中文摘要：

本试验旨在研究维生素A、D及其相互作用对肉仔鸡生长及组织维生素A、E浓度的影响。试验采用4×4完全随机试验设计，将384只8日龄健康艾维茵雄性肉仔鸡称重后随机分为16个处理组，每个处理组3个重复，每个重复8只。其中，VA设4个添加水平，分别为1500、3000、15000和45000 IU/kg日粮；VD设4个添加水平，分别为500、1250、2500和5000 IU/kg日粮，共构成16个处理组。结果表明，日粮VA水平为3000 IU/kg时，血清VA浓度趋于稳定，生长速度最快；日粮VA水平为45000 IU/kg时，肝脏、肾脏VA浓度显著升高，VE浓度显著下降，生长速度有明显下降的趋势；日粮VA水平为15000 IU/kg时，肝脏、肾脏VA浓度显著上升，同时对VE产生明显的拮抗作用，引起血清、肾脏的VE浓度显著下降；日粮VA水平为1500 IU/kg时，血清、肝脏、肾脏VA浓度及生长速度均呈明显的降低趋势。日粮VD水平在500-5000 IU/kg内增加，对肉仔鸡生长性能无显著影响（P〉0.05）。日粮VA为15000 IU/kg时，肉仔鸡VA有过量的可能；日粮VA为45000 IU/kg时，肉仔鸡VA过量；日粮VA为1500 IU/kg时，肉仔鸡VA有临界缺乏的可能。日粮VA与VD在对血清、肝脏VA浓度的影响方面存在一定互作效应，主要表现在高剂量VD对过量VA有一定拮抗作用。

英文摘要：

The experiment was conducted to elucidate the effects of interaction between VA and VD on growth performance and concentrations of VA and VE of tissues in broiler chickens. Three hundred and eighty-four 8-day old AA male broiler chickens with similar body weight were randomly allotted into 16 treatments with 3 replicates of 8 broilers each. Broilers were fed four levels of dietary VA （1 500,3 000,15 000,and 45 000 IU/kg） and four levels of VD （500,1 000,2 500,and 5 000 IU/kg） in a 4 × 4 × 3 factorial arrangement. The results showed that diet containing VA 3 000 IU/kg would result in the best growth rate,and the serum VA concentrations were relative stable. While dietary VA level was 45 000IU/kg, VA concentrations in liver and kidney were significantly increased,and the concentrations of VE in serum, kidney and liver were significantly decreased,and the growth rate had the tendency to be decreased. While dietary VA level was 15 000 IU/kg,VA concentrations in liver and kidney were significantly increased,and the concentrations of VE in serum and kidney were sig- nificantly decreased. While dietary VA level was 1 500 IU/kg, VA contents in serum, liver and kidney and growth rate of chicken broilers had the tendency to be decreased. There was no significant difference in growth performance in broilers while dietary VD level was between 500 and 5 000 IU/kg. The addition of 15 000 IU/kg VA would probably be excessive for broilers,and the addition of 45 000 IU/kg VA would be excessive for broilers, and the addition of 1 500 IU/kg VA would probably be deficient for broilers. High levels of VD resulted in abnormal changes of VA concentrations in serum and liver, which indicated the antagonism between high level of VD and high level of VA.