Effects of alginic acid oligosaccharides on growth performance,immune indexes,and intestinal development of broilers
The purpose of this experiment was to study the effects of alginic acid oligosaccharides(AOS)added to drinking water on the growth performance,carcass weight,immune organ index,intestinal morphology and small intestinal digestive enzyme activity of broilers.A total of 360 one-day-old Cobb 500 broilers were randomly divided into two groups,with 18 replicates in each group and ten broilers in each replicate.The control group was feed a basal diet,and AOS group was feed a basal diet and added 200 mg/L alginic acid oligosaccharides to drinking water from 1 to 21 days of age.The experimental period was 42 days.The results showed that compared with the control group,the average daily gain of broilers in AOS group was significantly increased(P＜0.05),and the feed to gain ratio was significantly decreased from 1 to 21 days(P＜0.05).During the whole experiment period,the average daily gain of broilers in the AOS group was significantly increased(P＜0.05).Compared to the control group,the carcass weight of broilers in the AOS group was significantly increased at 21 and 42 days(P＜0.05),as well as the spleen index and the bursa of Fabricius index at 21 days(P＜0.05).The villus height of the small intestine in the AOS group broilers was significantly higher at 21 and 42 days,along with a significant increase in the villus-to-crypt ratio and intestinal lipase activity at 21 days(P＜0.05).Studies show that adding the 200 mg/L alginic acid oligosaccharides group to drinking water can improve the growth performance,immunity,intestinal development and digestion of broilers,thereby improving the economic benefits of breeding.
alginic acid oligosaccharidesbroilersgrowth performanceimmune indexesintestinal development
国家科技期刊平台
NSTL
万方数据
