Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (3): 547-555.DOI: 10.3969/j.issn.1004-1524.2023.03.07

• Animal Science • Previous Articles     Next Articles

Effects of Hyriopsis cumingii polysaccharides on growth performance, antioxidant activity and immune function in growing broiler

XIA Lunbin1,2(), MA Longlong1, QIAO Deliang1,2, HE Yanfei1,2, JIANG Ping1,2   

  1. 1. College of Biological and Pharmaceutical Engineering, West Anhui University, Lu’an 237012, Anhui, China
    2. Engineering Laboratory of Anhui Province for Conservation and Sustainable Utilization of Chinese Medicine Resources, Lu’an 237012, Anhui, China
  • Received:2021-12-14 Online:2023-03-25 Published:2023-04-07

Abstract:

The objective of this study was to investigate the effects of Hyriopsis cumingii polysaccharides (HCP) on growth performance, antioxidant activity and immune function in growing broiler. A total of 240 one-day-old Arbor Acres (AA) broiler chickens were randomly allotted into 4 groups, with 6 replicates in each group and 10 chickens in each replicate. Normal control group (HCP-0) was fed with basal diet, while low dose group (HCP-1), medium dose group (HCP-2) and high dose group (HCP-3) were supplemented with 200, 400 and 800 mg·kg-1 HCP in basal diet, respectively. The experimental period was 42 days. The results showed as follows:1) Compared with HCP-0 group, the ADG of broilers in HCP-2 group and HCP-3 group was extremely significantly increased (P<0.01), and there was no significant difference in ADFI and F/G among all groups(P>0.05). 2) Compared with the HCP-0 group, the activities of T-AOC, T-SOD and GSH-Px in serum of broilers in HCP-2 group and HCP-3 group were significantly increased(P<0.05 or P<0.01), the content of MDA was significantly decreased(P<0.05), and only T-SOD activity of broilers in HCP-1 group was significantly increased(P<0.01), the activities of CAT showed no significant difference among all groups (P>0.05). 3) The spleen index of broilers in HCP-2 group was significantly increased compared with HCP-0 group (P<0.05), while there was no significant difference among other groups (P>0.05), and there was no significant difference in bursa of fabricius index and thymus index among all groups (P>0.05). 4) On the 21st day of experiment, compared with HCP-0 group, the content of IgG in serum of broilers in HCP-2 group was significantly increased (P<0.05), and the content of IgA in serum of broilers in HCP-1 group, HCP-2 group and HCP-3 group were significantly increased (P<0.05); At the 42nd day of the experiment, the content of IgG in the serum of broilers in HCP-2 group and HCP-3 group was extremely significantly increased compared with HCP-0 group and HCP-1 group (P<0.01), there was no significant difference between HCP-1 group and HCP-0 group(P>0.05); At the 21st and 42nd day of the experiment, the content of IgM in serum of broilers showed no significant difference among all groups (P>0.05). Combined with the above results, dietary HCP supplementation can significantly improve ADG, antioxidant activity and immune function of broilers, and the appropriate amount of HCP added to the feed of broilers was 514-679 mg·kg-1by regression equation analysis under this experimental conditions.

Key words: Hyriopsis cumingii polysaccharides, growth performance, antioxidant index, imunoglobulin, broiler

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