β-葡聚糖对仔猪生长性能、抗氧化及肠道微生物的影响OA北大核心CSTPCD
Effects of β-glucan on growth performance,antioxidant,and intestinal microorganisms of piglets
试验旨在探究在仔猪饲粮中添加β-葡聚糖对其生长性能、血清抗氧化能力及肠道微生物的影响,确定β-葡聚糖在仔猪生产中的最适添加水平.试验选择21日龄、体重相近的断奶仔猪144头,随机分为4组,每组3个重复,每个重复12头仔猪.对照组饲喂基础饲粮,试验A组、B组和C组在基础饲粮中分别添加50、100和200 mg/kg的β-葡聚糖.预试期1 w,正式试验期4 w.结果显示,与对照组相比,试验B组仔猪的末重、平均日增重、平均日采食量均显著增加(P<0.05),料重比显著降低(P<0.05);试验C组仔猪平均日采食量显著提升(P<0.05);试验A组、B组和C组仔猪的腹泻率均极显著降低(P<0.01).与对照组相比,试验B组和试验C组仔猪血清过氧化氢酶活性极显著提高(P<0.01);试验B组血清超氧化物歧化酶活性显著提高(P<0.05),丙二醛含量显著降低(P<0.05).与对照组相比,试验B组和试验C组仔猪肠道微生物的Simpson指数和Chao1指数显著提高(P<0.05);试验B组仔猪肠道中厚壁菌门和拟杆菌门相对丰度极显著提高(P<0.01),梭菌属和链球菌属相对丰度显著降低(P<0.05);试验A组和试验B组仔猪肠道中乳杆菌属相对丰度极显著增加(P<0.01).研究表明,饲粮中添加β-葡聚糖可以提高仔猪的生长性能,增强机体抗氧化功能,改善肠道健康,β-葡聚糖的添加量为100 mg/kg时较为适宜.
The experiment aimed to investigate the effects of adding β-glucan to piglets diets on the growth performance,serum antioxidant capacity,and intestinal microorganisms of piglets,and to determine the optimal level of β-glucan supplementation in piglets production.A total of 144 weaned piglets with similar body weights at 21 days of age were randomly divided into four groups,with three replicates per group and 12 piglets per replicate.The control group was fed a basal diet,while experimental groups A,B,and C were supplemented with 50,100,and 200 mg/kg of β-glucan in the basal diet,respectively.The preliminary trial lasted for one week,and the formal trial period was four weeks.The results showed that compared to the control group,the final weight,average daily weight gain,and average daily feed intake of piglets in experimental group B were significantly increased(P<0.05),and the feed conversion ratio was significantly reduced(P<0.05).The average daily feed intake of piglets in experimental group C was significantly increased(P<0.05).The diarrhea rate of piglets in groups A,B,and C was extremely reduced(P<0.01).Compared to the control group,the activity of catalase in the serum of piglets in experimental groups B and C was extremely enhanced(P<0.01).The activity of superoxide dismutase in the serum of group B was significantly increased(P<0.05),and the level of malondialdehyde was significantly reduced(P<0.05).Compared to the control group,the Simpson index and Chao1 index of intestinal microorganisms in piglets of experimental groups B and C were significantly increased(P<0.05).The relative abundance of Firmicutes and Bacteroidetes in the gut of piglets in group B were extremely increased(P<0.01),while the relative abundance of Clostridium and Streptococcus were significantly reduced(P<0.05).The relative abundance of Lactobacillus in the gut of piglets in groups A and B were extremely significantly increased(P<0.01).The study indicates that the addition of β-glucan in the diet can improve the growth performance of piglets,enhance the antioxidant function of the body,and improve intestinal health,with an appropriate addition level of β-glucan at 100 mg/kg.
潘锋钢;易蓉
宜春职业技术学院,江西 宜春 336000
畜牧业
β-葡聚糖仔猪生长性能抗氧化能力肠道微生物
β-glucanpigletsgrowth performanceantioxidant capacityintestinal microorganisms
《饲料研究》 2024 (023)
31-35 / 5
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