits were increased with the increase of ginger powder supplemental level, and adding 20 g/kg ginger powder can improve the wool yield. 2) The levels of thyroxine (T4), insulin-like growth factor-1 (IGF-1) and melatonin (MTL) in serum of Angora rabbits were significantly affected by dietary supplemental level of ginger powder (P<0.05). Compared with the control group, the levels of IGF-1 and MTL in serum in the experimental groups were significantly increased (P<0.05). When ginger powder supplemental level was 30 g/kg, the serum T4 level in the experimental groups was significantly higher than that in the control group (P<0.05). 3) Dietary supplemental level of ginger powder had significant effects on the contents of total cholesterol (TC), high density lipoprotein (HDL), low density lipoprotein (LDL) and immunoglobulin A (IgA) in serum of Angora rabbits (P<0.05). Compared with the control group, the contents of serum TC, HDL and LDL were significantly decreased and the content of serum IgA was significantly increased in the experimental groups supplemented with 20 or 30 g/kg ginger powder (P<0.05). 4) Dietary supplemental level of ginger powder had significant effects on serum superoxide dismutase (SOD) activity, total antioxidant capacity (T-AOC) and malondialdehyde (MDA) content (P<0.05). Compared with the control group, the serum SOD activity in the experimental group was significantly increased (P<0.05), while the serum MDA content was significantly decreased (P<0.05). In addition, the serum T-AOC in the experimental groups supplemented with 20 or 30 g/kg ginger powder was significantly increased (P<0.05). In conclusion, ginger powder as the feed additive of Angora rabbits, can regulate lipid metabolism, improve serum hormone levels and antioxidant capacity, and then increase the wool yield, and the suitable dosage is 20 g/kg for Angora rabbits.

Cite this article

LIU Gongyan , JIANG Wenxue , YANG Liping , LIU Ce , GAO Shuxia , SUN Haitao , CHANG Ying , BAI Liya . Effects of Dietary Ginger Powder Supplemental Level on Wool Production, Serum Hormone, Biochemical, Immune and Antioxidant Indices of Angora Rabbits[J]. Chinese Journal of Animal Nutrition, 2021 , 33(12) : 7012 -7020 . DOI: 10.3969/j.issn.1006-267x.2021.12.041

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