摘要
在中华绒螯蟹(Eriocheri sinensis)的饵料中添加高活性干酵母,使其摄食量分别为0mg/(kg·d)、600.0mg/(kg·d)、800mg/(kg·d)、1 000 mg/(kg·d)、1 200mg/(kg·d)和1 400 mg/(kg·d),连续投喂40 d 后,通过测定供试中华绒螯蟹的体重以及投喂或注射患病中华绒螯蟹组织(浆)的攻毒方法,探讨了口服高活性干酵母对中华绒螯蟹生长速度和抗病力的影响。结果表明,在中华绒螯蟹的饵料中添加高活性干酵母,摄食量达600.0mg/(kg·d)至1 400.0 mg/(kg·d)对中华绒螯蟹的生长有促进作用,对身体与内脏的颜色、形态等没有明显影响;能有效地增强供试中华绒螯蟹的抗病力(等发表)。与对照组相比,经注射攻毒后,各试验组中华绒螯蟹的有效率为28.0%～52.0%,而口服攻毒后,投喂不同剂量高活性干酵母的试验组中华绒螯蟹有效率为45.4%～77.2%,经口服攻毒后的有效率稍高可能与病原体的感染途径和感染数量有关。
Eriocheri sinensis were fed with feed supplemented with high activity yeast cell,whose feeding dose of yeast cell was of ratio 0 mg/(kg·d),600 mg/(kg·d),800 mg/(kg·d),1 000 mg/(kg·d),1 200 mg/(kg·d) and 1 400 mg/(kg·d),respectively.40 days later,in order to find out the influence of the activity yeast cell on the growth rate and disease-resistance of the Eriocheri sinensis,the weight of the Eriocheri sinensis were monitored and the experimental subject were challenged with the histoplasmin of diseased Eriocheri sinensis.The results showed that there was significantly higher growth rate than the control group (t-test,P<0.05)and little change in the color and form of internal organs in Eriocheri sinensis when the feed were supplemented with activity yeast cell at the ratio of 600 mg/(kg·d) to 1 400 mg/(kg·d).Meanwhile,the disease-resistance of the experimental Eriocheri sinensis were highly boosted.Comparing with the control group,the disease-resistance of the orally-challenged group and the injection-challenged group were boosted by 28.0% and 77.2% respectively.There were no significant differences in the survival rate of each experimental group.
出处
《长江大学学报（自然科学版）》
CAS
2005年第5期24-26,共3页
Journal of Yangtze University(Natural Science Edition)
基金
国家自然科学基金(30271032)
