Effects of Polysaccharides-Rich Extract from Gracilaria lemaneiformis on Growth Performance, Antioxidant Capacity, Immune Function, and Meat Quality in Broiler Chickens.

IF 1.8 4区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Journal of Poultry Science Pub Date : 2023-01-01 DOI:10.2141/jpsa.2023018
Shengwang Jiang, Chaoyun Yang, Yintao Xiao, Saizhen Zheng, Qian Jiang, Jiashun Chen
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Abstract

This study investigated the effects of dietary supplementation with Gracilaria lemaneiformis polysaccharides (GLPs) on the growth performance, antioxidant capacity, immune function, and meat quality of broiler chickens. A total of 320 one-day-old Arbor Acres broiler chicks were individually weighed and randomly assigned to four groups of eight replicate cages (10 broilers per cage). Birds were fed a basal diet supplemented with 0 (control), 1,000, 2,000, or 4,000 mg/kg GLPs. Compared to that of the control group, dietary supplementation with 2,000 mg/kg GLPs linearly increased the average daily weight gain during days 0-42 (P < 0.05) and linearly decreased the feed to gain ratio during days 1-21 and 22-42 (P < 0.05). Broilers fed GLP-supplemented diets showed linear (P < 0.05) and quadratic (P < 0.05) increases in serum superoxide dismutase (P < 0.05), glutathione peroxidase, and catalase activities in the liver, whereas GLP supplementation decreased serum and liver malondialdehyde concentrations (P < 0.05). A linear increase in serum catalase activity was observed following supplementation with 2,000 or 4,000 mg/kg GLPs (P < 0.05). Broilers fed GLP-supplemented diets showed linear (P < 0.05) and quadratic (P < 0.05) increases in serum immunoglobulin (Ig) A, IgG, interleukin (IL)-6, IL-1β, IL-10, and interferon-γ concentrations (P < 0.05), and a trend towards linear improvement in IL-4 levels (P = 0.089). Dietary GLP supplementation increased the Lactobacillus spp. population compared to that of the control group (P < 0.05) and 2,000 and 4,000 mg/kg of GLPs nearly decreased the population of E. coli in the cecum (P = 0.056). Therefore, dietary GLP supplementation may improve broiler growth performance by altering antioxidant capacity, immune function, and the gut microbiota composition. Considering the effects of different doses of GLP on the above parameters, 2,000 mg/kg of GLPs was identified as the best dose.

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富多糖江蓠提取物对肉鸡生长性能、抗氧化能力、免疫功能和肉品质的影响。
本试验旨在研究饲粮中添加江蓠多糖(GLPs)对肉鸡生长性能、抗氧化能力、免疫功能和肉品质的影响。选取320只1日龄爱拔益加肉仔鸡,分别称重,随机分为4组,每组8个重复笼(每个笼10只鸡)。在基础饲粮中分别添加0(对照)、1,000、2,000和4,000 mg/kg glp。与对照组相比,饲粮中添加2000 mg/kg GLPs可线性提高0 ~ 42天的平均日增重(P < 0.05),线性降低1 ~ 21天和22 ~ 42天的料重比(P < 0.05)。肉鸡肝脏超氧化物歧化酶(P < 0.05)、谷胱甘肽过氧化物酶和过氧化氢酶活性呈线性(P < 0.05)和二次(P < 0.05)显著升高,血清和肝脏丙二醛浓度显著降低(P < 0.05)。添加2000和4000 mg/kg GLPs后,血清过氧化氢酶活性呈线性升高(P < 0.05)。肉鸡血清免疫球蛋白(Ig) A、IgG、白细胞介素(IL)-6、IL-1β、IL-10和干扰素-γ浓度呈线性(P < 0.05)和二次(P < 0.05)升高(P < 0.05), IL-4水平呈线性升高趋势(P = 0.089)。与对照组相比,饲粮中添加GLP增加了乳酸菌种群数量(P < 0.05), 2000和4000 mg/kg GLP几乎减少了盲肠中大肠杆菌种群数量(P = 0.056)。因此,饲粮中添加GLP可能通过改变抗氧化能力、免疫功能和肠道菌群组成来改善肉仔鸡的生长性能。考虑不同剂量GLP对上述参数的影响,确定GLP的最佳剂量为2000 mg/kg。
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来源期刊
Journal of Poultry Science
Journal of Poultry Science AGRICULTURE, DAIRY & ANIMAL SCIENCE-
CiteScore
2.80
自引率
13.30%
发文量
26
审稿时长
12 months
期刊介绍: The Journal of Poultry Science will publish original reports and reviews which either make an original contribution to fundamental science or are of obvious application to the industry. Subjects which are covered include: breeding and genetics, nutrition and feeds, physiology, reproduction, immunology, behavior, environmental science, management and housing welfare, processing and products, and health in poultry. Submission of original articles to the Journal is open to all poultry researchers. The review articles are invited papers written by international outstanding researchers. Articles will be published in English, American style.
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