摘要
[目的]研究利用啤酒废酵母制备得到的酵母硒对肉鸡免疫器官及组织GSH-Px活力的影响。[方法]选用1日龄平均体重为(42.78±1.08)g的AA商品代肉鸡225羽(公母混合),随机分成5组,每组3次重复,每重复15羽,分别饲喂在基础日粮中添加0.1mg/kg Na2SeO3和0、0.1、0.2、0.3mg/kg酵母硒的日粮,饲养期42d。[结果]21日龄时,0.2或0.3mg/kg酵母硒组的胸腺、脾脏和法氏囊指数显著高于基础日粮组(P<0.05),42日龄时,各处理组间无显著差异;0.2或0.3mg/kg酵母硒可显著提高血清和肝脏中的GSH-Px活力(P<0.05),且硒添加水平与血清和肝脏中的GSH-Px活性呈正相关。[结论]由啤酒废酵母制备的酵母硒可促进肉鸡免疫器官的早期发育,提高组织GSH-Px活力,是一种安全的有机硒源饲料添加剂。
[Objective]This research aimed to study the effect of yeast selenium prepared by waste beer yeast on GSH-Px activity in the immune organs and tissue of broilers.[Method]225 one-day-old AA broilers with the average body weight of（42.78 ± 1.08） g were randomly assigned to five groups with three repetitions,fifteen broilers in each repetition（males and females mixed）.The basal diet was supplemented with 0.1 mg/kg Na2SeO3,0,0.1,0.2 and 0.3 mg/kg yeast selenium respectively to feed broilers for 42 days.[Result]The thymus,spleen and bursa of fabricius index in 0.2 or 0.3 mg/kg yeast selenium group was significantly higher than the basal diet group（P 0.05） on the 21st day,and there was no significant difference between groups on the 42nd day.0.2 or 0.3 mg/kg yeast selenium could significantly increase the GSH-Px activity in the serum and liver（P 0.05）.The level of selenium was positively correlated with GSH-Px activity in the serum and liver.[Conclusion]The yeast selenium could promote the early development of immune organs in chicken and improve the tissue GSH-Px activity.It was a safe source of organic selenium feed additive.
出处
《安徽农业科学》
CAS
北大核心
2010年第4期1846-1848,共3页
Journal of Anhui Agricultural Sciences
基金
浙江省科技厅资助项目(2007C32022)
浙江工商大学研究生科研创新基金项目(1110JQ4209014)
