单 位：
湖南省畜牧兽医研究所动物营养与饲养技术研究室;湖南农业大学动物营养研究所
关键词：
直/支链淀粉比;黄羽肉鸡;血液生化指标;后肠微生物菌群
摘 要：
本文旨在研究饲粮直/支链淀粉比对黄羽肉鸡血液生化指标和后肠微生物菌群的影响。试验采用单因子设计,选用29日龄黄羽肉鸡320羽,随机分为4个处理,每处理5个重复,每重复16羽,分别饲喂直/支链淀粉比为0.11、0.23、0.35、0.47的试验饲粮。试验期28d,测定了肉鸡的屠宰性能、血液生化指标和后肠道微生物菌群变化情况。结果表明:饲粮直/支链淀粉比显著影响试鸡的腹脂率(P<0.01)和食后0.5h血液中葡萄糖和胰岛素含量(P<0.05),但对血液乳酸和尿素氮含量无显著影响(P>0.05)。提高饲粮直/支链淀粉比显著增加后肠中肠球菌、乳酸杆菌和双歧杆菌数(P<0.05),显著减少大肠杆菌数(P<0.05)。以上提示饲粮直/支链淀粉比的差异会改变肉鸡体内葡萄糖释放速度和氨基酸代谢的关系,进而影响血液生化指标及后肠道微生物菌群,饲粮适宜直/支链淀粉比有利于肉鸡胴体品质改善和维持后肠微生物平衡。
译 名：
Effects of Dietary Amylose/amylopectin Ratio on Blood Biochemical Parameters and Hindgut Microbial Flora of Yellow Broilers
作 者：
DAI Qiuzhong1 LIU Shaowei1 LI Xiang2 ZHANG Shirui2 JIANG Guitao1(1.Animal Nutrition and Feeding Department,Hunan Institute of Animal Science and Veterinary Medicine,Changsha 410131,China;2.Animal Nutrition Institute,Hunan Agricultural University,Changsha 410128,China)
关键词：
amylose/amylopectin ratio;yellow broilers;blood biochemical parameters;hindgut microbial flora
摘 要：
A single factor experiment was adopted to investigate the effects of dietary amylose/amylopectin ratio on blood biochemical parameters and hindgut microbial flora of yellow broilers.Three hundred and twenty 29-day-old female yellow broilers were randomly allocated to 4 groups with 5 replicates per group and 16 broilers per replicate.Four diets with amylose/amylopectin ratios of 0.11,0.23,0.35 and 0.47 were available ad libitum.The experiment lasted for 28 days.The carcass traits,blood biochemical parameters and hindgut microbial flora of broilers were measured.The results showed that the dietary amylose/amylopectin ratio had significant effects on abdominal fat percentage(P<0.01),postprandial 0.5 h blood glucose and insulin concentration of broilers(P<0.05),but there were no significant effects on blood lactate acid and urea nitrogen concentration of broilers(P>0.05).Hindgut microbial flora analysis showed that increasing dietary amylose/amylopectin ratio significantly increased the number of Enterococcus,Lactobacillus and Bifidobacteria(P<0.05),while significantly reduced the number of Escherichia coli in hindgut of broilers(P<0.05).It suggested that the difference of dietary amylose/amylopectin ratio could change the relationship of in vivo glucose release rate and amino acids metabolism,which led to the change of blood biochemical parameters and hindgut microbial flora of yellow broilers,and an appropriate dietary amylose/amylopectin ratio could contribute to the improvement of carcass traits and keep microbial flora balance in hindgut of broilers.
